Clutch diameter
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
all performance motors received the 11" clutch, ..either will fit.
make sure you have the correct clutch spline also. (the center hole)
you should get an alignment tool also to make installation easier.
make sure you have the correct clutch spline also. (the center hole)
you should get an alignment tool also to make installation easier.
Advanced
Joined: May 2017
Posts: 63
Likes: 9
From: Memphis TN
I've been looking at this recently for my '69. The 350 had the 10.4" clutch with the 153 tooth flywheel. The big block had the 11" clutch with the 168 tooth flywheel. You need the flywheel teeth to match your starter. Don't forget to have your flywheel resurfaced or get a new flywheel (they're pretty cheap now - a LUK flywheel on Amazon is $60).
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
L88s use a lightweight 15 lb. flywheel with a 10.4 diameter diaphragm clutch and pressure plate. PN 3991406.
