Drag Racing Tech - LS1 TH400 flexplates...

What are you guys running, which ones are working for ya, which ones have you seen fail a bunch? A buddy of mine said that a couple brands (one atleast) was having a problem tearing the whole center when hit with the Transbrake.

Please post from experience/and or what is out there. I only know of the Hughes one, speed incs flexplate, and then TCI.

I've been running a stock '98 flexplate for a couple years now without any issues. Just gotta use the spacer.

stock flexplate.

TCI here, it is very stout. You have to run a converter with the small bolt pattern, 10.75" on the th400. It also has the 4l60E pattern.

Ati. :)

i just got mine from speed inc.

Ati. :)

x2 :angel:

Ran a TCI no issues before, now run a Meziere one.

Dan

TCI here.

Running a TH350 with the TCI flexplate here

TCI sfi approved flexplate here. 1 year and so far so good.

I"m still trying to understand how that guy tore the center out of a hughes.

I have had a hughes on my car for 3 years now and it's been fine, leaving off the transbrake for 2 years with no problems. over 100 10 second passes and probably 70 9 second passes 1/2 of which were 9.6 to 9.5 and I haven't had any problems at all.

JL... I haven't seen it myself or heard any real convincing evidence, just hear say. I guess I'm just doing some investigating before i make the purchase... I just like my feet is all! :D

Is the Hughes one SFI btw?

If the run-out is excessive I can totally see the center of any flexplate getting ripped out.

stock plate with spacer 10" tc
looking to use the new JW spacer that couples ls with a SBC flexplate

hughes on the way for me. we will see if it holds up. got a good deal on it, kinda worried now but such as life.

Whats the spacer used for on the stock one? I bought a TH400 conversion for my car and have the stock plate but dont know of a spacer?

Yes the hughes is SFI approved...... so that being said I dunno how it could have gotten approved if it was such a POS

^JL... thanks for the info... Like I said it was all hearsay as far as I know. I'm glad someone who has used it chimed in! BTW I think your sig pic proves its alright to me ;)

Whats the spacer used for on the stock one? I bought a TH400 conversion for my car and have the stock plate but dont know of a spacer?

spacer used on lq4 engine with 4l80e

^JL... thanks for the info... Like I said it was all hearsay as far as I know. I'm glad someone who has used it chimed in! BTW I think your sig pic proves its alright to me ;)

http://www.jegs.com/i/J+W+Performance/564/80014/10002/-1

this what im thinking of using next with a neutral/internal balanced
SBC flexplate
no weights

anybody used the cheap SFI plate you can get on ebay??

I consider the tci a pretty good deal so I wouldn't want to risk shrapnel everywhere for anything cheaper.

anybody used the cheap SFI plate you can get on ebay??

It's your car, but a flexplate isn't something I'd cut corners on.

It's your car, but a flexplate isn't something I'd cut corners on.

i wasnt really planing on getting it, just wondered

who has broken a stock flexplate?

The only stock ones I've seen broke had too much run-out or the starter gear was damaged.

I can show you a shiney new billet wheel with the center ripped out of it.

I saw Speed Inc has one as well... I know someone said what brand it was... BTW all of these aftermarket flexplates need to have the GM adaptor used with them to work with the th400?

I saw Speed Inc has one as well... I know someone said what brand it was... BTW all of these aftermarket flexplates need to have the GM adaptor used with them to work with the th400?

I didn't use any adapter with my TCI flexplate. I had a TH400 converter built for an LS1. If you use a standard SBC/BBC th400 converter, you need to use the TCI or Hughes spacer.