: 71 vs 80' THtreefiddy


shaggyzukin
10-09-2002, 10:48 PM
Would a 1971 th350 from a truck have the same spline count and bolt pattern (to adapter) as a 1980 from a blazer? I guess what I'm askin is, can I bolt a 71 gm truck th350 into my 1980 blazer?
I was told they are all the same, but I'm sure some are different.
Shaggy

tRusty
10-09-2002, 11:21 PM
GM had trouble with the earlier TH350's cracking the bell housings so in the later years they came out with the 'K' case TH350. The material is thicker in the bell area to help prevent cracking. ID'ing the 'K' case TH350 is pretty easy...there's a large 'K' cast into the bell area:D

Aside from that the spline count should be the same...27 spline.

Rene

shaggyzukin
10-10-2002, 12:28 AM
cool, thanks. I'll check the bell. If the thing is going to work, I'm going to buy it tommorow and intall it. Should hold me over until, I get mine rebuilt.
Shaggy