Z/28 rear-end gearing

[Flowjoe]

Is there any evidence that a Z/28 was built using a gear ratio higher (numerically lower) than 3.73:1? 

This is not to prove that any particular car is genuine or anything like that.  It is a topic that came up in another forum discussion about what was possible  and if possible whether it ever happened.

Just to get it out of the way, I understand completely that a 302 (as built by GM) would not be a "happy camper" with, say, 3.07:1's.

[william]

There are documented [window sticker, shipper copy] examples of 307, 331, 355.

[77thor]

The way I understand it, is that the high-winding 302 is happiest with gear ratios even lower than 3.73 (say 4.10).

[Flowjoe]

There are documented [window sticker, shipper copy] examples of 307, 331, 355.

Thank you William - that answers the question nicely.

[Flowjoe]

The way I understand it, is that the high-winding 302 is happiest with gear ratios even lower than 3.73 (say 4.10).

My '69 X-77 car had a 3.07:1 open in it for years (came to me that way in '84 - I never thought to question it for a long time - but not the original rear as it turned out)...it was a drag to drive under certain conditions (any stops on any slope )