gt-40 irons

[302fordracer]

I just bought a set of gt-40 irons from Randy (thanks randy they just got here and look good) I was wondering how much horsepower would you all guess I would gain from installing these heads with the stock cam?? I would say they are mildly to mediumly (spelling lol) ported..my other mods and dyno numbers are in the sig...can I get 25-30 rwhp? I am just starting college and it will be a lot longer wait time to save up for the cam and install and I am not sure I want a cam anyway it being a dd...I mean it could be 6 months wait if I want to get a cam whereas without the cam I could prolly install next month...so just wondering can I get 25-30 rwhp from the heads on stock cam? that would put me at 265-270 which I would certainly be pleased with...

 

[18mustangs]

Brian, I'm not sure on the horsepower gain, but you'll definitely want a cam for the dd. I run a B cam in my daily driver and have no issues with driveability. As long as you don't get too radical with the cam you'll be happy. I recommend the TFS stage 1, it makes great power and is pretty driveable.
--Tim

 

[stangbanger94]

E-303

I'd recommend an e-303. It's not as rough as a b-cam, it's emissions legal, and it works well with a power adder. I know there are way better cams to buy, but for an "out of the box" cam, e-303 is the way to go. I hit 12.7's N/A with an e cam and gt40p's, and a stout bottom end. The cam made my car run what it did basically.

 

[RIO5.0]

You already have the intake and exhaust, my guess would be 25 anyway...
I got 25 from my Thumpers with stock cam/Tmoss ported lower...
If you dont wanna get into the cam...then dont....you may or may not get gremlims....odds are you'll get some nasty little habit....
Bet you'll be quite surprised how those heads will work just as it sits...

 

[302fordracer]

the only thing is as I said I get a bonus next month which I could use towards rockers, gaskets, bolts and install of the heads...but if I get a cam I have to add an extra 150 or so for the cam and 200 for the tune so I would have to wait an additional two or three months to do anything...on a tight budget starting college and all...not to mention my clutch is on it's last 10k miles...maybe less

 

[302fordracer]

So I guess my goal is maybe 13.3 quarter miles and 270 rwhp...I have 240 now...can the heads on stock cam get me the rest of the way??