steering rack years spec. 86 vert
Race Director
Joined: Apr 2002
Posts: 10,036
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From: Anaheim CA
From what I've seen there are a lot of different codes for the various years and the two ratios. The codes are on the bottom of the gear box on a metal cap. It's on the right at the top of this picture:
Team Owner
Joined: Sep 2003
Posts: 25,393
Likes: 2,741
A late rack with just inner tie rods attached I measured at 50", "vetteoz" measured his '89 at 50 5/8" and another poster mentioned his '84 measured 48". You could use these as a guide and along with the 2 letter code from the end cap confirm likely the rack identification. With a rack on the ground it's very easy to confirm the "lock to lock" turn counts. 2 turn is generally felt to be the desired and is frequently referred to as a Z51.
'84 - '87 length less outer tie rods 48" approx (I have never measured first hand)
'88 + length less outer tie rods 50" or greater
