Edlebrock 60917 NHRA head

[Tom Broome]

Originally Posted by hrs1326

Can someone enlighten me on these heads? It seems the exhaust ports are re-positioned from stock?? Exhaust flanges shortened???
Using these on a Super Stocker and they are causing some real grief.

I expect what Mike is saying is....Yes, fully prepared (ported/welded/etc.) SuperStock heads, regardless of origin, probably have had the exhaust ports relocated somewhat, and had the flanges cut down for port volume reasons. Without seeing what you're working with, I'd anticipate that exhaust flange adapters, properly matched to the port center-lines are going to be necessary.