Internally or externally balanced flexplate?
Internally or externally balanced flexplate? 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
Staging Lane
Joined: Dec 2007
Posts: 69
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From: United Kingdom
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
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
TECH Regular
iTrader: (1)
Joined: Aug 2007
Posts: 480
Likes: 0
From: Lake Jackson TX, south of Houston
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
http://www.compperformancegroupstore...ct_Code=399173
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flex plate 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.
