Counted Out

iTrader: (6)

So I've heard that the LT1 hydraulics make up the difference when a flywheel is cut/resurfaced making it impossible to cut it too much, but I've also heard that it is very possible to have it cut too much causing engagement/disengagement issues.

So, which is it?

whytryz28

iTrader: (28)

I always thought the LT1 flywheel was just another externally balanced sbc flywheel.

1redta

a friend of mine cleaned up my flywheel on a lathe, we cut the flywheel surface and the mounting bosses the same amount, removed the alignment pins no problems what so ever

Counted Out

iTrader: (6)

It has more to do with the hydraulics than the flywheel.

tbag_skywalker

The only possible problems that would occur if an LT1 flywheel has been resurfaced too many times is heat build up and warping. If you keep taking away material from the flywheel, it will basically become more thin and 'flimsy' and will warp easier under enough heat. Not sure exactly what the limit is to how much material can be cut off but I can say I've had my flywheel resurfaced on a Blanchard Grinder 5 times and have had no problems.

As for an engagement/disengagement problem, this will never happen with a flywheel that's been resurfaced once, twice, or a dozen times. Each time a flywheel has been resurfaced, it gets a tiny bit thinner. On an LT1 setup, a thinner flywheel will actually position the 'cupped' end of the clutchfork even closer to the slave cylinder, making it even less likely to have engagement/disengagement problems.

Counted Out

iTrader: (6)

That's exactly the information I was looking for, thank you.

gjohnsonws6

iTrader: (12)

Surfaced 4 times,never had a problem

tbag_skywalker

No problem at all sir. Once you tear into an LT1 clutch setup, you'll realize they're practically idiot-proof compared to LS1 setups.