I would not buy their 4.6L heads , I had a set that had leaky valve guides/seals , brand new out of the box , burned oil from first startup , SUCKED , never seen anybody with that issue on a 5.0 but I would be leary after my experience
There was a big thread on the Corral about Patriot heads that was back and forth so finally Jason @ AFR ordered a set of Patriot heads at his home address. He took them to the shop @ AFR and had them flow tested. Here are the results..
Here were the flow numbers off our equipment using a Brezenski radiused entry on the inlet side and the same flowtube we use on all our SBF / SBC testing on the exhaust. By the way our advertised data on our 185 exhaust is old and doesn't reflect the addition of a flowtube which adds 10-15 CFM across the board. Tony is going to flow a 185 production part early next week to provide a good comparison. In the mean time I have included info from an AFR 165 head we spot flowed a few weeks ago?.note this head only has a 1.900 intake valve (Versus the 2.02" in the Patriot).
