AFR 345cc Rectangle Port 24 Magnum Aluminum Cylinder Heads - Big Block Chevrolet 916091 Two styles are available: ALL13004

Two styles are available: ALL13004 is gray and constructed from a denser material to resist crushing and abrasions from rocks and debris

1975-1978 GMC C25

The 287 SRV shield is an injection-molded optically correct polycarbonate face shield

1999-2002 Dodge Ram 3500 Van

Homologation: Snell-FIA CMR-2016

AFR 345cc Rectangle Port 24 Magnum Aluminum Cylinder Heads - Big Block Chevrolet 916091 Two styles are available: ALL13004If huge horsepower is what you are searching for, the 345 can certainly deliver. These cyilnder heads were targeted at larger cubic inch engines, 509 632ci, looking for maximum horsepower and rpm capability with a primary operating range of 3500 8000 rpm's (This range is an average and will vary with engine displacement and component selection). As well, these aluminum heads provide impressive torque figures at higher rpm levels, so higher reving 450+