Running Gear Swap

[RJG]

I need a little input from you experts so here we go. I've got a '73 Blazer and have always wanted to change it over to a 4-speed. A possible donor truck is now available which is a '76 Chev 3/4 ton G-20. If I bought it and wanted to move the tranny and transfer case over to my Blazer, would it be a relatively easy swap? I don't want to start this project if it would involve much more than the obvious modifications like cutting a hole for the shifter. The Blazer currently has a TH350 and NP 203 and 350 engine. The '76 is all stock from the factory. Thanks

 

[Blue85]

What are you looking for - overdrive or a manual transmission? Because the 4-speed autos didn't start until the 80's and the SM465 doesn't have O/D. The extra gear is granny low.

 

[nvrenuf]

'76 Chev 3/4 ton G-20

A "G" series will be a van, could it be a "K" series (4wd pick up)?

 

[Mdjunior]

I’ve done it about 35 years ago. Swap pedals from truck to truck. Swap the humps out if you dont want to cut the auto hump up. I think all mounts underneath would be the same. Not 100% on drive shafts. I had to make all new as I royally f’d up my rear driveshaft before the swaps.

 

[Chickntrk]

If it was me, I’d get an 85 up and go hydraulic clutch. The 76 will be bolt in if you get everything from the parts truck. Shouldn’t even need to cut a hole if you use the trans tunnel cover from the 76