Bellhousing to Flywheel dimension - help!
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Bellhousing to Flywheel dimension - help! Replacing ZZ502 with LS3, backed by TKO-600.
I'm using a GM flywheel that is 0.400 thicker than stock to compensate for the LS motor's inset flywheel mount (it's 0.400 further away from the trans than the BBC).
I've measured the "Bellhousing Face to Flywheel Face" dimension on the ZZ502 that came out, and the LS3 with this new flywheel.
For the ZZ502, I get 1.50"
For the LS3, I get 1.52"
What I don't know is how close is close enough? Should I be able to stick my clutch and pressure plate on there and the 0.02" will never matter?
Second, from what I can find, the BBC flywheel flange is 0.740" back of the bellhousing, whereas the LS is 0.340. I also read that a typical flywheel is 0.950" thick. Combined that would make the dimension I'm supposed to measuring as (0.740 + 0.950) == 1.690. That's a ways from my 1.50 however.
Thanks
Dave
I'm using a GM flywheel that is 0.400 thicker than stock to compensate for the LS motor's inset flywheel mount (it's 0.400 further away from the trans than the BBC).
I've measured the "Bellhousing Face to Flywheel Face" dimension on the ZZ502 that came out, and the LS3 with this new flywheel.
For the ZZ502, I get 1.50"
For the LS3, I get 1.52"
What I don't know is how close is close enough? Should I be able to stick my clutch and pressure plate on there and the 0.02" will never matter?
Second, from what I can find, the BBC flywheel flange is 0.740" back of the bellhousing, whereas the LS is 0.340. I also read that a typical flywheel is 0.950" thick. Combined that would make the dimension I'm supposed to measuring as (0.740 + 0.950) == 1.690. That's a ways from my 1.50 however.
Thanks
Dave
Things to consider:
Does the starter engage the ring gear on the new flywheel.
If it's 0.02" farther out, probably no issues, but check disk to crank bolt clearance. Disk to bearing retainer clearance. Pressure plate to bellhousing clearance. And yu have enough clearance for a standard throwout bearing.
With a new combo, you simply have to measure it all yourself.
Does the starter engage the ring gear on the new flywheel.
If it's 0.02" farther out, probably no issues, but check disk to crank bolt clearance. Disk to bearing retainer clearance. Pressure plate to bellhousing clearance. And yu have enough clearance for a standard throwout bearing.
With a new combo, you simply have to measure it all yourself.
