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Chilly178 · 05-02-2018, 08:07 AM

Yep I measured it it’s 11 and 7/8. Went to autozone and had them pull out a new 12” for the truck just to compare and that one too measured under 12”. So i’m guessing all 12” clutches measure a little short. So are you saying a 12” (11 7/8”) clutch will work with the GM one for sure that lists the clutch diameter 11.85” max?

05-02-2018, 08:07 AM	#4
Chilly178 Registered User Join Date: May 2016 Location: Green Bay, WI Posts: 135	Re: SM465 to 5.7 vortec flywheel/clutch Yep I measured it it’s 11 and 7/8. Went to autozone and had them pull out a new 12” for the truck just to compare and that one too measured under 12”. So i’m guessing all 12” clutches measure a little short. So are you saying a 12” (11 7/8”) clutch will work with the GM one for sure that lists the clutch diameter 11.85” max?