[shadow98gt]

I have a 98 gt and im putting on a PI intake, underdrive pulleys and a msd blaster coils packs with new wire and plugs. what Hp am i looking at at the rear wheel?

[Slowbra_12]

220-230 ish.. that's my guess...

[MustangMatt96GT]

Yeah I would guess 230-235. Do you have any exhaust differences or CAI? The reason being the intake flows more air than the NPI so if you can get more in air in there through a CAI such as a JLT and then get the air out of there quicker with some exhaust mods your numbers would be higher!
BTW I could be totaly off base, but I feel that those numbers are in your ballpark!

[Mustang1998GT]

My question for you all is that a stock 1998 Mustang GT stock with 225hp and 290ft/lbs so how would you get those numbers? I added a trick flow upper plenum and a flowmaster exhaust and get'n about 245hp! I would say you'd get about 250hp but I heard not to go with the PI shit because it highers compression and making it difficult supercharging or turbo. I would save up and get patriot heads for about 1,200 dollars and a Typhoon Intake Mainifold for 600 dollars. That would add at least 50hp if not more. I come to the conclusion that Ford shit is expensive though!

[Boomer]

Originally Posted by Mustang1998GT My question for you all is that a stock 1998 Mustang GT stock with 225hp and 290ft/lbs so how would you get those numbers? I added a trick flow upper plenum and a flowmaster exhaust and get'n about 245hp! I would say you'd get about 250hp but I heard not to go with the PI shit because it highers compression and making it difficult supercharging or turbo. I would save up and get patriot heads for about 1,200 dollars and a Typhoon Intake Mainifold for 600 dollars. That would add at least 50hp if not more. I come to the conclusion that Ford shit is expensive though!

I'll help you out a bit here, Patriot heads are just ported P.I heads and have a tarnished history for bad valve guides. The Typhoon intake well the name speaks for itself it blows.
245 huh ? That must be at the crank, I would like to see the dyno graph on that one. I not ragging on you by any means, I'm pointing out that the parts you listed are proven to be less than stellar and will not show a 50 rwhp gain.
The mods listed by shadow98gt may net a total of 225 tops, the MSD stuff will net limited power on a stock engine 1-2 rwhp on a good day.

[sonicblue]

yea you must be talking about crank hp. patriot has seemed to fix there past problems. i know several people who use them with no probs.

[Casper98GT]

I

have a 98 gt and im putting on a PI intake, underdrive pulleys and a msd blaster coils packs with new wire and plugs. what Hp am i looking at at the rear wheel?

230-235!! WRONG.

A 1998 will dyno right around 180-190 to the rear wheels stock. I was at 201 at the rear wheels with flows, CAI, and coil packs and wires. and 206 rwhp with a tune.

If You are stock with a PI intake, Underdrives, and wires and packs. I would say around 220ish. Maybe even less.

[G.T. Rags]

i think its funny how all these companies say up 12 horsepower when they barely push out 4. Horsepower starts to add up after a while, so a car with full exhuast, full intake, upper lower CAI. I'd like to see the motor that gains 12 horsepower by changing a filter. I'll put money on the fact that it's either got 400 ponies from the factory, or 10 grand dropped into her already. I know this one kid who told me he lost half a second with a cold air kit. Of course he also told me his mass air was a blower.

[shadow98gt]

alright so im looking around 220 rear wheel sounds good i do have money to do more but im going of to coolege this fall it all has to be saved unless something breaks...

[sonicblue]

most of these companies claims are bs and talking about crank hp. the only real way to find out is takl to people who have tried it and dynoed it

[Boomer]

Originally Posted by sonicblue most of these companies claims are bs and talking about crank hp. the only real way to find out is takl to people who have tried it and dynoed it

My point exactly, if you read it in a magazine cut a 3rd off what they claim. They pay to advertise, and if their parts do not show gains (which they always claim) how will they make money. I have been around and have seen the results alot of these parts really make. What most companies claim is usually a farse, I don't call parts a "performance part" if it only make 2 rwhp.

[nes]

Originally Posted by Mustang1998GT My question for you all is that a stock 1998 Mustang GT stock with 225hp and 290ft/lbs so how would you get those numbers? I added a trick flow upper plenum and a flowmaster exhaust and get'n about 245hp! I would say you'd get about 250hp but I heard not to go with the PI shit because it highers compression and making it difficult supercharging or turbo. I would save up and get patriot heads for about 1,200 dollars and a Typhoon Intake Mainifold for 600 dollars. That would add at least 50hp if not more. I come to the conclusion that Ford shit is expensive though!

actually boost likes compression, with more compression you can run a larger pulley and put down the same power numbers as a smaller pulley if not more power, but i wont get into that. patriot heads are shitty, so is the typhoon(my buddy had issues with both) and i would love to see a dyno graph of this 245 you speek of

[nes]

o0o i meant to say boost likes compression to an extent...

[Casper98GT]

actually boost likes compression

Now its youre turn for that face....

You explain to me why engine builders make engines low compression to run s/c and turbos. I will agree nitrous oxide likes higher compression. But not s/c or turbos. Youre looking at 10.4:1 compression with a PI swap...not good with 10psi of boost.

[sonicblue]

exactly what casper said. boost does not like compression. how many camaros do you see running big boost on a stock motor. thats why most of them use nitrous.

[Casper98GT]

exactly. most kits cme 6-8 psi TOPS. But gosh do those LS1's love the spray

[MustangMatt96GT]

What is the compresssion on those LS1's?

[Boomer]

I'm going to throw a curveball into here, in reference to the street on pump gas high compression is not good, (curveball) I have heard that Modular race engines like the high compression as well with race fuel.
I'm not arguing the fact that the reference was made in orientation to street use, it is correct that a street car will require lower compression in order to keep the ability to run pump gas and a sufficiant amount of timing.

Just adding my .02

[MustangMatt96GT]

Well with the higher octane gas you can run much higher compression!

[nes]

Originally Posted by Casper98GT actually boost likes compression Now its youre turn for that face.... You explain to me why engine builders make engines low compression to run s/c and turbos. I will agree nitrous oxide likes higher compression. But not s/c or turbos. Youre looking at 10.4:1 compression with a PI swap...not good with 10psi of boost.

thats y i put down my second post righ under saying to an extent...
but its very hard to explain boost+ compression= less lbs of boost but big horse power
boost + less compression = high boos numbers and huge power. as i said its pretty hard to explain, and im not the best person to explain "to the extent of what" i just know that in some cases boost is good . o0o and the pi swap wont ruin the chances of power adders for the future...