Bad93TA

iTrader: (2)

Im missing a tooth on my flexplate and want to get a TCI but they make an internally PN#399174 balanced and externally PN#399173 balanced ones. Is it just preference or what?? My motor is stock. thanks

Bad93TA

iTrader: (2)

anyone???

chevythunderz28

Hope this helps..
I am in the process of re-searching a 383 rebuild for my car.
From what I understand, when a motor is rebuilt and the rotating assembly is internally balanced by the builder, and if you were to use your original flexplate, you would need to remove the weight on it or get an internally balanced flexplate.
As stock engines are externally balanced, you will need the externally balanced flexplate.
I could be wrong, but there are tons of more experienced guys here who will correct me if I'm wrong..
Just trying to help out.

Rob

socal

iTrader: (1)

sbc are internally balanced except the 400, until 87 or so, 1 piece rear like the l98, and lt1 are external but the bolt pattern for the crank is different, So a 1 pics flywheel wont fit a 2 piece so you need a externally balanced for a 1 piece rear. i think but ask when you order it.

http://www.compperformancegroupstore...ct_Code=399173

Bad93TA

iTrader: (2)

thanks for the replys, so i need an externally balanced. both of you guys dont seem to sure though. anyone else??? just dont want to get the wrong one.

ulakovic22

iTrader: (12)

They are correct, you need a 1-piece rear main seal externally balanced flexplate for a stock motor.

Bad93TA

iTrader: (2)

ok thanks

The Engineer

If you engine is a "factory" LT1, you'll need the flex-plate with the counter-weight.

However, most LTX rebuilds will be internally balanced and use the flex-plate without the weight.

WD

J_Z28_T

iTrader: (2)

External is right for stock motor normally what u take off a stocker is what should go back on when ur dealing with something like that, when u order it thay will know when u tell them what u have bro and i know for a fact u have a one piece rear main seal.