5 3 cracked flex plate 454

In a 1976 chevy with a big block 454 can you use a 4 speed. After checking the flexplate id pull the valve covers to see if theres damage up top. At first i thought it was comin from the top but when i get under it its alot louder sounds like its comin from the. More severe misalignment can break a flexplate in 15,000 to 30,000 miles. How to know if a flexplate is warped it still runs. This product can expose you to chemicals including styrene, which is known to the. Then whom ever replaced the fp before me didnt catch the peened bellhousing and tightened it down causing a alignment problem. Sfirated external 168 teeth balance chromoly steel flexplate for chevy 454 197090. Lsltlsx series engine block flywheels and flexplates. The key to choosing the correct bolt pattern and tooth count is measuring the torque converter you are using. I am the original owner of a 1992 c 1500 silverado 5. A flexplate or flex plate is a metal disk that connects the output from an engine to the input of a torque converter in a car equipped with an automatic transmission. Mar 03, 2015 published on mar 3, 2015 in this video i talk about a noise coming between the engine and transmission. Evening folks, my 300tdi auto today developed a nasty intermittant knocking, that seems to be coming from the bellhousing area.

I really hope thats what it is, and that the noise will go away when replaced. If they are missing, or there is only one there, that will get the converter out of alignment with the. Noise in my chevrolet silverado sounds like flywheel. There are a crapload of different flexplates for the 454 since it came with th350th4004l80etc. You really should check the end play on the crank using a dial indicator should measure 0. You really should check the end play on the crank using. What causes a flywheel to crack numerous times justanswer.

Mark iv bigblock flywheels and flexplates are pretty easy to recognize. A vital part of an automobile engine equipped with automatic transmission, a flexplate consists of a piece of thick sheet metal that bolts to the crankshaft and torque converter. Buy scat crankshafts fp454sfi flexplate for big block chevrolet. All 168 tooth flexplates have dual gm bolt patterns and are sized for stock 38 mounting bolts and can be easily. At first i thought it was comin from the top but when i get under it its alot louder sounds like its comin from the oil pan.

Cracked fly wheel usually gets louder as it gets hotter, or under heavier load. Similar in function to a flywheel in manual transmission engines and called a flexplate due to its expansion, or flexing, during the. I have heard that a 366 and 454 flywheel have the same weights on the flywheel and are inter changeable but. Symptoms of a cracked flexplate general discussion modern. The converter is bolted to the flex plate and the other side of the converter slides inover the transmission shaft. This flexplate will allow your ls1 series engine bolt up to a 4l80e or th400 with the standard 11.

Need to get to funeral some distance away day after tomorrow, so repair not possible. Nov 16, 2006 it has a few thousand miles since the trans rebuild. If they are missing, or there is only one there, that will get the converter out of alignment with the flex plate and the resulting excessive flex causing the cracking. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. A dropped bolt will definitely make noise but the noise typically doesnt last long since something breaks. A 153 tooth flexplate will be paired with a torque converter that has a 10 3 4inch bolt circle. Right off the bat, they said it didnt sound like piston slap.

Weve got tough yet affordable flexplates for stock and mildly modified street vehicles. Your other option is, if youre going with an aftermarket torque converter anyways, is to have the torque converter made with the correct offsets and mounting pads to bolt up to the stock 4. The rotating assembly with flexplateconverter may be thrusting forward. Well heres my question, this truck runs like a champ, ive always maintained everything in my garage that was in my boundarys of knowledge, oil changes,chassis lubed, brakes, the small stuff. Rated 5 out of 5 by skidaddy from tci flexplate i bought this as a replacement upgrade for a o. Fiy damper plate replacement first of all, the signs that a damper plate is going bad will be a knocking noise coming from the bell housing of the transmission. Locate the inspection cover on the underside of the bell housing case. Mar 27, 2007 can i drive a vehicle with a cracked flywheel. Im thinking broken flex plate in my 73 blazer however when im in gear low rpms and rolling down the street i hear the. Broken or loose bolts on the crankshaft end of the flexplate, or on the torque converter. Dec 26, 2009 is it possible to install a flywheel backwards by accident. Yesterday the flex plate on my 2000 toyota 4runner w 155k miles was replaced. There are atleast 3 bolt holes on the flex plate these attach the flex plate to the converter.

The problem turned out to be a cracked flex plate which. Dec 11, 2017 i show you a nice trick to help you when changing your flex plate of converter. The converter is bolted to the flex plate and the other. Flywheels and flexplates mark iv bigblock flywheels and flexplates are pretty easy to recognize. In this video i talk about a noise coming between the engine and transmission. Excessive crankshaft flange runout or end plate can also cause flexplate cracking. This time around, i know they make an sfi approved flexplate that will handle anything, and im putting the sucker in. Can you replace chevy flexplate without removing tranny answers. After they checked it out, they said it was a cracked flex plate between the tranny and engine, and that this is a known issue with gm.

