Ah, I was looking at the other Red grinding area on the valve guide. I thought that was what you where referring to as the Humber hump. Ive not started on the area where the water jacket is.
Any idea what I’d be flowing with just the work I’ve done so far?
If I don’t bugger these heads they will be going on my ‘73 340. Fairly stock apart from a Weiand Action Plus, 670cmf Holley Street Avenger and Headers.
Eventually they would go on my other ‘72 340 that’s getting built with 10.5:1 pistons and a 274 Comp Cams Cam Shaft. It’s getting 2.02” J Heads but if these would out perform them then I might as well swap them out. :)