Early 90's Gearbox ratios?
Early 90's Gearbox ratios?
Author
Discussion

slowride81

Original Poster:

2 posts

204 months

Wednesday 2nd September 2009
quotequote all
Hello!

I'm trying to locate some information on the early-mid 90's AJP 450bhp V8 Tuscan Challenge Series cars.

From what I understand the Gearboxes were Borg Warner T-5 5 speeds.

Would anyone have some information on the gear ratios and final drive/rear-end ratios used in the series?


Thanks for any help you can provide.

shapeshifter

1,181 posts

251 months

Wednesday 2nd September 2009
quotequote all
Try calling John Reid.

slowride81

Original Poster:

2 posts

204 months

Thursday 3rd September 2009
quotequote all
No one else has any information?

heightswitch

6,322 posts

279 months

Thursday 3rd September 2009
quotequote all
slowride81 said:
No one else has any information?
How long is a piece of string.

all manner of different gearbox and final drive ratios will have been used during the top flight days of the tuscan challenge. Your best bet would be to contact quaiff and ask what gear cluster ratios are available for the T5 and you will have your answer.

N.

Graham

16,381 posts

313 months

Thursday 3rd September 2009
quotequote all
I thought the Challenge ratios were fairly well screwed down 2-3 diff ratios and 2 gearbox setups?
im sure thats all in the regs i've got somewhere..

JR will be the best place to start though

G

Guillotine

5,516 posts

293 months

Thursday 3rd September 2009
quotequote all
From the official regs, sealed values are...

T55
1st 2.95:1
2nd 1.94:1
3rd 1.34:1
4th 1.00:1
5th 0.80:1

T45 dog box
1st 2.43:1
2nd 1.56:1
3rd 1.24:1
4th 1.00:1
5th 0.897:1

Andy 89
BTW Diff rates/limited slips are free

Edited by Guillotine on Thursday 3rd September 22:41

wedgeman

1,326 posts

272 months

Friday 4th September 2009
quotequote all
Wheel/Tyre dimensions were also control:

Dunlop Slicks : 250/640/18 ---------------
Dunlop Wets : 235/640/R18 B44W404/SP9000

As Andy states you could only play with the Diff ratios.

Cheers

Howard