The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1971 K20- project just get driveable!!

Vintage Windmills · 01-03-2019, 02:29 PM

Well I finally got more than 2 days off in a row without a ton of commitments, so I worked on the truck a little.

I rebuilt the old front driveshaft that was clanking in 4wd. I rebuilt the cardan assembly with 2 new Ujoints and a new centering ball setup. I used a little press and it was not as hard as I thought it would be. Hardest part is reinstalling or removing the shaft thanks to the ridiculous backwards bolts on the transfer case output yoke. Thankfully it wasn't too hard to pull the seat and high hump out to get access from in the cab.

I also put the old 235/85/16's back on for driveway plow truck duty.

Runs really smooth now. I didn't balance the front driveshaft but probably don't need to since i don't use 4wd on the road. This is only on the roads in the summer and my personal driveway and acreage in the winter.

01-03-2019, 02:29 PM	#357
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: 1971 K20- project just get driveable!! Well I finally got more than 2 days off in a row without a ton of commitments, so I worked on the truck a little. I rebuilt the old front driveshaft that was clanking in 4wd. I rebuilt the cardan assembly with 2 new Ujoints and a new centering ball setup. I used a little press and it was not as hard as I thought it would be. Hardest part is reinstalling or removing the shaft thanks to the ridiculous backwards bolts on the transfer case output yoke. Thankfully it wasn't too hard to pull the seat and high hump out to get access from in the cab. I also put the old 235/85/16's back on for driveway plow truck duty. Runs really smooth now. I didn't balance the front driveshaft but probably don't need to since i don't use 4wd on the road. This is only on the roads in the summer and my personal driveway and acreage in the winter. Attached Images __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6