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-   -   Driveshaft angle, how much is too much? (

LiftFlat 08-07-2007 09:16 AM

Driveshaft angle, how much is too much?
Building a '31 Dodge pickup with a 318/727 combo.

Rough mesurement tells me the drive shaft will be about 2 1/2 feet long.

I have the engine sitting about 3-4 degrees, as is the rearend, but they are on about a 9-10inch different plane...kinda like those guys with lifted 4x4's.

I'd estimate that the drive shaft angle will be 15-20*'s, easy enuogh to compensate with the perches on the rearend, but not a lot to do coming off the tranny.

What's my best way to approach this?

Leave it?

Angle the rear?

Look for a high pinion 9inch?

I don't want to set the engine and tranny down any further, and the Crank centerline is just about even with the top of the frame rail right now.

Looking for options before I start covering the chassis with sheetmetal;)


OneMoreTime 08-07-2007 10:13 AM

Please do a search on the site about drive shaft angles and it may even be in the wiki..Sounds like waay too much difference to me to be very durable..

I blocked my chassis at ride height with the springs disconnected in order to figure this one out and had to lower the car quite a bit to get everything to work out..wound up with the chassis height about at the scrub line..BTW my driveshaft is about 15" long..


techinspector1 08-07-2007 10:32 AM

If you'll read through this and click all the links that are highlighted in blue, you'll get a pretty good education on u-joints, angles and driveshafts. This is the best article I've read on the subject.

LiftFlat 08-07-2007 11:03 AM

Good read on the link, looks like I'll have a bit of "adjusting" needed to get things right.


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