Hey everyone, I just have a quick question about flywheel.

I need a flywheel for a 1987 1 piece rear main seal externally balanced (87 383sbc) that will work with a 94 lt1 T56.

Won't a flywheel from a lt1 fit a 87 1 piece because they are pretty much the same? Just as long as I get a 153 tooth external balanced t56 flywheel?

 

Please let me know so my dad will quit yelling at me about it lol.

 

You should be able to use an LT1 flywheel no problem. As long as your 383 is balanced to work with a stock 1 piece RMS flywheel the LT1 flywheel will work just fine.

 

I believe my 383 needs a external balance flywheel but it is a 1 piece. But aren't LT1 flywheels all somewhat external balanced, but the crank is neutral?

 

The LT1s are external balance with the counterweight on the backside of the flywheel. Anything with a 1 piece RMS is externally balanced since the crank is missing a counter weight due to the way it is made for the 1 piece RMS.