I am wondering if anyone has flowed a set of 781 bb heads. the only mods to them are 2.18 1.88 stainless valves from comp products. the bowls were mildly cleaned up for the big valves. they were cc'd to 117. there was no gasket matching and only dingleberry clean up. thanx mike

There have been several posted. Just do a search on "781 flow". Sorry if that's too vague.

Look here (http://home.hiwaay.net/~ppatter/ovalvsrect.htm) for a comparison that should tell you what you want to know.

much thanx

Full on 781's flow about 312 intake. If you get more than that, you may have put in even larger valves, gone to a tulip, or a a master porter. I believe you can get more than 312, it is just that I have never seen a picture of one done up.