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driveline issues

bigbadchev84

1/2 ton status
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May 17, 2004
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Hermiston, Oregon
Uh.......I somehow dont think this is gonna work well......I just got my rear driveline shortend. So what do you think? point the pinion up? already dropped the x-case by swapping spacers..it dropped 1" should I go more?

truck swap 001.jpg

truck swap 002.jpg

truck swap 003.jpg
 
First, you will crack the frame with the spacers switched. They are too small (and hence put too much force onto a small area on an already weak frame), you can buy/make good spacers if that's really the route you want to go.

Second, you will probably have crazy vibes. 9" of lift is WAY to much for a slip yoke, not to mention how much stress is put onto the t-case output and u-joints.

You can point the pinion up some, but if you point it up too much you will starve the pinion bearings of oil and your diff will be burnt in short order. I would say 6-8 deg is the max for a truck that sees street time.
 
9" of lift is CV time. I get good vibs with 4.5" of lift and I can max out the operating angle if the rear axle droops to much. I have to limit my axle droop in the center otherwise the ujoints bind and blow up.

Harley
 
fix that with an NP205 (longer driveshaft), with CV joint. I just did an NP208/NP205 swap and at lengthed the rear shaft by 12". That should help your angle right there.

Adam
 
Well I just scored a rebuilt sm465/205 with 12" flywheel and clutch from a buddy. Does anyone know the overall length of a 465/205 fixed yoke vs 465/208 slip?

Also what is a good price to get out of a 465/208 with flywheel and clutch in great working order?
 

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