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