I put a 8.1L in my 67 short bed if that counts.

the torque was amazing. I had a TH400, stock heavy duty torque converter, and 3.73 gears with eaton posi, and 295/50 R15s.

I was running a Do It Yourself fuel injection controller, megasquirt, controling fuel, and wasted spark ignition.

I installed a ZZ502 crate engine camshaft. The 8.1 responded very well to the camshaft except that I had intake valve to piston contact. A few weeks after the install 2 pistons fell apart.

The 8.1 is at the machine shop getting a sleeve in #6 hole and being bored .030.

pictures and other information on my website.

www.lt1swap.com