FourG63 97GST

iTrader: (1)

99 Bird, 232/234, supporting mods, cutout
SRT4, Bolt ons, E85, stock turbo

Raoul-Duke

iTrader: (6)

How much boost is that skittle running? Thought you'd have him.

FourG63 97GST

iTrader: (1)

not sure, the stock turbo dont hold boost that well. they usually spike 20-22, but then settle around 17-20 by redline

Raoul-Duke

iTrader: (6)

Thats what I would have said too. With you being cammed I'm surprised he ran that hard. Either way good run.

Havoc40

My full bolt on, stock turbo 05 SRT would spike 24-26 and hold 20-22 to redline with an adj. wastegate. Then I let Buscher do the head, HKS cams, RC injectors, extrude honed intake, twin disc clutch, DSS axles, and a GT35R. The thing was practically useless on the street. Had more fun with the stock turbo. Beat plenty of bolt on, cam only Camaros and T/As with the stock turbo though.

Raoul-Duke

iTrader: (6)

Reason I asked was because I raced my buddies stage 2, stock turbo, srt4(Spiking somewhere like 20-23psi) back in 2008.

It was a good race but I beat em every time. OP is cammed, I figured he'd have him but anything can happen.

blackls1ta00

iTrader: (27)

Is that bird tuned with that cam? **** you shud smoke him with ease bro

OVA1

iTrader: (12)

That's my question too… Those little dudes are quick, but we put 'em away down here on cammed/headers and 4.10s. My guess is the cam didn't get the follow-up. OR… Maybe the Bird has the dreaded high gearing in the rear end. Didn''t some of them have something like 2.8x, or something like that?

But even then, one would expect he'd have done better up top.

How'd we do?

FourG63 97GST

iTrader: (1)

The bird is tuned 3:42s, LS6 intake, lid, aluminum driveshaft. it is what it is

badformulaLS1

iTrader: (1)

Ouch. Sometimes my faith in f-bodies is really challenged lol.

adamantium

iTrader: (3)

Is that that black firehawk? I think i know who it is, i have him on youtube that thing traps like low 110s. Thing is really slow for the mods.

Cwarta

iTrader: (12)

Local Bolton only srt4 was running 12.3s all day in 3,000da. Not bad!

adamantium

iTrader: (3)

E85 ones ride!

LightningTeg

E85 is monayyy

Cwarta

iTrader: (12)

This is my old motor, the one in my sig vs a full Bolton/tuned/2800# with driver srt4.

I spun like a biatch. Street tires ftl


http://youtu.be/peU3qCrxKu8
Also Adam, did I tell you it's H/C/forged LS3 with a 150 shot in about a week for the Gto

adamantium

iTrader: (3)

Damn dude sick! i remember your thread about over boring the iron 5.3 you scraped that?

Cwarta

iTrader: (12)

Was going to be $800 in machine work, my machinist offered me this lq9 block for $300 and couldn't pass it up. Now I'm doing a forged piston 376 with the lq9

PaSteLaSo4U

iTrader: (-2)

that srt4 runs damn good, the owner its a good friend of mine and that thing is one of the fastest stock turbo srt4s, it ran 12.0@116..

srt4e85

is your redline at 5000rpms? because a stock turbo will not hold 20 to 6000rpms unless you are running an external wastegate with a heavy spring (15 psi) but internal wastegate will never hold 20 unless you spike the turbo to 30 psi which is not healthy for the turbo and motor.

is you don't believe me then take a datalog via dsp and you will be surprised that you are nowhere near 20.

Highest psi at 6000rpms internal wg was around 17 psi.(datalogs only) no boost gauge readings.

Theres a thread on srt forums where people provided datalogs and out of 200+ datalogs , only one held 17 psi. 99% held 14-15 psi.

Now if you convert into a external wastegate and have a 15 psi+ spring in the wastegate then you can hold around 20 with a decent spike.I have datalogs of a stock turbo external wastegate spiking and holding 28 psi.tuned by mindmelt.(20 psi spring)

Another one was by a guy named 707 who held 24 psi on stock turbo with a 28 psi spike.Also external wastegate(15 psi spring)

holding 20 psi to redline is not helping at all.
Don't look at dyno numbers, look at trap speeds.

Fastest srt4 stock turbo e85 trap is over 119 mph, internal wastegate 25 psi spike and 16 hold. E.T-11.83

Second one stock turbo 110 oct internal wastegate 25 spike 14 hold went 11.6 with a trap speed of 118.which is our fastest stock turbo srt4 in the world as of right now

Now we have a stock turbo external wastegate e85 spiking 24 and holding 20 psi trapping 117.8.

Trap speed will tell you if you are making power or not Porting the exhaust manifold minght help a lil but I just showed you that holding more psi to redline is not giving you a better top end.Dyno numbers don't mean anything.some mustang dynos read low, some don't..