HOW TO MAKE 500+ HP WITH STOCK 706 HEADS. 706 VS 799 VS LY6 VS TFS HEAD TEST! 514 HP WITH 232 CFM!

CAN YOU MAKE MORE THAN 500 HP NA WITH STOCK 706 HEADS? DO 799 HEADS MAKE MORE HP THAN 706 HEADS? WHAT MAKES MORE HP, REC PORT OR CATH PORT HEADS? WHAT ARE THE MOST POWERFUL FACTORY LS CYLINDER HEADS? WHAT HEADS WORK BEST ON A CAMMED 6.0L? WHAT ARE THE BEST STOCK LS  HEADS? CHECK OUT THIS VIDEO WHERE I COMPARE ALL THE POPULAR FACTORY LS HEADS, INCLUDING THE 706, 799, LY6 (821/823), THEN TOSS IN A SET OF CNC PORTED TFS 225 HEADS. WHAT HAPPENS WEHN CATH PORT HEADS FLOW AS MUCH AS REC PORT HEADS? WHICH ONE MAKES THE MOST POWER? IT'S ALL HERE IN 1 VIDEO!

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