454 Timing Issues

454 Timing IssuesI have a '98 GMC 2500 Suburban - have extreme drivability issues no more than 20 mph up minor incliines. Stop the engine and connect the timing light to the No. A few years age I had a Chevy 454 in a MH that would backfire at highway speeds when going up a steep hill. based on what you've said, you would need 22 degrees initial timing to get 36 total. The timing light. it is very easy to try, just remove ip timing cover and mark the timing gear hub to gear position, determine the proper rotation of the ip and remove the three bolts out of the timing gear hub and put a wrench on the the big nut on ip drive shaft and rotate the ip drive shaft 1 revolution in direction of ip rotation, realign your previous marks …. If some of the plugs has rocky crustaceans on the plug, then it's oil consumption issue. Checking the timing on a 1977 Chevrolet 454 motor. I then increased the rpm to about 3000 and the full advance is close to 50. headers to 3" duals, HID 85K headlights, custom motorcycle twist throttle controls (paralyzed waist down),. They are equipped with q-jets and the points were traded in for electronic. Q: How to find TDC without timing marks? To . I have a rebuilt 454 (model 1992) and am having timing issues. "While idling with the timing light hooked up on number one plug wire the light. You want to check the initial and total timing (without the vacuum advance) and subtract the initial from the total so you know how much mechanical (also know as centrifugal) timing is built into the distributor. Discussion Starter · #1 · Jul 27, 2009. Stop the engine and connect SET TIMING connector. Although it is a great engine, it can show some problems over time. international 454 timing problem. ok, picture this, the timming cover has a grove in the bottom that the rubber seal rest in. Although car was running, I always had the feeling that ignition was too early (problems when . some california smog certified 350 timing were set. Wire reconnected time does NOT BUMP at all. Recently I was forced to replaced a blown 454 in my boat. It doesn't have near enough timing for that engine. Problem solved! Jump to Latest Follow 1 - 2 of 2 Posts. Since the spark timing in a modern car is computer controlled, this is a problem that'll need to be addressed by a trained technician. Discussion Starter · #1 · Jul 27, 2010. Need help with timing on a 1994 GMC 454. 454 Chevy Timing issue. Timing Adjustment, OBD1, ALDL, WinALDL, Win ALDL. Need some help on the correct ignition timing for my 1971 454. now when if it wont start is it a fuel prob hit with some carb …. a faulty ignition module can affect ignition timing, . took the number one spark plug out, used the starter to turn it till i found the compression stroke. At 3500 rpm, the timing on factory 396, 402, 427, and 454 engines is 32-34 degrees total advance, depending on the engine model. Plug the vacuum hose back on the can. I also checked for any "hot start" timing issues. the truck is a 1995 gmc c3500 w/7. How to time a 454 with no timing plate?. It doesn't have near enough timing for that engine. Im 100% posotive that the cam is int he correct position and that the wires are in the correct place. Suitable for street and off-road use, the 454 HO big block crate engine by Chevrolet is able to produce 425 horsepower at 5250 rpm. Due to limited funds I bought a complete, but used marine 454 off a local reputable marine dealer. Normal set timing is disconnect brown/blk wire set base timing to 4*. Does anyone know why ?? In the past G / M came out with a second design because they found a flaw or something they did not like in the original and the second design always fixes the problem and. Cant really check the timing. If number one is to the top, you can check by pushing a small screw driver into the spark plug. Does the problem get worse as it gets up to temp and runs. the timing is refusing to move off of the 20-28 degree area, regardless of moving the distributor a tooth either way. Problem solved! Jump to Latest Follow 1 - 2 of 2 Posts. Advance the timing on the distributor to correct this problem, and recheck vacuum. I recently rebuilt the top end of my personal pickup's 454 (L29) and had a mail order tune done but something is off. Awi Federgruen,; Aliza Heching · Awi Federgruen. Use a hand held tach and dial back, check timing every 500 rpm to see where the timing is (without vacuum) starting from an initial of 10. 