Saw, I've got a 305 in my 64, runs great, I only use straight 30w oil in it. I had a 307 bored to 4 in. making it a 327 big journal, which I ran in my stock car for 2 years without any problems, then sold it to a guy that put it in his camaro with a tunnel ram and ran it for another couple of years, hard and it never expired..........resto44