Wake Up Your Small-Bore GM LS with AFR Mongoose 214cc Street CNC Cylinder Heads

Air Flow Research (AFR) Mongoose 214cc Street CNC Cylinder Heads are a sure bet for waking up the performance of your GM LS 4.8L or 5.3L engine. Here's why.

Engineered specifically for these 3.780-inch bore engines, the fully assembled cathedral port heads feature CNC-ported runners and combustion chambers for smoother, more efficient airflow. The result is a strong, usable mid-range and top-end performance that makes the heads ideal for street, strip, and towing engines up to 383 cubic inches and revving to 6,500 RPM.

Moreover, the AFR 214 Street CNC heads are made on the same permanent-mold casting with .750-inch decks as the rest of the Mongoose LS head lineup. This means you can throw large amounts of boost and nitrous their way with total confidence.

Specifications
• CNC-ported 214cc intake and 90cc exhaust runners
• CNC-ported 65cc combustion chambers
• Competition 5-angle valve job
• 2.00-inch intake and 1.57-inch exhaust valves with 8mm stems
• 15-degree valve angles
• 1.29-inch Pacaloy dual valve springs rated for up to .600-inch of valve lift
• 7-degree steel retainers and valve locks
• Viton® valve seals

SEE THE AFR MONGOOSE 214CC STREET CNC CYLINDER HEADS HERE