454 timing and vacuum. The TBI 454 trucks are plauged by idle problems, I've owned and worked on many of them. Installing a Chevrolet 454 Distributor is simple. Depending on engine specs, cam timing, compression ratio, I'd like to see IDLE timing of 20 to 24 (initial and full manifold vacuum timing), and total (initial and mechanical) of 36 or so. Aluminum Timing Chain Cover 1991. The optimum ignition spark timing will vary with engine speed, load, and air/fuel mixtures. Compare the timing mark to the number one cylinder. One of the TBI injectors may be sticking or not working (wiring or computer problem), or fuel pressure could be low. My 454 is a vette 454 70-75' years. The engine will idle perfect at 750-800 rpm. intake is to buy you a carb 454 intake and rob the adapter of a 88 and up 454. Just wondering if anyone is familiar with a HEI 454 ignition system? I pulled my distributor without marking it like a dumbass, . Thread starter krvoorhies; Start date Sep 17, 2007; 1; 2; Next. 454 timing and vacuum. General Motors brought it out as an upgrade to the V8 engine. Search: 454 Timing Issues. Re: timming settings on a midly built 454. Timing chains will give you lots of warning before it fails. Regardless the dealer matched with similar carburated 454. Due to current supply issues normal delivery times are currently being delayed. Jeff Smith: You've addressed several issues, but they are all related to ignition timing. Answer (1 of 3): Which generation of 454 ? ( assuming you speak of ignition timing rather than cam timing ) A) The Mark IV engines typically Carbed units. The vehicle had a triangle style air filter and the foam was pretty much melted to. SOLVED: chevy timing 1997 454 out of time. Timing Curve Issues 454. clean the area good on pan and apply a little silicone casket there just before assembly. Timing Degree on 84 Big Block 454 Thanks to all. Joined: Apr 21, 2009 Posts: 46. I just tuned my 454 yesterday. Engine has replacement Brodix heads and a cam. Not sure if GM's changed things ,but the crank key pointed at the #1 crank throw. The problem started when i got the camaro from the gentleman who put the 454 motor in it. Then that will be 16-18 initial + 20 deg mech setup in dist (all in by 2800-3krpms) for a 36-38 max total which is a good place to start for dialing things in. 98 Chevy 454 Vortec Fuel Injectors Problems GMT 400 L29 (Part 2. The new motor is more extreme though: Mid level cam. I plug the wire back in at it ADVANCES the timing to 0* wtf? - change dist to a known running dist, repeat. Then that will be 16-18 initial + 20 deg mech setup in dist (all in by 2800-3krpms) for a 36-38 max total which is a good place to start for dialing things in. basic idle timing for a mild 454? so after rebuilding the carb and sticking it on there ( holley 750 vac. A third model of the 454, the LS7, was a crate engine and put out around 500 hor. Does anyone know why ?? In the past G / M came out with a second design because they found a flaw or something they did not like in the original and the second design always fixes the problem and. We will fulfill your order as quickly as we can and . I did this, then hook up the vacuum line. at this point you will be right on or 180 degrees out. Discussion Starter · #1 · Jul 27, 2010. My guess is it's getting too much gas, because if you try to throttle it up to wide open, it starts. Then you can turn the engine rotate the crank to the timing make (top dead center). 454 timing issues « on: October 20, 2020, 04:55:03 pm » Have a mild built 454 in my jet boat , that I’ve never been able to get to run right in the high rpm. That's where I could use some help(of course any other suggestions. Has a 454, was doing fine but just . I have a 1992 Pace with 454 and TBI. My chevy crew cab tbi 454 is giving me some problems and leaving me. what should my initial timing be with a 454, with vac disconnected and pluged im I have never had an issue with the timing at 22 BTDC. After the first few seconds, its idles rough. 