PJC Racing

You can look for them used because they are junk. Trick Flow has the best bang for the dollar with alot of room to grow.

TopNotch89

Hey guys, ive already got my heads, gt40's off a 96 explorer. im just wondering how much of a performance increase am i going to get out of the gt40's as opposed to the E7's. ive heard lots of good things about them for a budget build. i dont have a ton of money to buy alum. heads. i got em for good money and im happy. i just want to know how much of a HP increase im going to get. should i look into a port and polish?

mjr46

you'll get some but it won't be earth shattering ^^^^^^^

minnow81469

I would and get them planned down do increase compression so its all done at once they have to tear them apart anyways get it done at once

hypersurf1

I kicked this around forever but decided that for the labor involved to do the heads i was gonna do it right. For the extra 4 hundred bucks over the patriot or gt40x heads im going with the afr165's which will trounce on them. Heads are the biggest horsepower maker, dont skimp out there.

TopNotch89

yea well i figured it wouldnt be like OUTRAGEOUS amounts of HP id gain from them :P but i figured id ask, i heard they outflow the stock E7's by a good amount. this is my first project car so im going light with the budget for now, well see what next year brings

PJC Racing

Trick Flow would still be a better option and cheaper, IMO

hypersurf1

How are the TF better? I have read a ton of articles and havent seen any where the TF put out more power then the AFR. If they are better I would go with them, please let me know the difference. Thanks.

PJC Racing

There's the problem, you have a ton of articles. Advertisment money goes a long way and dynos can be manipulated to show what you want. I am partial to experience (e.t.) and cost. I have seen better results from people using Trick Flow, period. Sorry but I don't see any justification for an AFR 165 to be $150-$300 (depending on where you get them) compaired to the Trick Flow's.

PJC Racing

Besides what were the part numbers being compaired? What model of heads? I bet alot of the tests are compairing an AFR 185 or bigger to a standard OTB Twist Wedge (170cc). Don't always believe the hype, magazines get money to sell parts.