Anyone who still thinks that the modern Hemis just can’t make the same kinds of power that the 2nd Gen 426 Hemis could simply are living under a rock. Whether supercharged from the factory; turbocharged or suckin’ in air the old fashioned way, the modern third generation (G3) Hemis are monster Mopars and enough to continually get Ford and Chevrolet’s panties in a twist at NHRA events.

Like Summit Racing stated in a recent announcement, Hemis love airflow and AFR has three tiers of huge air-flowing cylinder heads to meet whatever your particular build requires. Offering a choice of 185cc, 212cc and a massive 224cc, AFR’s options for big power are immense. Just for example, the 224cc heads flow a staggering 393 cfm when paired with a .650 inches of lift. Those were Pro Stock numbers back in “the day.”

The latter two heads come CNC machined, CNC profiled combustion chambers. All three come full assembled with Viton valve seals and 10-degree valve locks. So if you’re running a modern Mopar and needing a serious top end this is going to be your route of attack. Check out the new AFR heads at Summit Racing today!

Here’s the original press release:
Gen III Hemis love airflow, and AFR Black Hawk Gen III Aluminum Cylinder Heads deliver. The Black Hawk heads have valve springs that can handle hydraulic roller camshafts rated up to .600-inch of valve lift, plus .750-inch thick decks that can deal with high-output naturally aspirated and power adder engines. AFR Black Hawk Gen III Aluminum Cylinder Heads are available fully assembled or as bare castings in driver and passenger side configurations.

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. 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 1.29- inch diameter PAC Racing dual valve springs. Assembled heads come with titanium valve spring retainers, 10 degree valve locks, and Viton valve seals.

185cc Cylinder Heads
These as-cast heads flow 332 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 1.29- inch diameter PAC Racing dual valve springs. Assembled heads come with stainless steel valve spring retainers, 10 degree valve locks, and Viton valve seals.