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456 Dana Question

budmidnight

Member
Joined
Jul 27, 2002
Messages
7
Location
ohio
Corvette
1963 conv 1965 coupe
I put a rear end in my 63 vette. Its a 456 ratio Dana, But the one I pulled out was a spicer with a 336 ratio. Was the Dana sapose to be a heave duty, The Dana has ID CF 3663 stamped on it Thanks Bud
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
All '63-'64 Corvette diffs used Dana posi units, which were prone to breakage, and had 17-spline pinion shafts; from '65 on, all Corvette diffs used Eaton Posi carriers and 30-spline heavy-duty pinion shafts. The one you installed (based on the stamped code) was built on March 6, 1963 as a 4.56.
 

budmidnight

Member
Joined
Jul 27, 2002
Messages
7
Location
ohio
Corvette
1963 conv 1965 coupe
Where did my Spicer come from

Thanks for the info john, the one I pulled out is a spicer, It has a CB 9762 . with 336 gears. I have a low serial number car. and the CB 9762 seems to match the build date of my 63. So where did the spicer come from. I just retired two years ago , so Im getting back in to my vettes. Thanks again John.
 

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