4WD vs 2WD rear axle shock mounts and pinion angle
I originally posted this on Diesel Truck Resource, but after 3 months and a few TTTs, I have not had luck getting any information.
I am in the process of converting my 140k mile 1998 12 valve QC 5 speed from 2WD to 4WD. The truck has the factory tow and camper packages. I purchased a straight 1998 4WD frame with front suspension and Dana 60 axle with 180k miles from a salvage yard in Texas. I have refurbished the front axle, stripped the frame and painted both. The 4WD frame is now fully reassembled with the exception of the rear axle. I want to re-use my 2WD Dana 80 rear axle. I've purchased an installed a 4WD cover on the Dana 80. The fill hole is 1" higher on the 4WD cover. I've seen pics on the web that show the position of the rear axle shock/antisway bar brackets. The 2WD and 4WD brackets are positioned differently. The 4WD brackets are clocked so the mounting holes for the shocks are closer to the frame. I've read the pinion angle is different between 2WD and 4WD - I think this can be addressed with wedges.
I will be grinding the welds off the shock brackets, re-clocking them to the 4WD position and welding them to the axle tube.
Does anyone live in southern Louisiana who wouldn't mind me pulling measurements from your truck?
Thanks,
I am in the process of converting my 140k mile 1998 12 valve QC 5 speed from 2WD to 4WD. The truck has the factory tow and camper packages. I purchased a straight 1998 4WD frame with front suspension and Dana 60 axle with 180k miles from a salvage yard in Texas. I have refurbished the front axle, stripped the frame and painted both. The 4WD frame is now fully reassembled with the exception of the rear axle. I want to re-use my 2WD Dana 80 rear axle. I've purchased an installed a 4WD cover on the Dana 80. The fill hole is 1" higher on the 4WD cover. I've seen pics on the web that show the position of the rear axle shock/antisway bar brackets. The 2WD and 4WD brackets are positioned differently. The 4WD brackets are clocked so the mounting holes for the shocks are closer to the frame. I've read the pinion angle is different between 2WD and 4WD - I think this can be addressed with wedges.
I will be grinding the welds off the shock brackets, re-clocking them to the 4WD position and welding them to the axle tube.
Does anyone live in southern Louisiana who wouldn't mind me pulling measurements from your truck?
Thanks,


