Has anyone done this yet? Will the oil pan fit? What about headers? I was looking at the 350/290, but!!!
Thanks

I use to know a guy with a ZZ4 in a 64 chevelle and also a ZZ1 in a 64 vette. Both used the pan that cam with the motor. Should`nt be a problem with the smallblocks. For headers I would use 1 5/8" standard headers.

I have a ZZ4 in a 65.. no problem with the fit.

I just put the 330 hp in my 65 and there were no problems with fit.