Dart Pro-1 230 SBC Heads
I'm currently running out-of-the-box, cast runner Pro-1 230 heads on my 427 SBC stroker race engine (solid-roller .700 lift, 14.5-1 compression, 2-2 1/4" step-tube Stahl headers, 1000 CFM 4150 Demon carb and Hurricane intake that I port-matched).
Using one of the on-line drag race calculators (i.e., car weight, ET and MPH), the engine is making 700+ HP at the crank. Basically, the engine is running really great and making a lot of HP (9.0s @ 150 MPH in my tube chassis car).
I've been thinking about having the Pro-1s professionally ported during the off-season to gain a few more HP. Also, adding one of the Super-Victor #2825 CNC'ed intakes, along with some additional port-matching.
Some of my race firends say, "they wouldn't change anything on the engine, because it is running so good as-is!" But, I would like to have the car running down in the 8.80 to 8.90 range and "I believe" the porting would help me move closer to those times.
So, what are your thoughts on having the Pro-1s ported and how much do you think the porting along with a CNC Victor would drop my ETs?