View Full Version : Just some interseting information about ratios in various transmissions


performabuilt
01-15-2007, 09:30 PM
TRANSMISSION 1ST 2ND 3RD 4TH 5TH 6TH

Borg-Warner T-5 (GM Applications) 2.95 1.94 1.34 1.00 0.63
Borg-Warner T-5 (GM Close Ratio) 2.75 1.94 1.34 1.00 0.74
Borg-Warner T-10 2nd Design 2.64 1.61 1.23 1.00 n/a
Borg-Warner T-10 2nd Design 2.88 1.74 1.33 1.00 n/a
Borg-Warner T-10 2nd Design 3.44 2.28 1.46 1.00 n/a
GM Muncie (M-21, M-22) 2.20 1.64 1.28 1.00 n/a
GM Muncie (M-20) 2.52 1.88 1.46 1.00 n/a
M28: 3.36 2.07 1.35 1.00 0.80 0.62
GM Powerglide 1.76 1.00 n/a n/a n/a
GM Turbo Hydra-Matic 350 2.52 1.52 1.00 n/a n/a
GM Turbo Hydra-Matic 400 2.48 1.48 1.00 n/a n/a
GM Turbo Hydra-Matic 200-R4 2.74 1.57 1.00 0.67 n/a
GM Turbo Hydra-Matic 700-R4 3.06 1.62 1.00 0.70 n/a
GM Turbo Hydra-Matic 4L60E 3.06 1.62 1.00 0.70 n/a
GM Turbo Hydra-Matic 4L80E 2.48 1.48 1.00 0.75 n/a
T56 Close Ratio (LS1, LT1, Viper) 2.66 1.78 1.30 1.00 0.74 0.50
T56 Wide Ratio (Mustang) 2.97 2.07 1.43 1.00 0.80 0.62
FORD AOD and AODE 2.40 1.47 1.00 0.67 n/a n/a
FORD 4R70W 2.84 1.55 1.00 O.70 n/a n/a
SUPER T-10C 2.43 1.61 1.23 1.00 n/a
super T-10W 2.64 1.75 1.33 1.00 n/a

juicedls1
01-15-2007, 09:34 PM
So the first gear is lower in the th350 than the 4L60E?

LT-x7
01-15-2007, 09:43 PM
So the first gear is lower in the th350 than the 4L60E?

No,
TH350=2.52
4L60e=3.06

No T56?

performabuilt
01-15-2007, 10:19 PM
that was all i found listed ,
and of note a higher number means a lower gear ,

gator's 99TA
01-16-2007, 07:28 AM
this is why the 4L60e launches so well. that huge first gear. its also why you dont need big gears in your auto!

joecar
01-16-2007, 09:51 AM
Add this one to your list up there...

GM Turbo Hydra-Matic 4L80E 2.48 1.48 1.00 0.75 n/a

joecar
01-16-2007, 09:55 AM
And these also...

T56 Close Ratio (LS1, LT1, Viper) 2.66 1.78 1.30 1.00 0.74 0.50
T56 Wide Ratio (Mustang) 2.97 2.07 1.43 1.00 0.80 0.62

performabuilt
01-16-2007, 10:00 AM
added to original list

PBA
01-16-2007, 08:19 PM
There were Super T-10's in the early to late 1970's with gear ratios of
2.43 1.61 1.23 1.00 Close ratio
2.64 1.75 1.33 1.00 Wide ratio
both were excellent for street & drag racing.

performabuilt
01-16-2007, 08:37 PM
added