The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - 1985 c10 rearend (https://67-72chevytrucks.com/vboard/showthread.php?t=832164)

WETOWM

03-16-2022 04:03 PM

1985 c10 rearend

I have a 1985 c10 2wd pickup is the 8.5 rearend a 28 or 30 spline axle

GRADYS Performance

03-16-2022 05:01 PM

Re: 1985 c10 rearend

30 Spline

Rich84

03-17-2022 08:32 AM

Re: 1985 c10 rearend

I thought that they went to 30 spline in 88. My 84 was 28 spline.

WETOWM

03-17-2022 09:11 AM

Re: 1985 c10 rearend

I was wanting to order a posi unit for it before I took it apart and want to order the right one I guess I may have to take it apart to be sure ?

THI	03-17-2022 11:17 AM

Re: 1985 c10 rearend

Quote:

Originally Posted by Rich84 (Post 9052449)

I thought that they went to 30 spline in 88. My 84 was 28 spline.

1989 was the official change to 30-spline for square bodies, some 1988's did receive 30-spline in late production vehicles. I found this out with a 1988 K20 Suburban - was supposed to be 28-spline front with an NP208 transfer case, mine was built June 1988 and had 30-spline axles in the front with an NP241 t-case.

All times are GMT -4. The time now is 02:51 PM.