300 rwhp, n/a, stock heads

[Rusman]

Ok, here's a thread for you to think on :).
In my ever strive to be different than everyone else, I've come up with this: 300 NA rwhp utilizing the stock heads.

I assume I'll need LT, ProM77, aftermarket cam, ported heads and intake. I have another Cobra intake I was going to get ported for aluminum heads, but everyone has aluminum heads :). So, does anyone know how much porting I'll need to get done on the intake/heads? Can I go with larger valves in the GT40's? Will I have spent so much money by the time I'm done that I'll wish I just went with an Ed Curtis AFR setup?

[HoustonLX]

300 rwhp with stock heads and intake is gonna be tough. Would probably take a great port job of both and alot of milling to up the compression. Even then its not very easy. I would go the Ed Curtis route. Wouls probably end up costing the same, have much more room to grow, and be easier to sell if you ever decide to.

[Severisth]

Here are some numbers for you to work with. These are "Thumper460" ported stock heads:
.400 192/145
.500 219/151
.600 224/154

Powerhead ported stock heads:
.100 64.2/63.0
.200 123.4/110
.300 175.8/151.6
.400 204.3/170.2
.500 217.2/175.5

[Severisth]

btw those heads are between $595 and $695.