CAN VORTEC 350 CHEVY HEADS MAKE POWER? HOW WELL DO L31 VORTEC 350 HEADS WORK? HOW CAN I MAKE 400 HP FROM A JUNKYARD 350? CHECK OUT THIS VIDEO WHERE I TOOK A 190-HP GM CRATE MOTOR AND ADDED VORTEC HEADS AND A MILD COMP CAM. I THEN ADDED EVEN MORE MODS (VALVE JOB, WINDAGE TRAY, MILLING) TO FURTHER INCREASE THE POWER. THIS VIDEO SHOWS THAT EVEN THE STOCK VORTEC L31 HEADS CAN OFFER IMPRESSIVE POWER. PLUS, A VERY COOL TEST ON HOW DIFFERENT LONG-TUBE HEADERS CHANGE THE POWER CURVE. CHECK IT OUT.