Thinking of upgrading my 1 5/8 Hooker Competition headers while my engine is pulled. Curious if there would be a significant power increase by using a larger primary tube setup. This is what I have:
408, around 11.6:1
Ported Performer RPM heads
65cc chambers, 270/232 @.500, 280/240 @.600
Solid cam, 250/254 @.050, 588/600 lift, .010/.012 lash
Rons toilet injection on alcohol
Timing set at 35*
Manual VB 727 with ~4800 stall 8� converter
4.30 gears, 28x10.50 tire
Weighs 3250 with...
Header upgrade
