73-87 Chevy _ GMC Trucks > Rear Drivelines, Drive Axles and Gearing

Driveshaft durability

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Swampyankee74:
I have a 74 c1500 which originally came with a 250 6cl. I now have a 465 horse small block with a m21 tranny.  Is the stock driveshaft going to be able to handle that with occasional abuse? Or turn into a twizzler?

JohnnyPopper:
LOL Red twizzler

Pry a bd question.

VileZambonie:
Didn't you say you were lowering it? If so what method did you use to lower the rear? Check your operating angles, make sure appropriate clearance, slip and good u-joints. Download the angle meter app on your phone.

Swampyankee74:
I did lower it 4 inches in the back by spring hanger and shackle method. I'll make sure all clearances, and that the slip yoke isnot to far into the tranny, and new u joints. Just checking to see if that old tube could take the beating.

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