Driveline gearing/RPM calculator

[Immortality]

A handy website to compare transmission and diff gear changes

Gearing Analyzer with Shift Tracer

Enter gear ratios, tire and diff ratio to analyze RPM vs velocity at shift points with tracer

www.blocklayer.com

I'll add all the common Holden gearbox ratio's shortly

 

[Immortality]

Common transmission ratio's

4L60e

1	2	3	4	R
3.059	1.625	1.000	0.696	2.294

T5 V6

First........ 3.25:1
second..... 1.99:1
third........ 1.29:1
fourth...... 1.00:1
fifth......... 0.72:1

Reverse.... 3.15:1

T5 V8

First: 2.95
Second: 1.94
Third: 1.34
Fourth: 1.00
Fifth: 0.73

T56

1st	2nd	3rd	4th	5th	6th	Rev

2.66:1

1.78:1

1.30:1

1.00:1

0.74:1

0.50:1

2.90:1