thoughts on a 347 with GT40P heads and GT40 intake.
- Thread starter MarSaleenMustan
- Start date
$150 for the upper + the lower + porting + gaskets and the RPM is still cheaper and better for the application. I'd be more conserned with a cam choice rather than an intake choice. What you should do is try and get a 'carb' sticker for an E cam but use a good custom grind cam and lie to the inspector and say its an E cam 
Do you know anyone that can do "under the table" inspections?
Do you know anyone that can do "under the table" inspections?
why not get your 302 bored out to a 306, then some nice heads/cam/intake? that would work better than a 347 with low flow products.
Grn92LX said:$150 for the upper + the lower + porting + gaskets and the RPM is still cheaper and better for the application. I'd be more conserned with a cam choice rather than an intake choice. What you should do is try and get a 'carb' sticker for an E cam but use a good custom grind cam and lie to the inspector and say its an E cam
the $150 was for both upper and lower, now more or less how much would the porting be?, and again more importantly would a ported Cobra flow the same or better than the RPM?, ideally i'd like to keep it as "Ford" as I can and if it ends up being more or less the same price but i can have an equally/better flowing "Ford" intake i'd take that instead. I know ultimately the RPM would outflow the Cobra intake but again, i'm not looking for 500+ HP, so it wouldnt really matter with this motor. As far as a cam, I do know an "under the table" inspector/smog tech
, it'd be nice if I could get it to pass emissions but it doesnt HAVE to.The RPM will crush the cobra on this given set up your planning. I know your not planning 500hp, thats why I didnt recommend a ported victor and afr 225's 
To port the lower cobra is gonna cost about $150. But your making it harder and harder to acheive your goals. Just spend a little extra and use an RPM or even consider a trickflow track heat which is about $100 less than an RPM. Stick a 75mm tb on it as well.
To port the lower cobra is gonna cost about $150. But your making it harder and harder to acheive your goals. Just spend a little extra and use an RPM or even consider a trickflow track heat which is about $100 less than an RPM. Stick a 75mm tb on it as well.because it'd be NA for a while and I feel i'd get a bit more HP out of the 347 than the 306. I know the 347 stroker would be a bit more due to me having to get the crank and rods, but i'd want to get forged rods too so i might as well spend a couple hundred more and increase displacement 41CI by going with the stroker.N8Miller said:
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