Yes, it is possible to change the 5th gear from 0.86 to 0.72. Don't be fooled into thinking that a 0.63 gear set or 0.72 gear set from a V8 Camaro with be the same ratio if swapped in to an S10 T5. The numbers all change because the gear teeth numbers are different. Also, you can't buy just any S10 5th gear set. Some won't work because of the tooling on the main shaft. I experienced this once when I promised my customer that I'd swap a 0.72 gear set for his 0.76. I found out that I couldn't do it because the snap ring location wasn't at the right place. He's happy with the 0.76 but would have been even happier with the 0.72. Nothing I could do about it though.

I have these websites saved as favorites on my computer. Very helpful.

RPM Calculator

Driven Gear Calculator and Tire Diameter Calculator - Both on Same Page - Skip the top paragraph section and just use the Speedometer Gear Calculator in the second paragraph and the Tire Diameter Calculator right below that.

I will also reference my own web pages for the following:

T5 Identification - What the tags and markings mean.

T5 Buyers pre-purchase checklist.

T5 input shaft swap - skip the adapter plate.


Last edited by Lugnutz; 07/21/2017 6:40 PM.