what would be your formula?

[Arboc]

13/14 GT500
Non ported factory TVS
Assume 590/600 stock whp

I feel I have the right formula (parts combo) to make about 725 whp.

What do you think it would take to make 725 whp?

:)

[Stephen06GT]

What is "A 150 shot of laughing gas?". :mechanic:;)

[Arboc]

fair, next!

[ZR]

Issue is, on a typical hottish summer day it could fall closer to 560, only seeing closer to 600 on a low temp spring or fall pull. I'd think a pulley and tune will see 650 range in good weather and closer to 620 in real world summer temps n humidity. Add a set of long tubes and it'll jump closer to your target.
Worth noting, making big boost pulls on the road courses can and will make it a prick to keep cool.
I know the Cobra is even harder to keep cool n pull the 17lb pulley off n drop back to a very soft / low timing 13lb lapping tune.

[TheMustangShow]

I personally don't think that number is attainable without a new blower or a Shot, but if you lower you expectations to 700, you can get there with.

CJ Dual 65mm TB

A BIG Intake (JLT or the FR Cobra Jet One)

10% OD Balancer (or a 2.4 Pulley and Idler Combo)

...and a TUNE.

You'll need cooler plugs, new belt and maybe more fuel, I'm not sure what the 13/14 GT500 fuel system tap out at.

[Kirk]

A sVTEC sticker like on Ash's car :P

[Speedtospare]

Full Stainless works exhaust, TVS @ 22 PSI, Big CAI, TB, Tune. Meth injection would do wonder with that setup. Maybe throw some Lethal custom cams in there just for the idle

[TheMustangShow]

Full Stainless works exhaust, TVS @ 22 PSI, Big CAI, TB, Tune. Meth injection would do wonder with that setup. Maybe throw some Lethal custom cams in there just for the idle

OP goes way OVER 725 with those Lethal Cams and SW Headers and Exhaust, probably would be a tad over 750rwhp, may have an emissions issue with that Cam and Full Exhaust system though.

That said, OP asked how to get to 725, so I inferred there is some kind of budget, as if you have the dough and desire, a 900 rwhp GT500 is no big deal, all it takes is $$$, a mouse and some clicks.

[Cobra]

Mono blade Tbody
10% od balancer
Kooks headers and magna flow exhaust
custom Tune
Kick some ass

You won't need cams, I just installed the 2013 cams in mine

[Speedtospare]

Another board member has the same.mods as above and makes 755 who at only 17 psi.

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[TheMustangShow]

Another board member has the same.mods as above and makes 755 who at only 17 psi.

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On a 2013?

[Speedtospare]

In an 07 5.4., not even an 08. My guess is Kevin's car would push close to 800.

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[TheMustangShow]

In an 07 5.4., not even an 08. My guess is Kevin's car would push close to 800.

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What Blower?

What are they doing for fuel...

[Speedtospare]

TVS. Has 2014 injectors. Not sure on fuel pump.

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[TheMustangShow]

TVS. Has 2014 injectors. Not sure on fuel pump.

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Be interesting to know whether Boost-a-pumps or higher cap pumps, I recall some rebuild threads of big number cars blowing up.

No point in making big power and pushing tunes to the limit, if the car becomes a timebomb.

I've got a 2.4 and some 13 injectors to install, but won't turn the wick up that much on the tune, I'll probably see 680-690 at the tire.

[Speedtospare]

Agreed. Will find put what pumps he's running

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[Arboc]

well. Here is the combo, being installed and tuned in the next month or so.

VMP 2.4 blower pulley
VMP 90mm idler
Gates blue blower belt
Gates blue accessory drive belt
FRPP twin 65mm TB
JLT 127mm intake
ARH 1-7/8" LTs
ARH 3" catted h-pipe
3.73 gears
and a few other odds and ends.

car currenlty makes 630 rwhp at Steeda, 615 rwhp at DaSilva's (only engine performance enhancing mod is FRPP resonator delete)

after the above is installed, a safe tune will be done by Deigo

The future may hold L&M or Leathal cams, low vacuum bypass diaphragm, 1000 cc injectors and KB BAP

[Ray721]

Coyote swap...[emoji12]

[Arboc]

pffff

LSx swap

or LTx or next gen GM small block LUx

[Arboc]

pffff pffff

5.2 GT350 swap + LTs + KB blower

Done.

[Tailites]

lose the blower...belts are for holding up little boys pants

big single turbo FTW!