7's you need an scanner that shows timing when the engine is. The spark plug wire may be found on the distributor cap, which has the number ‘1’ molded into the top of the cap. Timing Is Everything: Surgery Scheduling and OR Utilization. In this video I will be showing you the Injector issues that I have with my 98 Chevy C3500HD 7. Number one piston on tdc of compression stroke. In this video I will be showing you the Injector issues that I have with my 98 Chevy C3500HD 7. The crankshaft turns twice as fast as the camshaft and injection pump. timing is ok when first started up dont matter if timing wire is unpluged or not Posted by johnvanderboon Feb 19, 2011 Want Answer0. rev engine a few times to make sure the timing does not exceed. Ignition timing affects your engine's performance. Which generation of 454 ? ( assuming you speak of ignition timing rather than cam timing ) A) The Mark IV engines typically Carbed units. Its a 1978 454 truck engine 8. So to my big problem. ) im getting back fire and someone told me it might be 180 off, so i took the dist. Its nothing to crazy fancy, just a 454 motor. 1/Allison 2003 Chevrolet Blazer ZR2 2002 Saab 9-3 SE Convertible 2001 Saab 9-3 SE Convertible. Hey everyone, Im at ends meet with this motor i have in my 81 camaro. Point the key to the center of #1 hole. If it's way too rich it will usually also produce some black smoke. The problem I have is that the picture in the manual showing the lower tab shows it on the LH side at 7 o'clock (and the verbiage references the LH side of damper) It then goes on to say use plugs 5 or 8 when using that tab. Learn from UTI how it works, identifying issues & differences between advancing . Published Online:1 Jun 1999https://doi. $3454 Timing Chain Replacement?!. 454 Chevy Timing issue. Timing chain can be checked easily by removing the dist. We just replaced the head gaskets, (not because of an over heating issue, just for maintenance) Replaced all the lifters and all the. i got home and now i cant seem to get rid of this timing issue/stumble when i give it like 1/8 throttle. unplug vacuum advance. It sounds like you're not getting full advance in the distributor (normally about 20 degrees by 3000rpm). 454 Timing, Engine Temp and Performance. It was down in the 9-12 degree range at WOT on your datalogs. for this post is to let everybody know about the problem I was having with the new 454. 454 timing and vac questions. Topic: 454 Timing Chain Issues: Posted By: old myth, the 454 gears are steel, unless your encountering some sort of timing issue, put that worry to bed. completely the opposite so they need to be re-curved to fix this problem. The problem I have is that the picture in the. Timing Curve Issues 454. fine tuning with timing light is next. Timing is at 10 degree BTDC now. Then you need to figure out how much total timing your engine likes, there is no rule stating just how much total by cubic inches so this is where you need to do some testing. Set your total somewhere between 34 and 38 degs and go see if it pings at WOT, use a 1:1 or overdrive gear. Due to limited funds I bought a complete, but used marine 454 off a local reputable marine dealer. The timing will probably increase a bunch. lined it up manual to 0* tdc, droped the dist. Clear trouble code by removing ECM power fuse for 10 seconds. when the first went tbi on the 454 gm did not have aintake yet so they made a adapter and ran coolant thru it to make it look like it was not just a adapter (fancy) 94- 95 that had the intake you got. Mercruser 454 cid big block (340 hp) bogging problem. Meanwhile, if your timing belt is broken, it could result in some expensive problems for your car. The timing (phase angle) of the camshaft relative to the crankshaft can be adjusted to shift an engine's power band to a different RPM range 44 Mag but wanted. 