Chevy 168tooth plates have dual bolt patterns to accommodate both powerglide and turbohydramatic th torque converters. The same things that cause the flexplate to crack can also cause transmission problems. Demonstration of broken flexplate causing no start condition. A cracked flex plate is usually a sign of other problems. A cracked flex plate is almost always a sign of other problems. It can also cause a starter to act funny when starting the car.
Anyways, the other day i went to start it up after driving it the night before and there was a clanking noise that would come and go while idling in park. Hey guys, its been awhile since ive been on here since my lt1 swap this summer. The problem turned out to be a cracked flex plate which. The classic and most obvious symptom of a cracked flexplate involves the sound it makes while the engine is running. I really hope thats what it is, and that the noise will go away when replaced. Advance adapters 712500a advance adapters ls series flexplate adapter kits compare flexplate and hub extension, 168tooth, ls chevy engine to gm transmission, each. A damaged flex plate can create serious expensive damage. With the engine running it looks like the flex plate has a slight wobble to it. Chevrolet performance 19260102 chevrolet performance flexplates compare flexplate, 168tooth, steel, internal engine balance, chevy, small block ls, each. If you have this plate, all you need is pn 57518346. Most of these flex plates are sfiapproved except where noted and nhraihraaccepted rear wheel drive for use with 6 or 8bolt crank flanges flex plates with 716 convertor bolts are intended for highperformance aftermarket 9 and 10 converters.
I was driving along the m4 on my way to an important appointment, doing about 60mph in drive, 2500rpm on the possibly inaccurate tachometer, tc locked it locks at 45mp. Subscribe to the chevy performance enthusiast monthly newsletter. Visit for a behindthescenes look at the world of chevrolet performance from an enthusiasts point of view. Every bolt heat treated to hardness over hrc38 for rough and tough operation. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. Weve got tough yet affordable flexplates for stock and mildly modified street vehicles. Chevrolet small block ls1 hiperf cracked rod rod bolt kit. The bolt head fits any 12 points 58 socket wrench for precision and maximum torque for installation. More severe misalignment can break a flexplate in 15,000 to 30,000 miles. The flexplates are double migtig welded for additional strength and lasting precision pass after pass. Tci automotive 399753 ls1 engine to gm auto transmission adapter. Now it just hangs on my shop wall as a reminder of where not to spend my money. Is it possible to install a flywheel backwards by accident.
Atp automotive z194 automatic transmission flywheel flexplate. Is the new ring gear wider than the factory ring gear on the flex plate. I have a ticking noise on the underside of my 89 camaro that looks and sounds like its coming from the torque converter area. Atp z269 automatic transmission flywheel flexplate. Flex plates with 516 converter bolts are recommended for use with econolockup torque converters. The ticking increases and decreases with the engine speed. Ls heavy duty steel flex plate ict billet prw ls flexplate wbolts ls1 th400 th350 700r4 swap flywheel sfi 10. We know it is 2mm larger in diameter, my question is regarding the width of the ring gear from front to back of the vehicle is there any fore aft play in the starter shaft that could be allowing the bushing to move towards the starter motor and thus hitting the ring gear. The reason for the sound involves the flexplates location and its function.
Search our online flex plate catalog and find the lowest priced discount auto parts on the web. Bad starter drive can cause teeth or ring gear to wear rapidly. The ticking noise was coming from the torque converter area. Advance adapters 712500a4 advance adapters ls series flexplate adapter kits. Broken flex plates can not be repaired, they must be replaced. Excessive crankshaft flange runout or end plate can also cause flexplate cracking. The cracked hub is a little harder, usually experience with cracked flex plates makes it easier to diagnose that. Heavy duty flex plate to suit chev gen 3 and ls1 and ls2 engines. The tci 399753 flexplate fits 1998 and newer fbodies with ls1 engine as well as 99 and newer gm trucks with 4. You can drop the flywheel cover and inspect for missing weights on either convertor or flex plate. Flexplate used for ls engines fits stock ls4l60 family torque converter california proposition 65.
Descriptions of the sound include clanking, chirping and a light knocking. For use on older transmissions th350, th400, 700r4 etc when mating to a new ls style engine. Make sure this fits by entering your model number gm performance parts 19260102 flexplate ls engine to 4l60 trans dimensions in inches lxwxh. Flexplate and hub extension, 168tooth, ls chevy engine to gm transmission, each part. Spacer can be removed so the flexplate can used with the early 6. You must have had the same rep as i did he was a a h he had no intent on helping. Mrc magnum holden gen 3 flex pate flexplate ls1 vt vx vy vz. The constant expansion and contraction of a flex plate over time can result cracks andor shearing of the flex plate. This is what you can see when i took the trans out this is what the other side looks like.
