Pontiac engine in a C10

[hatzie]

I ran a 1985 Olds 307Y & TH200R4 from a wrecked Delta 88 in a 1974 C10 and a 472 Cadillac V8 in a 1979 K20.

The 307Y had noticeably more torque than the smallblock 305 it replaced and was noticeably better on fuel than the clapped out 350 & TH350 I pulled out. I used the 1979 Olds 350 Diesel motor mounts and re-located the transmission crossmember. It fit great.

The 472 was an animal but fitting it so it wasn't a bodge job was a challenge. All kinds of fun to mate the SM465 & transfer case with the Caddy engine. I ran 1985 pedals and clutch master. It's a BOP bellhousing bolt pattern but the Caddy starter doesn't clear the Olds & Pontiac bellhousings. I ran a Buick bellhousing. That one cleared the Caddy starter. There was a bracket kit for using the 1985-1991 CK/RV hydraulic slave cylinder.

A buddy had a 472 Caddy in a 1977 C20 towing a 29' Airstream back in 1992. The TH400 & Caddy engine didn't take a lot to install in a 2wd truck. Cliff said he could accelerate Southbound up the grapevine with the AC running with that beast in tow. I drove it up the other side going North from Burbank to Santa Clarita and it had torque to spare even with that big 29' two axle monster behind it.