454 timing issue. You can do it with a dial back timing light and trial and error method if you don't know anyone with a distributor machine. Answer (1 of 3): Which generation of 454 ? ( assuming you speak of ignition timing rather than cam timing ) A) The Mark IV engines typically Carbed units. I have never had an issue with the timing at 22 BTDC. Engine 454 chevy v8 TBI Posted by fhallinan on May 21, 2009 1 Answer Dan C Expert 93 Answers Ignition timing is set by the computer as long as the distributor pickup point is within reason. If the timing goes back beyond your initial setting, you have slop in the timing chain. Need some help on the correct ignition timing for my 1971 454. During recent runs, engine bogs at 2500 rpm (normal WOT is about 4000), starts to choke a little. Tuning and timing a 454 Chevy. For example, it is mostly associated with backfiring, seizing, knocking, gasket leakage, freezing, and stalling problems. I've tried adjusting timing, hasn't changed anything. basic idle timing for a mild 454? so after rebuilding the carb and sticking it on there ( holley 750 vac. During recent runs, engine bogs at 2500 rpm (normal WOT is about 4000),. It's not a fuel problem, it's a timing problem. Reset the idle to your desired spec. In the process of converting my Gen V 454 +. Use of a timing light to set the ignition timing to what the emission sticker wants which is also found in the service. Timing is at 10 degree BTDC now. The timing light should be connected to the battery posts by connecting the black wire to the negative battery posts and the red lead to the positive battery posts. I have a 1995 Mercruiser 454 with the Thunderbolt iv ignition system. The Chevrolet 454 Vortec engine debuted back in the 1970s. Checking the timing on a 1977 Chevrolet 454 motor. The timing tab for Motorhome 454's is down below at about the 5 . Checking the timing on a 1977 Chevrolet 454 motor. now more than ever, new problems arise that need to be adapted to. Its a 1978 454 truck engine 8. With socket and bar, turn the motor around until the 0 on the balancer ligns up with the pointer. Instructions for Timing the Chevy 454 Using the white marker, draw a timing mark on the harmonic balancer to make it more apparent to the timing light; Step 1. Problem solved! Jump to Latest Follow 1 - 2 of 2 Posts. The problem started when i got the camaro from the gentleman who put the 454 motor in it. I have rebuilt many chevy engines in my ten year career as a . Joe camaro 396ss said: Gen VI 454 HO Timing chain set issues ?? I see that GMPP has a second design timing chain set. The car starts/drives just OK, but here are the issues: a. Setting the timing on a small block Chevrolet or GM TBI engine. As of 2015, Chevrolet suggests a retail price of about $7,200. 4L compcams towing cam part#01-412-8 (37) timing at 1200 rpm is 25* sapose to be 0*-2* to be. Re: timming settings on a midly built 454. Ignition timing is used to ignite the fuel in an internal combustion engine at a particular time in an effort to burn as much of the fuel as possible in the . We imported the car form USA 3 years back. Chevy timing 1997 454 out of time. Its nothing to crazy fancy, just a 454 motor. Drop the distributor in with the rotor point in the general direction of no. It's not a fuel problem, it's a timing problem. 454 timing and vacuum. I have a rebuilt 454 (model 1992) and am having timing issues. Please Help Timing Issues With My 454 1995 C3500. Hey everyone, Im at ends meet with this motor i have in my 81 camaro. So says my database, I have to look up info, otherwise, I can't remember everything. The symptoms include a very rich running condition, a rough idle only in park or neutral, and the scanner shows a more rich condition on bank 2, and upon acceleration or any application of the gas pedal my bank 1 knock sensor is retarding timing by 6-7 degrees and 3-4 degrees when cruising. Base timing is probably 4 degrees. If it's too lean, it will just spew raw fuel and run bad and cough. Checking the timing on a 1977 Chevrolet 454 motor. Overheating, a broken timing belt, poor quality oil, or the absence of engine oil are the culprits behind the Chevy 454 engine getting seized up. Depending on engine specs, cam timing, compression ratio, I'd like to see IDLE timing of 20 to 24 (initial and full manifold vacuum timing), and total (initial and mechanical) of 36 or so. Motor is a late 70's 454 with HEI. Camaromeo Registered Joined Sep 23, 2020 4 Posts #16 · Mar 15, 2021. 1989 chevy 454 runs rough and timing jumps around as enging gets warmed up have replaced chain& gears distrib. 