Are you building a Gen III Hemi? Looking for more out of your 5.7L Hemi or maybe your 6.4L Hemi popped a piston and now you need new heads; it happens, ask us how we know. Well, now you have some great choices with new Air Flow Research’s Black Hawk line of Gen III Hemi cylinder heads with fast and free shipping from Summit Racing Equipment.

Air Flow Reasearch (AFR) has been pushing the flow limits of cylinder heads since the 1970s. AFR is a little more well-known in the Chevy and Ford industries for their performance and quality. They have brought all the same techniques and applied it to Gen III Hemi’s and now giving us a couple more options.

AFR Black Hawk Gen III Hemi cylinder heads come in three different sizes. The cylinder heads are offered in 185cc, 212cc and 224cc. They also features such as extra thick .750 inch head deck that will handle boosted applications with no problem.

They have also enhanced the water jackets for better cooling of the head, yet kept port-to-water jacket thickness of a minimum of .200 inch. All three sizes are designed to be used with cams up to .650 inch of lift. Below you can read more about the differences in the three different sized heads.

224cc Cylinder Heads
These heads flow 393 CFM on the intake side at .650 inch of lift. They feature CNC-machined 224cc intake and 75cc exhaust runners, your choice of 69cc or 73cc CNC-profiled combustion chambers with 2.165 inch intake and 1.650 inch exhaust valves, and 1.270 inch diameter PAC Racing dual valve springs rated to .600 inch of valve lift. Assembled heads come with titanium valve spring retainers, 10 degree valve locks, and Viton valve seals.

212cc Cylinder Heads
These heads flow 376 CFM on the intake side at .650 inch of lift. They feature CNC-machined 212cc intake and 75cc exhaust runners, your choice of 69cc or 73cc CNC-profiled combustion chambers with 2.125 inch intake and 1.650 inch exhaust valves, and 1.290 inch diameter PAC Racing dual valve springs rated to .600 inch of valve lift. Assembled heads come with titanium valve spring retainers, 10 degree valve locks, and Viton valve seals.

185cc Cylinder Heads
These as-cast heads flow 3326 CFM on the intake side at .650 inch of lift. They have 185cc intake and 75cc exhaust runners, 69cc combustion chambers with 2.050 inch intake and 1.590 inch exhaust valves, and 1.290 inch diameter PAC Racing dual valve springs rated to .600 inch of valve lift. Assembled heads come with stainless steel valve spring retainers, 10 degree valve locks, and Viton valve seals.

All three size of AFR Black Hawk heads can be purchased straight from Summit Racing Equipment’s catalog fully assembled or bare casting. You can also purchase the heads individually in driver or passenger side versions.