Early vs late C4 steering racks

69427

The Artist formerly known as Turbo84
Joined
Mar 30, 2008
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Clinging to my guns and religion in KCMO.
Are all C4 racks interchangeable (disregarding the ratio)? I've got a spare later rack sitting on the shelf, and I'm trying to decide whether to sell it or keep it as a spare for the '84.

Thanks.
 
No, later racks are different, 90 up is differet 91+ also has a fluid cooler
 
It will bolt up if you change the tie rods too but why would you want to? The 84 Z51 rack is 13:1 ratio, a little under 2 turns LTL, the 90+ stuff is 15:1 and as such requires more turns. I didn't read your original post too well though, apart from ratio it will bolt up so yes it's interchangeable as far as I know.
 
When my friend ordered a rack for his 90 vette there were two available is what he told me. If this is true whats the ratio on the other rack & will it bolt up?
 
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