454 vortec timing gear question (updated) Magikal Aug 17, 2021 Magikal 1/2 ton status Premium Member Joined Nov 25, 2007 Posts 402 Reaction score 103 Location North Idaho Aug 17, 2021 #1 7. Here is a quote from something on the web that makes an interesting question: "Does your engine require additional timing advance at idle in order to idle properly? Radical cams will often require over 16 degrees of timing advance at idle in order to produce acceptable idle characteristics. With the vacuum advance working you should be able to set the timing at around 8 degrees (with the can unhooked) Then when you plug the vacuum in it will have around 28 or so so that the engine will run good. The table on the cowl says to set the ignition timing at 6 degrees BTDC with the vacuum line plugged at 600 rpms. The motor that came out was a carburated 1993 stock 454(think Mark IV). usually when the exhaust makes the eyes water it's from misfiring, raw gas is coming out the exhaust. 454 timing issues « on: October 20, 2020, 04:55:03 pm » Have a mild built 454 in my jet boat , that I’ve never been able to get to run right in the high rpm. Clear ECM trouble code by disconnecting ECM power source. hi guys just been and looked at a international 454 that wont start with out tons of heat or a drop of sniff, the tractor runs well once you . basic idle timing for a mild 454? so after rebuilding the carb and sticking it on there ( holley 750 vac. Buy RPC R8425 at JEGS: RPC Aluminum Timing Chain Cover 1991-95 Big Block Chevy 454-502. I have a 1995 Mercruiser 454 with the Thunderbolt iv ignition system. Discussion in 'The Hokey Ass Message Board' started by 5Belair7, Sep 27, 2012. Timing chains will give you lots of warning before it fails. TBI 454 Engines / Want to know about timing chain gears. Pull all the spark plugs, if all are wet and or black, it's a air / fuel problem. The casting numbers indicate 96+ 454 vortec 7400 L-29 Generation VI #10237297. take the timming cover off, don't mess with the pan. i think it runs real and put out black smoke. Checking the timing on a 1977 Chevrolet 454 motor. I bought a 93 suburban, 454 auto, 4x4 2500. (If you have a ported vacuum connection, it might not until you have opened the throttle a little) 9. When the spark occurs too late it won't completely burn compression gasses which creates more heat that the cooling system has to dissipate. For specification, refer to SPECIFICATIONS/TIMING MARKS. How to easily set your own timing. 4 l-454, 4 degrees at idle. Turms out the RV shop that tuned it up set the timing at 6 degrees after TDC when it should have been 8 degrees before TDC (14 degrees difference). When we pulled this engine from the torched motorhome, It had TBI on it. Jump to Latest Follow 1 - 4 of 4 Posts. when the first went tbi on the 454 gm did not have aintake yet so they made a. Cold start = I have to hold my foot on the pedal ~1500-2000 RPM for about a minute . The dealer has tried to set the timing, but it went form soso, to worse. Re: Cam Timing Chain – ’99 Vortec 454. In this video I will be showing you the Injector issues that I have with my 98 Chevy C3500HD 7. For example, it is mostly associated with backfiring, seizing, knocking, gasket leakage, freezing, and stalling problems. I got it to run turning the dizzy . 1,091 Posts. I am just curious how many members have had their 87-95 454 TBI My 1995 454 engine I believe has a timing chain issue but just want to . timing on the chevy motors do not very much. 1 (left front) spark plug wire, at the plug or at the distributor cap. Confirm that the base timing is correct with engine at full operating temp and the timing connector disconnected. not enough information so start by;remove and plug vacuum advance,hold engine rpm at 3000 and set to 35º. Instructions for Timing the Chevy 454 Using the white marker, draw a timing mark on the harmonic balancer to make it more apparent to the timing light Step 1. in order to put the cover back on. Setting the timing on a 454. This aluminum cover with timing indicator fits all 1996 and newer Gen VI engines. at this point you will be right on. basic idle timing for a mild 454? so after rebuilding the carb and sticking it on there ( holley 750 vac. Spark timing is not adjustable. When its cold (as in first thing in the morning), it fires right up and high-idles for a few seconds and runs fine. Connect timing light