most powerful street NA 4V?

[steedastangt]

I met a guy last night that has a mach. He told me the heads are ported to the max along with the intake, has stage 4 crowers, built bottom end, and all the bolt on you can get. He also has a huge shot of nitrous on it (2 stages/ 250 each ). He told me it put down 576 hp on just engine. I have never heard of a 4v doing this without a power adder of some kind. Anyone else heard of numbers this high? I dont htink he would lie. I just dont keep up with the 4v to much.......

 

[CobraRed_96_GT]

576 is stretching it for a fully built LS1, i doubt he's making that at the crank. Maybe 390rwhp or so.
He literally saying that from a H/C/I swap he went from proly 288, and added another 288 to the ground

 

[fobra559]

 

[04GTMustang]

i could see him doing that if he swapped some other bigger motor in there but not a 4.6. i would say upper 300s would be right for a fully build all motor 4v.

 

[whyask]

yA there is NO WAY, i had stage 2 heads stage 1 cams with a 50 shot and I was barley at 358 with forged crank!! Id call him on it in front of all his friends !

 

[DBMSTNG]

stage 4 lol!

 

[CobraRed_96_GT]

stage 4 lol!

there are stage 4 cams

 

[blackfang]

What a bunch of horseshiot!!

 

[DBMSTNG]

there are stage 4 cams

well what do ya know? there is. my bad.

 

[steedastangt]

He is the owner of a local speed shop. I have seen pics of it with the front wheels well off the ground so i know it has some power but like you guess have said it is more than i thought was possible short of using nitro for fuel.

The engine is fully built. I dont know what the CR is or how many cubes it is. I think it would be possible but extremely expensive. I will see if anyone local can confirm. If so i will let ya'll know.

 

[Crzyhrse]

Stage 4 cams, Stage 4 heads, Stage 4 Intake, Stage 4 internals, I can believe it.

 

[02LaserRed2V]

576 all motor, my @ss.

 

[BennyBlown2v]

It's not outa the question if its a bbs 5.4l... but I don't know of anyone running one of those. There are NA 4v's in the 450+ range, just nobody who posts here lol...

 

[Gearbanger 101]

576rwhp running his nitrous maybe...but not without it!

 

[blackfang]

It's not outa the question if its a bbs 5.4l... but I don't know of anyone running one of those. There are NA 4v's in the 450+ range, just nobody who posts here lol...

I agree, there are some 450+ rwhp na 4V's, Nazman comes to mind. However 576 NA, not seeing it. N2O yes.

 

[mineralgraygt]

i know al papitos car is making like 600hp all motor. well that what it said in the magainze so im sure it possible.

 

[blackfang]

i know al papitos car is making like 600hp all motor. well that what it said in the magainze so im sure it possible.

That is a fully built race motor. 5.4 DOHC with a carbed intake, Worked Ford GT heads, belt driven distributor, etc. Definately not your average bolt on or big bore motor.

 

[CatmanJJ]

If that's the case I'd say my car has around 380 hp.

 

[Nazman]

LOL!

I know the car in question. Not making that kind of power all motor.

My last combo (128+MPH All Motor) was making a tad over 500RW all motor. With 322CI, 03-Up Cobra heads, fairly large cams, Sulllivan intake, mild CR @ ~10.8:1...etc.

My current combo will out power that by far (see sig).....stay put!

Naz

 

[slayr281]

It's possible, but not all that likely.