HP estimate

[GTA_V6_Mustang]

IM just saying... WITH ONLY THE HEADS NO OTHER MODS 200rwhp is a good estimate. You guys think this thing is going to breath with a stock intake, air box, 4 cats and headers your couldn't suck a milkshake through.

thats true, with totally nothing else i can see that being it.

 

[legalize420]

270 here. heads had a valve job and were resurfaced. no port work. must be my cam. car also went 104.9 mph at 3400 lbs.

 

[BlackVert]

270 here. heads had a valve job and were resurfaced. no port work. must be my cam. car also went 104.9 mph at 3400 lbs.

cam ... sure, but you have a better intake too

 

[legalize420]

cam ... sure, but you have a better intake too

i know that. my post was more of response to the replys in the thread, not the original post.

 

[Dino Dino Bambino]

The 95' Cobra, with the GT-40 heads, has a bigger intake, throttle body, and cam then the HO motor, and it has 245hp at the crank. Logic alone is going to tell you that putting those heads on a stock HO motor is not going to yield 270rwhp. When people are talking about putting down 270rwhp, they are talking about doing it with late model Explorer GT-40p heads. Probably heads that have been worked over quite a bit.

Not necessarily Kurt. It's possible to get 260-270rwhp with unported GT40 heads but you'd also need the GT40 intake, 1.7 RR's, CAI, MAF, 65mm TB, pulleys, and headers-back exhaust. There are GT40P combos putting down around 280 and if those heads are ported, 300rwhp is possible.

 

[revhead347]

Not necessarily Kurt. It's possible to get 260-270rwhp with unported GT40 heads but you'd also need the GT40 intake, 1.7 RR's, CAI, MAF, 65mm TB, pulleys, and headers-back exhaust. There are GT40P combos putting down around 280 and if those heads are ported, 300rwhp is possible.

I'm saying it can't be done with a stock cam. You'd be pushing it without port work.

Kurt

 

[Gearbanger 101]

My old teal stang put down 224RWHP 298lb torque pretty much stock.

I'd like to see that.

 

[Dino Dino Bambino]

I'm saying it can't be done with a stock cam.

It can but much depends on the other supporting mods that have been added. I've seen several dyno sheets of GT40 head/intake combos putting down 270ish with the stock cam/1.7 RR's, and Tmoss' GT40P head/Explorer intake combo with stock cam advanced 4 degrees put down 277/330.

 

[final5-0]

I gotta tell you guys

Yes the p heads are better than the regular 40's
but
IMHO ... they ain't really all that much better

E7's ... 40's ... or p's .............
all those OEM iron heads have the same thing in common

It don't take a lot of effort to sink so much money in em

For just a bit more you could step up to Aluminum's
and
Have a way better chance of obtaining 300 or a bit more

I think the best bang for the buck is to run 40's or p's stock
then
If you wanna step up ... Sell em for what you paid for em

That is ... If you bought em right in the first place

anyway ... Sure you can do 270 rwhp with 40's or p's
especially
If we are talkin dyno results with a STD calibration

Grady

 

[GTA_V6_Mustang]

I'd like to see that.

Ok here you go

It was on the sticky that had everyones dyno charts but I see thats gone.

 

[Gearbanger 101]

Ok here you go

It was on the sticky that had everyones dyno charts but I see thats gone.

Not doubting the numbers.....I'd just like to know what "pretty much stock" means. Adding 30-35rwhp isn't exactly something that's accomplished with a K&N filter and an O/R H-pipe.

 

[GTA_V6_Mustang]

Not doubting the numbers.....I'd just like to know what "pretty much stock" means. Adding 30-35rwhp isn't exactly something that's accomplished with a K&N filter and an O/R H-pipe.

K&N drop in, Pypes catted X and underdrive pulleys thats it.

 

[Adam95GT]

K&N drop in, Pypes catted X and underdrive pulleys thats it.

Good numbers but i think it was reading a little high.

 

[GTA_V6_Mustang]

well i did have other 5.0's there with the same mods (foxes actually) and they didnt put down that much. Even the guy dynoing it said those were pretty high numbers for that car. Factory freak? Either way IDC anymore because I have the red one which makes 320RWHP but thats really not close to stock so w/e lol

 

[revhead347]

K&N drop in, Pypes catted X and underdrive pulleys thats it.

That's what I had on my 93' when I got 224rwhp. Except I didn't have cats. Dynoed it a few miles up the road at Outlaw Performance.

Kurt

 

[GTA_V6_Mustang]

That's what I had on my 93' when I got 224rwhp. Except I didn't have cats. Dynoed it a few miles up the road at Outlaw Performance.

Kurt

Yeah so there you go, lol