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Premium Member
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92 Posts
Discussion Starter #1
These are the # on the 4 speed trans I have,Can someone tell me what trans this is ?
case#3885010
this # was hard to see but it looked like 6k115304
 

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5,142 Posts
3885010 is the casting number for a 1965-1967 Muncie, 2 input rings would be a M-20, 1 input ring would be a M-21.

M-20 Ratio= 1st-2.52, 2nd-1.88, 3rd-1.46, 4th-1.00 and rev.-3.11
M-21 Ratio= 1st-2.20, 2nd-1.64, 3rd-1.28, 4th-1.00 and rev.-2.27

6k115304- 6=1966, K is for the assemble plant whick may be Kansas, 115304 is the build sequence of the car and may also be part of the car's vin number.
 

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Premium Member
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Discussion Starter #6
So where would i find the correct # on the trans other then the 2 I listed ? I am going to sell this trans and I dont want to tell someone it's a 67 and it's not.
 
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