the 65 396 i'm restoring needs your help. its got its original 4.56 differential in it but the original muncie is long gone. got all the parts needed to make up a muncie but don't know how to identify the steel drive gear nor the steel driven gear. parts book not too helpful. any help appreciated. want the speedo to be accurate. mike
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Re: muncie drive and driven speedo gears
Mike, I'm looking in a 1/81 dated parts catalog and find a driven gear #3860329 listed for 65-66 w/4.56 ratio. It is also listed for 67 w/4.56 and the description of 20 teeth - steel. For the drive gear, #3845079 is listed for 57-62 w/4.56, 63 w/4.56 p/trac axle, and for 67 w/4.56. It is described as 1 59/64 O.D X 29/64 thick. However, it is described as 6 teeth for 57-62 and 67, but 8 teeth for 63. Kind of confusing, but maybe a lead. I'm sure Joe L. can confirm, but I suspect both are long discontinued. Chip. -
Re: muncie drive and driven speedo gears
Hi Mike. I was recently putting a 64 tranny together and we used a steel shaft gear with six angled grooves or gears. It was the small shaft(1 1/4 ) I believe. The ratio was 4:11 so I think it had 19 teeth? . It was plastic though not steel. Hope this helps Curt.Comment
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Re: muncie drive and driven speedo gears
Agree with Chip's part numbers and description. Here's the 6-tooth mainshaft gear with an NOS 20-tooth steel driven gear.
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