and adjust as necessary by loosening hold down bolt and rotating distributor. It fires up and seems to run well, no issues when revving it, etc, no other known runability issues. Rebuilding a 454 is easy, provided that you know your way around an engine. Engage the electrical connections and the spark plug wires. a faulty ignition control module can cause a number of problems. I HAVE HAD THE MANIFOLD GASKETS REPLACED TWICE ALREADY AND THEY ARE IN DIRE NEED OF REPLACEMENT. This truck has the 454 engine and it has been giving. I am only getting 3200RPM's (before it was 3700) and I am having some problems starting and keeping it running. Ford has had problems for decades with the timing guides on the 4. I set the initial timing to 12° with vacuum advance disconnected and plugged 48 overall, depending on the engine setup, NOY a problem, . I HAVE 2 PROBLEMS - 1994 CHEV 454 CARBORATED ENGINE - THIS MOTOR IS ON A MOTORHOME WITH 41,000 MILES 1. Understanding Vacuum Advance and Why You Need It. Joined Sep 9, 2009 · 13 Posts. I removed the old edelbrock 7810 timing set thinking I'd. I have my initial set at 22 with 14 mechanical starting at 800-900 and all in by 2800. Turms out the RV shop that tuned it up set the timing at 6 degrees after TDC when it should have been 8 degrees before TDC (14 degrees difference). Connect one-on-one with {0} who will answer your question. Topic: 454 Timing Chain Issues: Posted By: old myth, the 454 gears are steel, unless your encountering some sort of timing issue, put that worry to bed. 2005 Chevrolet Crew Cab Dooley, 8. Before looking at each of these, let's take . Joined Apr 26, 2009. I didn't care for my Crane solid 134781 cam so I switched to a Lunati 60205. The ign module is located on the back of the upper intake plenum and can be impacted by exposure to heat over time. Vacuum leak; Dirty fuel injectors; Carburetor problems; EGR valve; Ignition coil; Spark plug wires. Joined Aug 13, 2007 Messages 12 Points 0. I then can advance the timing until the engine will accept the throttle without much hesitation. The instructions say to use 12 guage wire. I am only getting 3200RPM's (before it was. How To Set Timing Without A Timing Light?. intake is to buy you a carb 454 intake and rob the adapter of a 88 and up 454. Cant really check the timing. loosing sleep over my 1998 454 -compcams timing issue. Dont forget to have motor idle set to 600-650 and vac adv unhooked/plugged while setting initial to ensure the mech adv in dist isnt startingt to activate upsetting the initial timing adj. I give it gas and it bogs down and backfires throught the carb. To save yourself some money, choose an engine with a solid core. Topic: 454 Timing Chain Issues. The ignition control module is getting hot and cutting out or the harness under the plenum is shorting out. My question: Is 13* BTDC ok for the base timing? If yours runs good with no issues at that timing then run it. At 3500 rpm, the timing on factory 396, 402, 427, and 454 engines is 32-34 degrees total advance, depending on the engine model. The engine struggles to keep it above 7-800 RPM. I'm thinking this might be the problem. Hard starting, multiple backfires while decending, a surging effect while at constant cruising speed. now when if it wont start is it a fuel prob hit. How to time a 454 with no timing plate?. 030 into a 489 and ran into a problem. You may turn the engine by hand if you pull all spark plugs. That can be caused by too rich of a mixture, or also by too lean of a mixture. 454 BBC leak between timing cover and oil pan. Overheating, a broken timing belt, poor quality oil, or the absence of engine oil are the culprits behind the Chevy 454 engine getting seized up. Somewhere around 34-36 total probably will work the best. Trying to figure out if it's a timing issue or carb. 1969 Chevelle 454 G GRN69CHV Registered Joined Nov 6, 2003 12,955 Posts #4 · Jan 7, 2005 You can not set it for total timing using the stock timing marks. Jump to Latest Follow Truck seat covers are up to 76% off right now on eBay. 67 454 Edelbrock air cleaner, performer carb, intake, heads & shocks. Check and adjust ignition timing with engine at normal operating temperature and transmission in "P" or "N" (auto. 4, that i just finished rebuilding. Gen V 454 timing gear alignment issues. The association between timing of elective surgery scheduling and operating theater . Click here for Black! Tan! Multi-coloured! even Camo!. It seems to be breaking up when running. That would put #1 piston at TDC and you would aim the cam dot down as you installed the chain. Tighten hold down and recheck the timing. 