Thanks for your help.
My 57 3100 was an original V8 so it already has the radiator moved back some compared to a 3100 with a 6 cylinder. But the engine is not original. It would have had either the 265 or the 283. Now it has a 283 but from a 60 era vehicle. Basically the same but the fan was quite a bit back, maybe the pully is different from the original, so I put a 1 inch spacer in to get it to about 1.25 inches from the radiator. I think the manual says it should be 3/4" from the radiator.
I am using the original V8 front mount style motor mounts. Everything should be about the same as original.
Some pictures of my truck and the radiator shroud are here: http://home.comcast.net/~svwilbur/ChevyPU57_work.html
Last edited by svwilbur; 05/12/2008 5:05 AM.
