another schumacher header thread
For your performance question, 451 stroker "B" in a 65 Belvedere I, 490 lift Comp hyd cam, 9.1 compression pump gas, old Torker 383 intake, 750 AFB, Eddy open chamber 88cc heads, Petronix I ignition, 3500 stall converter, 4.10 gears, in a 3800 lbs car with me in it 11.96 @ 110 mph using the Shumacher tri-y-shorties with 18'' 2 1/2 dia open dump pipes. Spring for the ceramic coatings you will be glad you did.