4 motors are identical in setup as the 5. 10 Most Common Boat Engine Problems. Im currently looking to check and adjust the timing. Truck recently had an exhaust manifold replaced. 454 timing issue. 454 timing issues « on: October 20, 2020, 04:55:03 pm » Have a mild built 454 in my jet boat , that I’ve never been able to get to run right in the high rpm. And when the engine gets seized up, it will eventually stop cranking, and that can make you get stuck in the middle of the road. Stop and look for the timing marks to be in view. You might need to go a ways to get the dist. Give the engine a few minutes to build a bit of temperature, then you will need to set timing by bringing RPM up while watching the timing mark. Recently I was forced to replaced a blown 454 in my boat. What are you running for over all timing in higher rpms under WOT. Installing a Chevrolet 454 Distributor is simple. At no load cruise, high vacuum level, 36 total and 12 vacuum, 48 overall, depending on the engine setup, NOY a problem, but it should be stable. It is used on current 454 HO and 502 HO engines. Then you need to figure out how much total timing your engine likes, there is no rule stating just how much total by cubic inches so. Re: timming settings on a midly built 454. 95 suburban 454 timing chain issue. If number one is to the top, you can check by pushing a small screw driver into the spark plug hole, then you should be it the top. most of the older 350's timing are set about 8 deg before top dead center. First, I will set the timing at the recommended 8 degrees advanced. Current Fleet (of 2) 2012 RAV4 2. Continue raising RPM until the mark stops moving to find "total" advance. You can do it with a dial back timing light and trial and error method if you don't know anyone with a distributor machine. This truck has the 454 engine and it has been giving. Normal set timing is disconnect brown/blk wire set base timing to 4*. While the majority of big-blocks displaced 454 inches, Chevy did build a and reconfigured the front timing chain cover bolt patterns. Start the engine and allow it to reach operating temperature. on each end there is a 90 degree angle on that lip. But the good news is that there is. total newb Only show this user. First, on a street-driven engine there is no good . I also have the chevrolet chassis manual that came with it. Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. Molly's 70 Premium Member Joined Jan 4, 2010 1,363 Posts #10 · Apr 5, 2010 I had the same issue with my 454. I am only getting 3200RPM's (before it was 3700) and I am having some problems starting and keeping it running. What's the timing degree for a carbureted 454 engine?. Then you can turn the engine rotate the crank to the timing make (top dead center). I set mine to 36 degrees total with the boat in the water under mild load (cruising with rpm above 3000). I have rebuilt many chevy engines in my ten year career as a mechanic, but I cannot figure out what is going on with this one. Overheating, a broken timing belt, poor quality oil, or the absence of engine oil are the culprits behind the Chevy 454 engine getting seized up. Is there anything I can do quickly to restore a. I have a 1992 Pace with 454 and TBI. The thing is, it is mostly due to the lubricating oil. Change the springs and do it again. What is the timing on a 454 big block Chevy? Big-block Unless there has been a significant alteration to the vehicle, Chevy timing is very consistent. GM repair problems? Ask a GM repair expert now. What is the timing on a 454 big block Chevy? Big-block Unless there has been a significant alteration to the vehicle, Chevy timing is very consistent. Started popping and backfiring, barely keep it running. I spun a rod bearing and ruined the old crank and ended up with a balanced Scat kit. Recently I was forced to replaced a blown 454 in my boat. I have my initial set at 22 with 14 mechanical starting at 800-900 and all in by. If the spark happens too soon, the engine fights against cylinder pressure which may cause a pinging problem. 