1986 GMC S15

Transmission problem
1986 GMC S15 V8 Four Wheel Drive Automatic 200 miles

I have a 1986 gmc k2500 with a turbo 400 auto tranny with a 208 transfer case. I put a built up 350 in it and lifted it with a 6 inch lift on 35s. I put 411 gears and posi and I dont like the auto. Fot reasons of power mostly. I have a 76 k5 blazer with the same set up but with a sm465 tanny(4 speed with granny low) and a 205 tcase. AND I LOVED IT! So im wondering on how much work it is to swicth over and some mods I may have to make? Thanx
February 2, 2008.

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