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Discussion in 'Original Drivetrain Topic' started by 70lt1z28, Nov 14, 2017.
Twozs, thanks for your help. I certainly listen to anyone's posts when they are trying to help. I think the 1973 AIM is completely relevant to the conversation.
For "visual correctness" does anyone know for sure if the adapter is a yes or no?
I may just use the following chart for the final say:
Using that chart with 3.73, 25.9 (from here: https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=45) and doing the math results in 2.909 X 0.8241 = 2.397. Which is very close to stock 8 tooth drive/19 tooth driven natural color 2.375 ratio. This makes some more sense now.
Wanted to add for others the part numbers are 3987919 for the 19 tooth natural colored driven gear.
My 70 Z28 with 3.73 uses the factory 19 tooth bullet gear with the SW .8241 reducer, plus my tail shaft uses the plastic gear and not the steel.
Mine used the metal gear with no box on the outside. 3:73 gears. M21.
Yours is a pretty early 70, isn't it?
02C production, Norwood.