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i need to know if a 66 327/300hp could have been ordered with a 3:70 posi rear end before i rebuild the 3:70 rear end that i have in the car,any help would be appreciated, thanks
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Re: 66 rear end possibilities
Joe, yes. What are the codes (two letters followed by a date) on the rear you have?
The code for a 3.70 posi rear is AO.
Harry -
Re: 66 rear end possibilities
Joe-----
A 1966 Corvette with 300 hp could not have been ordered with a 3.70: rear gear ratio. 3.36:1 was the numerically highest ratio that could be ordered with the 300 hp engine. Of course, this is for orders placed through normal channels. Placed through a COPO process, I suppose that it would have been, theoretically, possible. I really doubt that any such thing would ever have been done unless there were a lot of other "non-standard" items also desired. Plus, to convince anyone of it you'd need documenation.In Appreciation of John HinckleyComment
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Re: 66 rear end possibilities
Joe, am I looking at the wrong data, I often do. I am looking at page 41 of the NCRS Pocket Spec Guide.
HarryComment
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Re: 66 rear end possibilities
Harry-----
I believe that the page that you're referring to just lists the available axle ratios by codes. Not all ratios were available with all engine/transmission combinations, though. The 300 hp (base) engine for 1966 was only available with 3.08:1 and 3.36:1 rear axle ratios. Positraction could be ordered for either of those ratios, though.In Appreciation of John HinckleyComment
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Re: 66 rear end possibilities
Got it, Thanks, This old Fa_t forgot to look at page 28.
HarryComment
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