7's you need an scanner that shows timing when the engine is running see where its at if your close then you just wanna go under hood after the motors off and barely move the distributor clockwise for more or counter for less when. There should be a sticker under the hood or on the air cleaner which gives the timing spec and idle speed spec. My truck had neither so I put a connection on the wire behind the glove box. Give the engine a few minutes to build a bit of temperature, then you will need to set timing by bringing RPM up while watching the timing mark. A few years age I had a Chevy 454 in a MH that would backfire at highway speeds when going up a steep hill. I just tuned my 454 yesterday. 1992 454 TBI Timing. The dealer has tried to set the timing, but it went form soso, to worse. The table on the cowl says to set the ignition timing at 6. 1992 454 TBI Timing. I have a comp cam extreme energy cam shaft in my vortec 454 and it seems to like more timing crusing then little to none, and am getting 28 degrees at WOT as soon as I punch it but im also running a 93 octane tune. How To Time A 454 Chevy Engine?. is this likely the module itself or the pickup in the distributor itself?. Jump to Latest Follow 1 - 20 of 39 Posts. I've got a vortec 454 out of a 99 suburban we swapped into a 1982 6. Joined Jan 31, 2008 · 281 Posts. 454 timing issues « on: October 20, 2020, 04:55:03 pm » Have a mild built 454 in my jet boat , that I've never been able to get to run right in the high rpm. Checking the timing on a 1977 Chevrolet 454 motor. Suggested 71 454 TIming (1/10)2/10/15 12:39am. Removing the distributor cap from the distributor is necessary. You may turn the engine by hand if you pull all spark plugs. IMPORTANT: Failure to follow these timing procedure instructions will result in improper timing causing performance problems and possible severe damage to . The questions and answers you need to troubleshoot your motor issues. I have a rebuilt 454 (model 1992) and am having timing issues. The crankshaft timing gear is half the size of the camshaft gear and the injection pump gear. Joe camaro 396ss said: Gen VI 454 HO Timing chain set issues ?? I see that GMPP has a second design timing chain set. 454 vortec timing gear question (updated). I just tuned my 454 yesterday. , and noting the degree of 'play' or 'slop'. 95 454 timing issues. mikess68. The two production models of Chevrolet’s 454 V8 engine, the LS5 and LS6, produced 360 and 450 horsepower, respectively. Use a hand held tach and dial back, check timing. When stabbing dist, rotor should point at number 8 stamped into lower dist housing. Was thinking timing chain is stretching and ready to go. How to Tell if You Have a Bad Ignition Control Module. The harmonic balancer has 4 marks. Engine is 1986 model mercruiser MIE 340 big block with quadrajet carb. 454 timing issue. Jump to Latest Follow 1 - 20 of 20 Posts. It was down in the 9-12 degree range at . I have never had an issue with the timing at 22 BTDC. 1989 chevy 454 runs rough and timing jumps around as enging. Timing Degree on 84 Big Block 454 Thanks to all. Suggested 71 454 TIming (1/10)2/10/15 12:39am. The 454 is the most common member of Chevrolet's big block engine family. The timing marker may be found on the timing cover located below the water pump. What is the timing on a 454 big block Chevy? Big-block Unless there has been a significant alteration to the vehicle, Chevy timing is very consistent. basic idle timing for a mild 454?. Although it is a great engine, it can show some problems over time. Rev the motor and timing only comes up to about 8*, that doesnt seem right. The problem started when i got the camaro from the gentleman who put the 454 motor in it. A lot of people ask me if they need a timing light to replace the . GM recommends 26 degrees max on their crate engines, but I typically start with 28 degrees on the L29 applications and see how they perform. Timing is floating. When its in gear at idle (like a stop light), it struggles to stay above 500 RPM, and will occasionally stall. Timing Connector Location/High Idle Prob.