What Flexplate Do I Need? - Third Generation F-Body Message Boards

Shake Zula · 01-07-2006, 09:25 AM

No one Ive asked so far realy knows what flexplates I can use.

I have an 87-later 1 piece rear main seal. Im puting in a TH350, and will be using a TCI convterter thats says "dual bolt pattern only" ( but for all I know thats just in hope that people buy their flexplates along with it)

I have a flexplate from a 700r4 that my engine originaly had. Also have the starter for it.

Will that work? Or do I specificaly need a "168 tooth, dual bolt pattern" And some say "counter-balanced" should that be of concern to me?

Ricktpi · 01-07-2006, 12:39 PM

Assuming you have a 350 or 383 with internal balance, 153 tooth, neutral or internal balance, one piece rear main seal
Summit part# for B&M BMM-20238 & has 10.75" bolt pattern
168 tooth is BMM-20239 & has 10.75" & 11.5" patterns.
Dual bolt pattern refrers to Powerglide & Hydra converters.

Shake Zula · 01-07-2006, 01:29 PM

ok... not exactly an answer to my questons....

I need to know if a 153 tooth flexplate from a 700r4 will work with an 86 Th350 with a TCI converter. If the converter bolt holes line up with the ones on the flexplate it should obviously work,right?

Ricktpi · 01-07-2006, 03:02 PM

It should fit.