Crankshaft balance question: Gen V vs Gen IV

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OldNBold51

Petty Officer 2nd Class
Joined
Apr 19, 2010
Messages
169
I've a 7.4L powered 23' Wellcraft '95 model (Gen V). I've had to repower this year and due to circumstances (read $$) I installed a Gen IV block and crankshaft. I used the flywheel from the gen V on this gen IV.

My question is if there is a balance issue difference that I need to take into account concerning this flywheel.
 
zbnutcase

zbnutcase

Commander
Joined
Sep 19, 2009
Messages
2,055
Re: Crankshaft balance question: Gen V vs Gen IV

Yes. According to the factory Chevy Power manual, the Mark IV flywheel #3993827 is different from Gen V. They list 2 different Gen V flywheels depending on crank material; #14096987 is for forged steel cranks only, and #10101169 is for cast iron cranks only, due to weight differences between cranks. Hope this helps.
 
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