C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT4 owners

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Old Jan 14, 2009 | 07:47 PM
  #1  
catlettlt1's Avatar
catlettlt1
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From: NEWPORT NEWS VA
Default LT4 owners

I know that some where out there someone has a stock flywheel out of their car, I'm in need of one to try and match balance one with an LT1 auto flywheel for my LT4 conversion. I have a vibration at 900 rpm and again at about 3500-4000 and I know its coming from my stock flywheel. Specs to the 2 as far as weight at various points would be even better. I was thinking if you mark numbers starting with the roll pin location at each and spin them to see what the weight differences were at numbered points through out the flywheel that you could also come up with a good starting point that way.Please this all I need to be finished.
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Old Jan 15, 2009 | 02:20 PM
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96GS#007
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Originally Posted by catlettlt1
I know that some where out there someone has a stock flywheel out of their car, I'm in need of one to try and match balance one with an LT1 auto flywheel for my LT4 conversion. I have a vibration at 900 rpm and again at about 3500-4000 and I know its coming from my stock flywheel. Specs to the 2 as far as weight at various points would be even better. I was thinking if you mark numbers starting with the roll pin location at each and spin them to see what the weight differences were at numbered points through out the flywheel that you could also come up with a good starting point that way.Please this all I need to be finished.
The dual mass has offset weight from the factory and it's cast in place. Any other weights that were added are specific to the engine that flywheel is/was installed on. In other words, there is no cure-all, you can't just copy what someone else has. You need to go thru the balancing steps.
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