Pressure control solenoid bracket to valve body bolt. Hello all, is the lq4 flex plate and a ls1 flex plate the same. Mrc magnum holden gen 3 flex pate flexplate ls1 vt vx vy. After removing the flex plate and looking at it i still could hardly make out the crack but that ended up being the problem. The flexplate mounts the torque converterwhich is a device that can multiply torque when there is a difference between rotational speedsto the crankshaft. I had my precision stall converter re stalled and they made the motor side snout a little longer so it would bolt up the a ls motor. 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. Those factors ensure that when the engine starts and the driver puts it in. Buy ict billet ls heavy duty flywheel flexplate crank holding tool flex plate holder ls1 lsx ls3 lm7 lr4 lq4 ls6 l59 lq9 lm4 l33 ls2 lh6 l92 l76 ly2 ly5 ly6 551911. Dec 28, 2004 right off the bat, they said it didnt sound like piston slap. Even with the torque converter unbolted and slide back it was very hard to see the crack. This is a discussion on flexplate carnage within the automatic transmission forums, part of the drivetrain category. It fits fine but the snout is all the way in and the flex plate is about 14 to 516s away from the plate i have and. A cracked flex plate will often make a popping noise or a tinny sound when running.
Chevrolet small block ls1 hiperf cracked rod 2pc rod bolt kit. 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. Plug assembly, automatic transmission oil pan ck 22. The crack was in between the crankshaft mounting bolt holes. A cracked flexplate is almost always a sign of other problems. Installs into the ls crankshaft to provide support for torque converter hub. Manufactured in the usa on stateoftheart cnc equipment, atis flexplates are created from sfispec steel and are sfi 29. We offer high quality new, oem, aftermarket and remanufactured chevrolet s10 flex plate parts. Will work on both flex plates and manual flywheel applications. For serious performance, tci machined sfiapproved flexplates are a must have.
When it comes to your gmc k1500, you want parts and products from only trusted brands. Buy atp automotive z194 automatic transmission flywheel flexplate. The tci superquality flexplates are thicker than stock plates to withstand the stresses of todays high rpm engines and highstall torque converters. Difference between flywheel and flexplate it still runs. If you replace the flex plate and dont fix the real problem your flex plate will most likely crack again. I know that theres the possibility of an exhaust leak tick or a valve tick, but im pretty positive that this is my problem area. Chevrolet flexplates powerglide transmission type free. The flex plate could also have cracked at the crankshaft hub.
The job of a flex plate is to allow for expansion of the torque converter as engine rpm increases. So, following on from my breakdown the car, then nearly me. Any of these three items could cause your vibration. If not properly diagnosed it will occur again and often damage to the transmission may follow. Check out chevrolet performance product releases, future car. The offset is the same, its just done a different way. Direct replacement to standard flex plate sfi rated, heavy duty plate. The cracked hub is a little harder, usually experience with cracked flex. Each ati flexplate is manufactured and toleranced from oem drawings to ensure a precise fit and location. My reactor flexplate lasted six starts and striped 3 teeth.
Sfi approved and heavy duty flexplates hughes performance. If your motor came with a bent or broken flex plate or you just want something new, speedway motors carries. Mrc magnum holden ls1 ls2 heavy duty sfi rated flexplate 168t. Right off the bat, they said it didnt sound like piston slap. Chevrolet small block ls1 cracked rod rod bolt kit. Ati flexplates are created from custom drawn sfispec chromoloy steel and are sfi certified. Engineered to prevent runout, ring gear bounce and other damaging problems, these flexplates offer unmatched strength and protection.
When retrofitting the 2012 chevy camaro zl1 for racing with an automatic transmission, the tci gm lsa flexplate is a must. The ultimate in strength and functionality couple your engines flexplate to the crankshaft with this high quality. Here at advance auto parts, we work with only top reliable flywheelflexplate product and part brands so you can shop with complete confidence. This may occur in worn engines or engine that have been poorly rebuilt. Flexplate ls1 engine to 4l80e convertertransmission wide.
Car ran great after we got everything back together. And we also have heavyduty and sfiapproved flexplates for highhorsepower, highrpm race applications. There are tough flexplatesand there are chuck norriscaliber flexplates. Ati sfi flexplates for racing automatic transmissions. Any damage to the vehicle or injury resulting from. I was driving along the m4 on my way to an important appointment, doing about 60mph in drive, 2500rpm on the possibly inaccurate tachometer, tc locked it locks at 45mph with the 1. Ls1 flexplate question hello all, is the lq4 flex plate and a ls1 flex plate the same. Usa made ls engine transmission 4l60e bell housing bolts set kit t56 ls1 4l80e. Recently noticed at idle either in park or in neutral i hear ticking sound from the bottom of the car.
Each ati flexplate is manufactured and toleranced from oem drawings to ensure a precise fit and location and is quality inspected to exceed. All content provided on this site is to be used as a suggestion only. God awful noise and flywheel wobble chevy message forum. This flexplate will allow your ls1 series engine bolt up to a 4l80e or th400 with the standard 11. I know i would know for certain if i look under the car and inspect it myself but dont have the time currently to do so. Slight misalignment may only cause a single flexplate to break in the life of the vehicle. What can cause a cracked flexplate out of balance engine or torque converter. Identification a flywheel can vary greatly depending on whether it is light, so that it can spin quickly, or.
Track day in the e55 and bonus race on the way home. Ati flexplates and adapter kits for street and race use. Plug assembly, automatic transmission oil pan y 20. You can tell because the center of the plate will protrude towards the motor. Chevrolet gen iiiiv ls series small block w 700r4 turbo 350400 adapter plate flexplate bolt kit. Mopar performance torque converter flexplates jegs. Nov 03, 2011 so, following on from my breakdown the car, then nearly me. Mrc magnum holden ls1 ls2 heavy duty sfi rated flexplate.