hotrodbelair
01-01-2007, 01:59 PM
when i rebuilt my ex last winter i bought a head that was ported 1mm bigger intake valves 3 angle valve job. it was off a 460 stroker. and its on a 440 bore kit. the exhaust valves were left stock and exhaust ports were barely ported i was wondering if i ported the exhaust out more if i would gain more top end from it. i have a friend that owns an engine shop he has a flow bench and is gonna be buying a porting program for smaller motors.