I'm getting some new heads for the 5.0 stang. Can anyone tell me how aluminum GT-40 "turbo swirl" Y303's are? SPECS: 64cc chamber, 1.94 intake-1.54 exhaust. Horsepower gains from a stock block? Pedistal are the way to go from the info I've scrounged up. anything I would need to modify to get them working of just bolt on? (milling or alterations) Are they worth the $700 a set or should I invest the money on a diff. set of heads(budget in mind) Also planning on putting a turbo on in the near future, if thats makes any difference. Any info you guys can provide will be grreatly appreciated, Adam[&:]

 

any input on the Thumper ported E7's, I've heard that it is great for the price.

 

Someone posted this site a week ago. Shows flow #s for alot of ford heads and you can compare 2 at a time.

http://www.allfordmustangs.com/Detailed/630.shtml

 

awesome link, thanks.

 

to really see the power gain from an aftermarket set of heads you will need a new upper and lower intake.

 

what do you suggest, the gt40 intake and plenum