TRANSMISSION GEARING
 These
tables are based on a 26" rear
tire diameter.

There
is no such thing as an
ideal transmission/differential ratio combination. But  some
pairing will work better
than others for your conditions. Smaller engines require a
shorter first gear (under 8 mph/1000rpm) while more cubic inches might
allow 10 mph/1000rpm to be comfortable. If you like
comfortable cruising, most people like to have a top gear that keeps
the engine rpm below about 2300 rpm at a typical highway speed, but
some have a higher tolerance for noise than others. 
4Speed
Top
Loader, wide ratio 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
Ratios: 
2.78:1 
1.93:1 
1.36:1 
1:1 
Dif. 
Speed@
1000RPM 
3.07 
9.1 
13.1 
18.5 
25.2 
3.31
 8.4 
12.1 
17.2 
23.4 
3.54 
7.9 
11.3 
16.1 
21.8 

4Speed Top
Loader, close ratio 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
Ratios: 
2.32:1 
1.69:1 
1.29:1 
1:1 
Dif. 
Speed@
1000RPM 
3.07 
10.9 
14.9 
19.5 
25.2 
3.31
 10.1 
13.8 
18.1 
23.4 
3.54 
9.4 
12.9 
16.9 
21.8 

T5
5speed
Some
T5's are geared like the Tremec
3550 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
5^{th} 
Ratios: 
2.95:1 
1.94:1 
1.34:1 
1:1 
.63:1 
Dif. 
Speed@
1000RPM 
3.31:1 
7.9 
12.0 
17.4 
23.4 
37.1 
3.54:1
 7.4 
11.3 
16.3 
21.8 
34.7 
 The taller
topgear combinations don't have very impressive
accelleration. A downshift is necessary for vigorous passing,
but
that's half the fun of driving, isn't it?

Tremec
3550/TKO/500 5speed 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
5^{th} 
Ratios: 
3.27:1 
1.97:1 
1.34:1 
1:1 
.68:1 
Dif. 
Speed@
1000RPM 
3.31:1
 7.1 
11.8 
17.4 
23.4 
34.4 
3.54:1
 6.7 
11.0 
16.3 
21.8 
32.1 

Tremec TKO
II 5speed 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
5^{th} 
Ratios: 
3.27:1 
1.97:1 
1.34:1 
1:1 
.83:1 
Dif. 
Speed @
1000rpm 
3.31:1 
7.1 
11.8 
17.4 
23.4 
28.2 
3.54:1  6.7  11.0  16.3  21.8  26.3 

Tremec
600 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
5^{th} 
Alternate
5^{th} 
Ratios: 
2.87 
1.89 
1.28 
1:1 
.82:1 
.64:1 
Dif. 
Speed@
1000RPM 
3.07:1
 8.8 
13.3 
19.7 
25.2 
30.7 
39.4 
3.31:1
 8.1 
12.4 
18.3 
23.4 
28.5 
36.5 
3.54:1 
7.6 
11.6 
17.1 
21.8 
26.6 
34.1 

Richmond
Gear 5speed ratios 

1^{st} 
2^{nd} 
3^{rd} 
4^{th} 
5^{th} 
Ratios: 
3.27:1 
2.13:1 
1.57:1 
1.23:1 
1:1 
Dif. 
Speed@
1000RPM 
2.88:1
 8.5 
13.1 
17.8 
22.7 
27.9 
3.07:1
 8.0 
12.3 
16.7 
21.7 
26.2 
3.31:1 
7.4 
11.4 
15.5 
19.7 
24.3 
