ls1 t56 behind bbc??

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Jan 13, 2008 | 07:43 PM

gsrrob

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From: Biloxi, MS

ls1 t56 behind bbc??

before I get the try the search reply, I have searched yet to find what I wanted to know.

I have a built ls1 t56 I took out of my trans am and I am puttin it in a 70 Nova behind a 427. I would have got an lt1 t56 but I already own the built ls1 t56

I want to use factory 4 speed linkage and clutch fork. I have the 4 speed bellhousing and I bought the Mcloed adapter.

questions after searching I didn't find clear answers

I know I have to use my ls1 t56 clutch disc.

What flywheel do I use?
bbc flywheel
ls1 flywheel
conversion flywheel? (came up in a search I found but wasn't too clear)

And with whatever flywheel I need to use. Can I use my ls1 t56 pressure plate.

Last edited by gsrrob; Jan 13, 2008 at 07:45 PM. Reason: pic

Jan 13, 2008 | 08:41 PM

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by gsrrob

You need to use a BBC flywheel. The 427s were internally balanced and had 168 tooth flywheels. Many companies make all kinds of flywheels. Centerforce, McLeod, the list goes on. You also don't need to use any part of the LS1 clutch. When ordering your clutch, tell them you have a 26 spline input shaft. The T56 uses the same input as old school, fine spline T10, and Muncie transmissions. I've had good luck with Centerforce dual friction clutches in my GTO which has a 502 bbc.

Andrew

P.S. You can get iron flywheels from the GM dealership still. The aftermarket flywheels will be billet steel or aluminum, which is better, but more expensive.

Jan 14, 2008 | 07:38 AM

garys 68

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From: Camdenton, MO

I was looking at something similar.
Look at aftermarket SBC/BBC vs LS1 clutch parts numbers. They're the same.
Just use your BBC flywheel, BBC clutch plate, and make sure you get it with a 26 spline disk. Some older trannys were 10 spline.
BTW, is a pilot bushing adapter needed with that engine/trans combination?