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Author Topic:   Driveshaft length?
FASTLAP
Dirt Maniac

Total posts: 171
posted December 03, 2004 04:28 AM  
Buddy of mine has a 108" wheelbase car. going to run a Brinn tranny. Only thing is noone can tell him what length driveshaft he needs. I couldn't tell him, cause my last car was 112". The Brinn would be the same length as the GM tranny's (I think). Anyone out there with a short 108" car?

x13jc
Dirt Freak

Total posts: 390
posted December 03, 2004 06:56 AM  
Also depends on what type of rear suspension is being used, with some 4-bar or short link cars you may need a longer slip yolk and shorter shaft.

FASTLAP
Dirt Maniac

Total posts: 171
posted December 03, 2004 06:42 PM  
quote:
Originally posted by andykmod:
Also depends on what type of rear suspension is being used, with some 4-bar or short link cars you may need a longer slip yolk and shorter shaft.

Sorry, forgot to mention 4 bar. Thanks, x. What length would we be looking at for a long slip yoke/ short shaft? Would it be about the same?

CD00
Dirt Roller

Total posts: 14
posted December 03, 2004 08:43 PM  
30 1/2

speedy46
Dirt Maniac

Total posts: 165
posted December 04, 2004 06:59 AM  
just give pat fagen at fast shafts a call they him what u need and he will hook u up

andykmod
Dirt Freak

Total posts: 351
posted December 04, 2004 07:20 AM  
Mine is 28in. with a 8in. slip yolk, And yes give Pat a call, super nice people and quick turn-around time.

boas51
Dirt Maniac

Total posts: 190
posted December 05, 2004 11:06 AM  
with the engine 72 inches from the diff, the wheelbase wouldnt matter.

jason lee
Dirt Roller

Total posts: 10
posted December 05, 2004 03:02 PM  
hey everyone, we just jack the rear end up and let the suspension unload all the way and measure it that way, and we have a 4 bar car also

boas51
Dirt Maniac

Total posts: 190
posted December 06, 2004 06:23 AM  
i do it the same as jason, just make sure you have maximum angle in the 4 links when you measure because this is when you will get the most travel. also make sure you have enough in the tail of the tranny at ride height, plus a little for bump. a stock yoke is barely enough, if enough.

nolimit92
Dirt Forum Racer

Total posts: 97
posted December 10, 2004 08:28 PM  
we use a 29 3/4 driveshaft with a 4 bar car. 72 1/4 rearend to back of engine. 7 inch yoke.

Mike

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