421 help? need more power
Well after 4 years of looking here for help during my ground up assembly on my 67 and getting ideas that made me spend more than planned, from mini tubbing to 4 link I just signed up and was hoping for a few ideas on what my motor is missing, my guess is the heads, I know there are more than a few good running engines on here so any ideas would be greatly appreciated. I want to know what some of you would do to get the most out of this big inch small block for a bad street engine? The engine runs great and does go really strong just want more.
I also run this through Richmond 5 speed (non overdrive) with 3.28 1st gear to ford 9 inch with 3.50 gear
Here is what I have
dart shp block,
vic jr intake,
scat 3.875 crank,
I-beam 6 inch rods,
12cc dish pistons, close to 11:1 comp (96 octane)
heads are 64cc vic jr, 215, w/ 2.08 int., 1.65
Howards hyd. roller
Basic Operating RPM Range: 2,800-6,400
Intake Duration at 050 inch Lift: 247
Exhaust Duration at 050 inch Lift: 253
Duration at 050 inch Lift: 247 int./253 exh.
Advertised Intake Duration: 300
Advertised Exhaust Duration: 306
Advertised Duration: 300 int./306 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.565 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.580 in.
Valve Lift with Factory Rocker Arm Ratio: 0.562 int./0.580 exh.
Lobe Separation (degrees): 110
I want to know what some of you would do to get the most out of this big inch small block? I plan on doing something this winter just not sure what, would having these heads ported be a waste of money or should I look to some afr heads? maybe my cam choice sucks for this combo? just not sure