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62BillT
01-07-2007, 01:42 PM
Trying to find out the gear ratios on '58 to '64 regular 3-Speed transmissions, original for a 6 cylinder car.

Any info would be appreciated.
five-seven
01-07-2007, 05:54 PM
If memory serves me right the stick rears were 3.36s and the automatic rears were 3.55s. The auots were lower because of the high 1st gear in the powerglide. Steve
62BillT
01-07-2007, 05:59 PM
Appreciate the reply, but I'm trying to find out the ratios on the transmission gears, especially what 1st gear is.

I did a little research and believe the old short tail, non synchro 3-Speeds are Muncie SM 318's.
skipxt4
01-07-2007, 06:59 PM
62BillT; I found an old Hot Rod mag. It lists a Saginaw 3-spd. at 2.85 1st gear, and a Borg Warner with a 2.94 1st gear ratio. The article claims the Borg Warner was used in some Chevy 6 cyl. Doesn't say what models they were.:doh Skip:)
oldskydog
01-07-2007, 09:59 PM
Trying to find out the gear ratios on '58 to '64 regular 3-Speed transmissions, original for a 6 cylinder car.

Any info would be appreciated.

According to CBN the low perf Saginaw 3spd in 6 cyl would be 2.94 in first and 1.68 in second. Hope this helps.
oil4kids
01-07-2007, 10:47 PM
for saginaw transmission

count the line notches on the input shaft


-0 Line 2.85/1.68/1.00


-1 Line 2.54/1.50/1.00

-2 Line 3.11/1.84/1.00

-3 Line 3.50/1.89/1.00
409z28
01-08-2007, 12:26 PM
There was also a 3speed close ratio 2.20 first cant remember 2nd.:)
62BillT
01-12-2007, 11:57 AM
Appreciate all the replies.

Y'all helped to get the info I was looking for. Thanks again.
oldskydog
01-12-2007, 09:47 PM
Who won?:rofl
62BillT
01-14-2007, 11:10 AM
Who won?:rofl

2.94 1st seems to be the correct one for my application, but all the answers were helpful.
skipxt4
01-15-2007, 11:52 AM
Cecil: What was your prize?:brow :rofl :rofl Did you win a set of 690 heads?:brow :clap :bow Yea, I know...:stooges
oldskydog
01-15-2007, 07:39 PM
Cecil: What was your prize?:brow :rofl :rofl Did you win a set of 690 heads?:brow :clap :bow Yea, I know...:stooges


Nah, I think I won the choice of a poke in the eye with a sharp stick or a free audit by those nice folks at the IRS. At least that would be consistent with my success at the lottery.:rofl