Spacer can be removed so the flexplate can used with the early. Order at flexplate for your vehicle and pick it up in storemake your purchase, find a store near you, and get directions. After they checked it out, they said it was a cracked flex plate between the tranny and engine, and that this is a known issue with. Could it break apart, and if so what would happen if driving on highway. The same things that cause the flexplate to crack can also cause transmission problems. A 168 tooth flexplate uses a 11 12inch bolt circle. This may occur in worn engines or engine that have been poorly rebuilt. Patc sells billet flexplates, performance flexplates, dodge ford. Drive damper flex plate for velvet drive borg warner 1004650007 as7k2c round drive damper assembly with purple springs for velvet drive 71, 72,1004, 1005, 10, 1014 series marine. This product can expose you to chemicals including styrene, which is known to the state of california to cause cancer.

Sep 16, 2008 i am the original owner of a 1992 c 1500 silverado 5. All 396, 402, and 427ci engines are internally balanced and all 454ci and larger. A cracked flex plate is almost always a sign of other problems. Ati chrysler adapter flexplates require the use of 10 3 4 bolt circle only with gm converters. Starts fine but increasingly loud noise emanates from transmission area as i travel. We have some of the lowest prices on chevrolet performance parts, chevrolet performance. Gm performance view topic broke my fourth flexplate. Buy scat crankshafts fp 454 sfi flexplate for big block chevrolet. Last time i hunted the exhaust, lifters, bearings, only to find out i had to do the damn flex.

Scat crankshafts fp454sfi flexplate for big block chevrolet. Slight misalignment may only cause a single flexplate to break in the life of the vehicle. Yeah i got to do this to my 383 in my elco next week. However, our duramax diesel has an irritating click sound at idle ive read on truck sites that it can be bubbles in the oil system. Dec 28, 2004 right off the bat, they said it didnt sound like piston slap. The flexplate can crack or warp due to an out of balance engine or torque converter.

Buy allstar performance all26800 168t sfi internal balance flexplate. There are tough flexplatesand there are chuck norriscaliber flexplates. Drive damper flex plate for velvet drive borg warner 1004650007 as7k2c round drive damper assembly with purple springs for velvet drive 71, 72,1004, 1005, 10, 1014 series marine transmissions. I went from an externally balanced 454 to a internally balanced stroker 489 which. Last time i hunted the exhaust, lifters, bearings, only to find out i had to do the damn flex plate and it only had 2030k on it maximum. Is it possible to install a flywheel backwards by accident. Tci 399973 gen v flexplate made by tci automotive, for as low as. The symptom was a ticking sound under certain conditions. It has a few thousand miles since the trans rebuild. There should be 2 dowels, one on each side, to align the bellhousing of the transmission with the engine block. I have had a quick look through the starter motor hole and. Commonly used on almost all small block 305 350 and big block marine.

Once the plate is removed, you will see the flex plate with gear teeth around it, and the round donutlooking torque converter. Sloppy mechanics wiki 4l80e information, technical sheets. Cracked flexplate question for a bodies only mopar forum. Spacer can be removed so the flexplate can used with the early 6. Chevrolet silverado 1500 questions loud knocking noise 5. And we also have heavyduty and sfiapproved flexplates for highhorsepower, highrpm race applications. Atp z166 automatic transmission flywheel flexplate product image. Chevy 168tooth plates have dual bolt patterns to accommodate both powerglide and turbohydramatic th torque converters. Proposed the issue was the flex plate rather then the engine. Both gas engines and both have a disturbing knock or clunk sound at idle. All 396, 402, and 427ci engines are internally balanced and all 454ci and larger engines are externally balanced. The rotating assembly with flexplate converter may be thrusting forward.

There are tough flexplates and there are chuck norriscaliber flexplates. I have a loud knocking noise coming from the engine. Im pretty damn sure i broke my fourth flexplate on the truck. All 168tooth flywheels have gm dual bolt patterns, are sized for stock 38 mounting bolts and can. I think the shifts are setup too hard on the computer causing the flex plates to break actually. Mine was cracked all the way around the center mounting holes shop the new one. Published on mar 3, 2015 in this video i talk about a noise coming between the engine and transmission. Speedmaster 1226010 168 tooth billet flexplate, chevy 350454. The first cracked fp for me i ignorantly assumed the missing torque converter bolt was the problem so i missed the bellhousing problem. Visit our whats new page to get all the latest chevrolet performance news, announcements, and specials. The 3 prior flex plates have all been cracked starting at the bolt holes. Gm power enthusiasts like us were relieved to find that the gm gen iii engine released in 1997 had essentially the same block bolt pattern at the rear. Tci automotive 399473 sfiapproved flexplate for big block. The engine is held in place with the frontside motor mounts.

I would take that cover off and turn the flywheel by hand to see if you can see a loose bolt. Drive the vehicle at normal speed, letting the transmission shift. Prw 1845400 sfirated external 168 teeth balance chromoly steel flexplate for chevy 454 197090, early. Constructed from a high tensile strength material these flexplates resist elongation and cracking. Allstar performance all26800 168t sfi internal balance flexplate. Ati sfi flexplates for racing automatic transmissions. How to find the right flywheel and flexplate for your engine. Flywheel used for ls engines with 6bolt crankshaft.