When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hey i have a 76 f250 highboy, with a 390 redid everything front diff and rear diff looked good. Just a question front end seems to bounce when hubs locked but 4x4 isn,t engauged ? this happenes when driving down a road etc? also does it a bit but not much when hubs unlocked? could it be the wheel alignment? balancing ? also front drive shaft where the yoke is there is a bit of play ? how can i fix that or do i need a new drive shaft? also is the 4 speed tranny exposed to have a bit of play when driving or is this due to the 1 bolt that holds it on the frame?
Lift the front axle and check the front wheel bearings for play.
Second check the front driveshaft slip yoke.
Third, check the front drive shaft for any bends.
Forth, check the u-joints on the driveshaft and u-joints on the front axles.
Check the transmission mount and check if it the rubber is cracked or broken, R&R if necessary.