Core shift eagles

So a kid that helps me out around the shop wanted to port his own eagle heads he is going to put on an older 5.7

I notice the bowl has a big machine cut in it that I havent seen before.

I flow the head and its the best damn eagle head I have flowed. Being that he has very little experience porting this turned into a blessing.

I checked my other eagle heads around the shop and none are like his set. Flow numbers untouched are
.1 78
.2 135
.3 207
.4 263
.5 300
.6 325

Cleaning up that machine cut and gasket match picked up 10 cfm at .3 and .4 and 6 cfm at .5 and .6.

Calling it good. As Im watching him struggle a little bit with just that

That's Cool, I'd love to run a pair, just not in the budget right now.