Thread: 915 Tranny
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  #12  
Old September 30th 2003, 17:21
Shad Laws Shad Laws is offline
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Join Date: Nov 2002
Location: Stanford, CA
Posts: 125
Hello-

According to my books...

1972-73, 2.4L
Magnesium case
R&P 7:31
1st 11:35
2nd 18:33
3rd 23:29
4th 26:25
5th 29:22

1974, 2.4L
Magnesium case
R&P 7:31
1st 11:35
2nd 18:33
3rd 23:29
4th 27:25
5th 29:21

1976, 2.0L (912E)
Magnesium case, 901-style splines and clutch arm
R&P 7:31
1st 11:35
2nd 18:33
3rd 23:29
4th 26:25
5th 29:21

1975-77, 2.7L
Magnesium case
R&P 8:31
1st 11:35
2nd 18:33
3rd 23:29
4th 26:26
5th 28:23

All 1978-86 trannies are aluminum and have a 8:31 R&P. I also have the 4-speed ratios, but I don't think you care about them. I have incomplete data on the subtypes (i.e. -12)... not enough worth posting.

How much torque do you think the engine will make, anyway? I'll be willing to bet that you'll have a tough time killing a 915, even a weak one :-). What cruising rpm do you want?

Take care,
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Shad Laws
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