Wow! I just got my stroked Pontiac motor back from the machine shop on Friday. Today I finally received the back ordered ram air III manifolds. It was very obvious they weren't going to work dumping to the rear. Tomorrow I will be dropping my motor back in the 59.
I'm still having some problems with the roller rockers interfering with the valve covers, but i will sort that out soon. Thursday the truck goes to the exhaust shop.
Just for comparison my pontiac is a 1960 389 bored .040 over stroked with a 1/2 inch stroker to make 449 inches. The heads are the 1960 cast iron heads reworked for better breathing. The timing cover is actually 1958 gmc, and the block has been drilled for reverse flow like the 1955-1959 pontiac and gmc v8 motors. A 1957 pontiac tripower sits on top. The bellhousing is a 1955-1959 gmc v8 bellhousing with a 12 inch clutch inside. I'm hoping to be able to drive it again by labor day.
