Is it safe to use the driveshaft from a slant 6 904, on a v8 360 904?

myasylum said
See now, that kind of hangs me up. No I don't do alot of racing, but I do like to smoke the tires and beat on it a bit. I mean the stock slant six is what 110 hp, now I'm dealing with about 400 plus, that seems like a lot more then that shaft has has to endure. So I guess thats what I worry about. If you guys think it should be safe I'll go with it, and just get new U joints. It would be much cheaper admittedly.
Thanks!

Burnouts aren't going to be an issue.... UNless you are planning on doing burnouts into 3rd gear and hitting more than 6000rpm...

Change the joints, the joints in there may have been in there and have some wear..

If you aren't going to fly down the highway and try and hold it near your max rpm you'll be ok

pettybludart said
I ran 7260/7290 crossover u-joints in my race car running over 100 passes at 11.00-10.80@123mph,never had 1 problem with u-joints.Was I just lucky??

Playing with fire, seems in my experience that your better off with a square side joint than 2 opposing in performance apps, i have seen the few like you, but have seen the many that always warns that its a few. .

myasylum said
Can you replace u joints yourself? Or is that something you should take to a professional shop? Also of If have 1.078 cap diameter is there a u joint you suggest?

If you're feeling nervous and or not understanding then let someone do it that knows, not a friend that read about it online...
It is VERY easy to F it all up and need a new weld yoke or a new tube..

70aarcuda said
well..here is one from experience....drive shaft ripped apart...conversion u joint still attached to rear end yoke...

the u joint get my vote to be stronger then the driveshaft...and look it has a grease fitting too.

happend a month ago at MATS..in 71 Demon 360

That has the evidence of a weld failure or a 2 part issue of weld and assembly of the weld yoke to the tube, and the china joint is in backwards, grease fitting to the shaft.

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