Archangel LS7 CNC Ported Cylinder Heads

The American Heritage Performance Archangel LS7 Cylinder Heads are engineered to be the highest flowing LS7 cylinder head on the market. They feature a precise 275cc intake runner and a 99cc exhaust runner designed to maintain high intake air velocity, which translates into exceptional power and torque across all RPMs. These heads are based on the Aftermarket Brodix BR7 LS7 Cylinder Heads but are enhanced with AHP's proprietary CNC porting program, AHP Valve guides, and AHP Valve Seats. Construction includes a Custom AHP Performance Valve Job with hand blending, featuring 45-degree intake and exhaust seats for enhanced durability and longevity. The heads utilize AHP Moldstar90 Valve Guides, the same material found in Formula 1 and Indy Car cylinder heads. Standard included components are AHP 2.250" Titanium Molybdenum Intake Valves or Hollow 2.250" SS Intake Valves, and Ferrea F2042p 1.615" lightweight Hollow Stem Exhaust Valves. Optional upgrades are available for exhaust valves and valve springs, including PAC and PSI options, with specific compatibility notes for Hollow SS Intake Valves. The heads are compatible with stock LS7 rocker arms and can also accommodate aftermarket options like CHE LS7 rockers, Comp BSR LS7 shaft mount rockers, or Yella Terra Roller Rockers. These cylinder heads are ideal for maximum power naturally aspirated, boosted, or larger displacement (427ci and up) builds. They can also be installed on an otherwise stock LS7 engine and notably require no tuning when bolted onto a bone stock LS7. The heads are compatible with both stock 4-bolt GM blocks and aftermarket 6-bolt blocks (LSX, LSR, Dart LS Next, RHS). A minimum bore size of 4.120" is required to run these heads, and ARP Head Bolts or ARP Head Studs can be used.