[ZR]

Your gonna love it Kevin.

[Arboc]

lose the blower...belts are for holding up little boys pants

big single turbo FTW!

thank you, but no need for a BIG turbo on this ride, just buliding a fun toy, for multi use, cruise, drag and lapping days.

[Arboc]

Your gonna love it Kevin.

thanks Rick, its finally coming together. After these mods, the only other performance mod is cams and supporting mods. after that, maybe a SS hood and then just service parts, tires, brakes, clutches, etc.

:)

[Laffs]

Buddies 13 car went on the rollers at Lideos to the tune of 730whp

Mods are 2mm smaller upper pulley, 10 % lower overdrive pulley swap with innovators west pulley, Ford racing twin 65 mm throttle body, JLT Big Air CAI and custom SCT tune.

[OldSchool]

May I just be the voice of caution.
Be careful on whom you get to dyno tune this. Being this close on the edge.

Many won't stand behind you or their work. They Aren't properly insurance, and just aren't professional when it comes to accountability, or care for your investment like you do.
Ask the questions, what if it blows up? who will they blame? DO NOT leave your car unattended with them......ask me how I know this.
Good luck on your quest, your car is a monster, I'm loving it.

[stangstevers]

86 LX Coupe, Beefy Cobra IRS... Coil overs, lots of brakes and other suspension upgrades, cage, etc...

Ford Racing coyote + 20psi of boost and a $10,000 fine, tow, suspension for going 250 in a 100... :D

[toofast306]

What's the consensus on meth injection, pre or post blower?
I thought it was supposed to be the greatest thing since BB turbos, but it doesn't seem like the GT500 kids are playing with it.

[Tailites]

What's the consensus on meth injection, pre or post blower?
I thought it was supposed to be the greatest thing since BB turbos, but it doesn't seem like the GT500 kids are playing with it.

they likely dont understand what water/meth is all about...however

if they DO understand it & the benefits & arent using it...then theyve dropped the ball imo

Im using it...trust me...its da bomb!

[toofast306]

Post-turbo?
Not intending to hi-jack the thread, but I know of advantages/disadvantages for pre-turbo applications.
I also think there are only advantages for a PD blower application, in theory.
Arboc could cool the charge and ensure better sealing, presumably without the meth falling out of suspension.

[Lips]

Either way you go about getting the power...i think you're gunna need more tire lol. that car will be a beast! i can't wait to see the next dyno sheets.

Oh and i vote for nitrous, lots and lots of nitrous.

[Speedtospare]

He's afraid to drag the Modfox. He really doesn't want mods. All purchases are made in fear. But seriously, its going to be a beast

[Lips]

he's not afriad of the mod fox....just the driver of the modfox lol

[Arboc]

So with these mods:

VMP 2.4 blower pulley
VMP 90mm idler
Gates blue blower belt
Gates blue accessory drive belt
Steeda adjustable tensioner
FRPP twin 65mm TB
JLT 127mm intake
ARH 1-7/8" LTs
ARH 3" catted h-pipe
3.73 gears

Tune by DCT

She made 710rwhp

[r-model]

Do I hear an upgrade to a Whipple???????

[ZR]

Still making a big pile of jam mr.

[Arboc]

Do I hear an upgrade to a Whipple???????

nope. never.

If I do change out the TVS, it will be for a KB

[Ray721]

nope. never.

If I do change out the TVS, it will be for a KB

Mammoth 4.0 [emoji1]

[Speedtospare]

LOL 710 whp, few extra parts on the way and the blower is still only running at 80%. Motor cant take the blower at the full 22 PSI though.

[Arboc]

Buddies 13 car went on the rollers at Lideos to the tune of 730whp

Mods are 2mm smaller upper pulley, 10 % lower overdrive pulley swap with innovators west pulley, Ford racing twin 65 mm throttle body, JLT Big Air CAI and custom SCT tune.

730rwhp thru OEM cast iron manifolds?

[Arboc]

Mammoth 4.0 [emoji1]


LOL 710 whp, few extra parts on the way and the blower is still only running at 80%. Motor cant take the blower at the full 22 PSI though.

holy fcuk. its not about "maximums"

no to a 4.x anything. A 2.8 or 3.2 KB, lower boost so its easier on the engine and make 750rwhp - perfect.

[Arboc]

I'm just building a fun toy (cruise/road trip/road course/drag) that runs 0.001 seconds faster in the quarter than a ModFox ;)