Help me choose 915 ratios

[Fishcop]

Hi guys

I'm rebuilding my transmission and have the following ratios - a choice of 3rd and 4th gears...

1st (AZ) 11:35
2nd (HX) 18:33

3rd (NT) 23:29
or
(PR) 25:27

4th (QQ) 26:26
or
(SN) 28:23

5th (SM) 22:28

I've had it explained that you "flip" some gears to create others? How does that work?

Box is a 915/62 (ROW) '81 SC - 8:31 R&P and sits in front of my 200hp RS spec 2.7; the majority of my driving is country back roads and the occasional track day, so I want a fun 1-4 with a cruising 5th

Cheers

[Bill Verburg]

I'd use the stock 915/62 gearing, I started to put in you alternate gearing but it was getting too ugly too fast to proceed.


If you want a shorter box 915/63



and if you want a pure race box
915/71

[Fishcop]

Thanks Bill

I guess I'll stick with stock after all...

[DanielDudley]

My last SC was geared like the last chart [race]. That is a lot of fun on the street.

[Sgrun]

Is the spreadsheet that Bill is using available somewhere? This would be great to be able to experiment with.

Thanks
Steve