C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Steering rack codes

Old May 15, 2006 | 10:19 AM
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Default Steering rack codes

I have done a search both here and other places on the net and cannot find a list of the C4 steering rack codes. My code, SP, does not show up in my GM parts book, my auto parts store's books, nor at the rack rebuilder that I use.

Anybody have a lead to either a code list or the specific code SP rack?
It is on my much modified 89 originally Z51 car. What was the last year the fast ratio rack was offered as part of Z51? I'm sure this is fast ratio.
TIA
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