I have a jag rear with 2:88's will 3:42's fit in the case?

[ng8264723]

I want to go with a different ratio. I'm going to sell my 4 speed (currently apart) and install a 5 speed so I want at least 3:42's
chris

[nevermind65]

The CWI site lists 2.88 - 5.11, but doesn't say whether they will all fit on the same carrier.

[Tom Kirkham]

2.88 has a unique carrier.
3.07 to 3.73 and (4.10) take the low case.
3.91 and bigger take the high case.

But a 2.88 will work with a five speed until you can find a different carrier.
Note: the total first gear multiplication on a stock 427 AC Shelby Cobra is 3.54 (stock diff ratio) * 2.32 (1st gear, close ratio toploader) = 5.86
Now your set up would be 2.88 * 2.87 = 8.27
as you can see 8.27 is a lot more total gear reduction than 5.86 which is about the lower limit and not burn up clutches.

Hope this helps

[Anthony]

Originally Posted by Tom Kirkham

2.88 has a unique carrier.
3.07 to 3.73 and (4.10) take the low case.
3.91 and bigger take the high case.

But a 2.88 will work with a five speed until you can find a different carrier.
Note: the total first gear multiplication on a stock 427 AC Shelby Cobra is 3.54 (stock diff ratio) * 2.32 (1st gear, close ratio toploader) = 5.86
Now your set up would be 2.88 * 2.87 = 8.27
as you can see 8.27 is a lot more total gear reduction than 5.86 which is about the lower limit and not burn up clutches.

Actually, with an "original cobra", the gear multiplication would be 2.32 x 3.54 which equals 8.21, very similar to the TKO600 1st gear 2.87 with 2.88 rears.

With this combo, definitely get the 0.82 fifth.

Another option would be to use a wide ratio toploader, 2.78 first, and with fourth 1:1, with 2.88 rears, you really don't need a 5th gear.

[ng8264723]

Thanks guys. Damn! Anyone want to buy a rear?

[John McMahon]

I ran a 2:88 rear with a Richmond Gear 5 speed (with the final drive being 1:1, not an OD fifth) and the car had an extremely usable power band.

[Tom Kirkham]

Anthony,

Thank you for catching my mistake.

[DMXF]

ng8264723 what is your email address for the diff?

[ng8264723]

Chris Heinis
chenis5950@charter.net
Oakham MA 01068