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stevedubois1@aol.com (Read 140 times)
May 27th, 2017 at 7:53am

skibob927   Offline
I Love my Corvette!
Oceanside Ca

Gender: male
Posts: 2
74 Vette w/TH400, want to change the differential gear ratio from 3:55 to 3:08 for frewway crusing.  will and C3 differential fit? how about C4's?

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Reply #1 - May 28th, 2017 at 9:29am

Artsvettes   Offline
Global Moderator
New Jersey

Gender: male
Posts: 3177
C4 will take a lot of work plus they are weaker than the c3 cast iron units. Have you thought of upgrading to an overdrive transmission? You can keep your 355 an criuse like you want to. I did a 200r4 in my 77 it was a pleasure to drive.........jack

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