Need Help

[Edbert]

300fwhp from a carb'ed 302 is childs play. Port your factory heads, add larger valves, get a 270H cam, a good aluminum manifold, headers and a 650 vac-sec and you should be just about there.

 

[66Dave]

300fwhp from a carb'ed 302 is childs play. Port your factory heads, add larger valves, get a 270H cam, a good aluminum manifold, headers and a 650 vac-sec and you should be just about there.

yes but he wants 300Rwhp. so figure he needs to come up with another 50 hp or so to cover the drivetrain loss.

 

[DarkoStoj]

i have brand new not rebuilt GT40p heads for sale, and used world windsor sr heads for sale. PM me if interested

 

[streetdemon70]

ok im thinking about afr 185's, victor jr intake, holley 650, 270h cam. what do yall think, good enough to get me to 300RWHP.

 

[Edbert]

Are you talking about hitting 300hp at the wheels? If so what transmission and rear end are you running? I ask because you may need to get over 350fwhp for that and at that point you are in danger of breaking stuff unless you baby it.

ok im thinking about afr 185's, victor jr intake, holley 650, 270h cam. what do yall think, good enough to get me to 300RWHP.

I think the 185s are too big for that combo. Stroke it to 347, swap in a 750 and a 280H and you'd be in the 185's range. Mixture velocity will just be too low for those big heads IMHO.

 

[bnickel]

ok im thinking about afr 185's, victor jr intake, holley 650, 270h cam. what do yall think, good enough to get me to 300RWHP.

the vic jr is way overkill for the rest of the combo you have listed. i'd go performer RPM or RPM air gap or a weiand stealth. also the 650 holley is probably about right if you go double pumper but i would only run that if you have a standard trans if you have an auto i'd go with a 700 vac secondary. you stated you were going to go with a roller cam but the 270h is a hydraulic flat tappet and i don't think you'll get your 300 RWHP number with that cam.

personally, i would go with the recommendation that rbohm gave you and the carb's i mentioned above. that should get you right where you want to be with a good tune