PROMAXX Performance Shocker Series Big Block Chevy Cylinder Heads

5.0 out of 5 stars 1 Customer Reviews

PROMAXX Performance Shocker Series big block Chevy cylinder heads are professional designed cylinder heads utilizing the latest CNC porting tools and techniques. Th

PROMAXX Performance Shocker Series big block Chevy cylinder heads are professional designed cylinder heads utilizing the latest CNC porting tools and techniques. These heads out flow the competition at a price that cannot be touched. The 340 heads will flow over 415 cfm and the 370 heads will flow over 450 cfm, so your engine will never be starved for air. Shock the competition without breaking the bank by ordering a pair of PROMAXX Performance Shocker Series big block Chevy cylinder heads. Features, items, and specs: * 340 or 370cc fully-ported runners * 5-angle valve job * 24 degree intake valve and 15 degre

Showing In Stock Items. Show All 7 Items.