be careful NOT ALL 5.7 CHEVYS ARE neutral balance if it is a 1 pc real seal crank it is external on the back and int. on the front.buy the correct flywheel ,bbc will not fit ...

If I understand all the posts correct a #14091599 1pc external balance flywheel will work on my Gen V 502. correct?

No,
That flywheel is for a Small Block, not a Big Block.

The Gen V and VI 502 flywheel has a casting # ending in 805. I have several if you need one.
Eddie

can someone verify this? my 1-piece flywheels don't seem to have any counterweight on-in them.

dk,
I bet if you look at it closely you will see a weight molded into the flywheel.

However, there is the possibility that if it is a custom built engine that it is completely internal balance with no weight on the flywheel.

Trying to figure out if i can use the standard or manual flywheel or the automatic flywheel seems to be to thin compared to the old one i took out which is a 12inch version an it was a 82 350 an im replacing motor with a 97 350

any help please

no

yes