OUR BRAVO 335 FULLY ASSEMBLED BBC HEADS. FOR USE WITH HYDRAULIC ROLLER CAMS UP TO 620 LIFT. 123cc COMBUSTION CHAMBERS 335cc runners. This sale is for a set of heads (2 heads). CHECK OUT OUR NEWEST DYNO RESULTS POSTED BELOW USING THESE HEADS ON OUR BBC 572 PRO-STREET ENGINE. 830hp ON PUMP GAS. IT'S AMAZING THAT THESE HEADS ARE CAPABLE OF MOVING THAT MUCH FUEL AND AIR TO PRODUCE THIS POWER IN A PUMP GAS STREET ROD ENGINE. THAT IS OUR BEST HP NUMBERS ON A PUMP GAS SETUP TO DATE, AND WHO KNOWS HOW MUCH MORE THEY ARE CAPABLE OF. WE HAVE ACHEIVED APPROX. 875 ON A RACE FUEL…