[Coleydog]

Ok... I don't think the tube length on my 340 Engine is right, I think they build too long a pipe. All I want is just a general size for the 3.25-3.5 stroke crank, since after 60 years someone should have it pretty close give or take a few inches, not trying to fine tune to the 1/4 inch. How about 66-327 Chevy 2, 69 Z-28 302, 70-1/2 Camero Z28-350, all running stock. I had off the shelf pipes on them then but can remember what size after all this time. Just a good starting point to compare. Thank you