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View Full Version : gear ratio blackZ28 10-15-2003, 03:52:00 PM Ok i have an open diff I jacked one side up and spun the wheel 2 full turns the pinion spun 3 ..does this mean I have a 3.08 ratio??? thanks ------------------ 79 Z28 4speed 72 RS Z28 4speed Gary S 10-15-2003, 04:08:00 PM That sounds right if the opposite wheel was solidly on the ground and didn't move. If you got slightly over 3 turns, it is probably a 3.08, and if you get under 3 turns, it could be a 2.73. blackZ28 10-15-2003, 06:18:00 PM I think it was right at or over 3 (1 1/2 per wheel turn)one side was on the ground this is in a 70 1/2 ton chevy i would hope they wouldnt put a 2:73 in it. Thanks for the info Im having a 700R4 rebuilt and the guy wanted gear and tire size for the speedo gear....thanks again. ------------------ 79 Z28 4speed 72 RS Z28 4speed |