High comp 4V

SWEET2KSTANG · January 18th, 2008, 03:19 PM

me and doc are going to do his. i am figuring we will se around the 430-450rwhp mark when we get done.

Goblin · January 18th, 2008, 03:34 PM

Originally Posted by ModMustang97GT

You can run in to the 12.5:1 with no issue if its tuned right. And you can run even higher if you are willing to use some Octane Booster in your fuel. Which if you figure it can add a couple points of octane for a few dollars every tank, its pretty worth it for that compression. Ported 4V heads, according to the equation on MM&FF are good to 600HP if I remember correctly. If you get the right parts, and design the system right witha good custom cam, I think you could be at 550 RWHP with some work. I think that it is deffinitely possible, as long as your willing to get it up to 7000-7500 rpm.

Definately going to need to spin it higher than 7500rpm to get 500+rwhp. 430-450rwhp is more attainable, with less rpm at that.

550rwhp out of an N/A 4.6? I dont see it happening.

03 R Code · January 18th, 2008, 03:50 PM

A guy here in town (actually he owns a shop called the hot rod store of TX) has a n/a Mach with 590rwhp, and a 2 stage N20 shot on top of that. I am having him do some work on my car soon, and I'll be able to bs with him about what all is done with his ride. It's killer to hear at idle too! I'm not sure if it's the stock displacement though....

Goblin · January 18th, 2008, 04:06 PM

At 590rwhp.. i would say its a super healthy 5.4. If its a 4.6, i wanna see that thing! 590rwhp is in the 680-700bhp range.. that would be one sick 4.6.

Doc8224 · January 19th, 2008, 02:03 AM

500hp on a 4v 4.6 is not that hard to beileve. It would be around the limit I would think for it but its not that crazy. Like sweet said, I am shooting for 450rwhp on my mach, and I will be running a 150 shot on top of that. I think we will hit it fairly easy with the build up we are planning. I have seen alot of n/a mach's hitting 400+ so I have full confidence in 450.

Justin00Stang · January 23rd, 2008, 09:39 AM

Mach1s are already over 10:1 from the factory, and take very little timing at high RPM, around 18-22* max when NA.

I've seen some 4.6 mod motors that have been prepped for certain all out race classes make 350ish RWHP when NA.

acmillr · January 23rd, 2008, 10:12 AM

Originally Posted by Justin00Stang

I've seen some 4.6 mod motors that have been prepped for certain all out race classes make 350ish RWHP when NA.

I make that on a 2V with all accessories in place on my DD.

weems · January 23rd, 2008, 10:22 AM

Originally Posted by acmillr

I make that on a 2V with all accessories in place on my DD.

lies

Smoothgrandmama · January 23rd, 2008, 10:56 AM

I Wanna See 380 Hp Before 3500 Rpms That Would Make Me Drool. . . Im Really Not A Fan Of Peak Hp

acmillr · January 23rd, 2008, 01:15 PM

Originally Posted by Smoothgrandmama

I Wanna See 380 Hp Before 3500 Rpms That Would Make Me Drool. . . Im Really Not A Fan Of Peak Hp

Damn, you don't ask for much do you??

Smoothgrandmama · January 23rd, 2008, 01:29 PM

I Have A Dream . . . . . .

01LaserRedCobra · January 23rd, 2008, 03:33 PM

Couldn't you use the snow methanol injection... I thought I read that boosts octane of the gas if you really wanted to run even higher compression. Not sure if that is a stupid comment but hey.

mustangmanic · January 23rd, 2008, 03:42 PM

Originally Posted by acmillr

OK guys- let's get crackin' with the 4V BS.

Have any of you built a high compression NA 4V? I am looking to do a 4V for this years project. What are the thoughts on max HP output from a NA 4V?

switchin sides are we now.... hmm

lol jk

acmillr · January 23rd, 2008, 03:45 PM

Originally Posted by mustangmanic

switchin sides are we now.... hmm lol jk

Switch hitter........

Smoothgrandmama · January 23rd, 2008, 04:05 PM

Me Too! Execpt Your A Purist. . . . One Of Mine Is Supercharged. Although There Are Rumors That Yours Is On The Juice!

Doc8224 · January 23rd, 2008, 04:11 PM

Originally Posted by Justin00Stang

Mach1s are already over 10:1 from the factory, and take very little timing at high RPM, around 18-22* max when NA.

I've seen some 4.6 mod motors that have been prepped for certain all out race classes make 350ish RWHP when NA.

350rwhp with a 4v car is like not even all the bolt ons. LOL If I had a full race prepped 4v N/A car It better be freakin hitting closer to 550rwhp.

06RedfireGT · January 23rd, 2008, 07:33 PM

BBR hit 400rwhp on a 3V maxing out the stock injectors. I have no doubt a 4V could hit 460-475

Goblin · January 24th, 2008, 11:05 AM

The day i see a stock bore, stock stroke N/A 281ci 4v lay down 590rwhp.. or even 550... I'll give up pushrods in favor of OHC again.

Smoothgrandmama · January 24th, 2008, 11:19 AM

Give Me 5k And Half Of Ac's Brain And Ill Do It!

Goblin · January 24th, 2008, 12:01 PM

Going to take alot more than 5k!

January 18th, 2008, 03:19 PM	#21
SWEET2KSTANG MM Fanatic 2000 mustang gt 12.01@114.69 Join Date: Oct 2006 Location: N.W. AR Posts: 4,431	me and doc are going to do his. i am figuring we will se around the 430-450rwhp mark when we get done. __________________ stock long block, bolt ons, slicks, and a little squeeze 1/4 E.T. 12.06@114.69 Only two defining forces have ever offered to die for you: 1. Jesus Christ 2. The American G. I. One died for your soul, the other for your freedom.

January 18th, 2008, 03:50 PM	#23
03 R Code Hardcore Enthusiast unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 2,870	A guy here in town (actually he owns a shop called the hot rod store of TX) has a n/a Mach with 590rwhp, and a 2 stage N20 shot on top of that. I am having him do some work on my car soon, and I'll be able to bs with him about what all is done with his ride. It's killer to hear at idle too! I'm not sure if it's the stock displacement though.... __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

January 18th, 2008, 04:06 PM	#24
Goblin Hardcore Enthusiast Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 1,990	At 590rwhp.. i would say its a super healthy 5.4. If its a 4.6, i wanna see that thing! 590rwhp is in the 680-700bhp range.. that would be one sick 4.6. __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

January 23rd, 2008, 09:39 AM	#26
Justin00Stang Regular Join Date: Sep 2006 Posts: 108	Mach1s are already over 10:1 from the factory, and take very little timing at high RPM, around 18-22* max when NA. I've seen some 4.6 mod motors that have been prepped for certain all out race classes make 350ish RWHP when NA. __________________ Justin Starkey - VMP Tuning Dynojet Mobile Dyno & SCT Tuning 07 Shelby GT500 697RWHP/702RWTQ TVS blower 00 Mustang V6 A4 TT 450RWHP/475RWTQ 10.9@127 17psi stock 3.8 06 Mustang V6 M5 Vortech 15psi 395RWHP/375RWTQ wife's 06 F250 14.3@93

January 23rd, 2008, 10:56 AM	#29
Smoothgrandmama Editor Join Date: Apr 2007 Location: Willis,Texas Posts: 2,111	I Wanna See 380 Hp Before 3500 Rpms That Would Make Me Drool. . . Im Really Not A Fan Of Peak Hp __________________ "The issue of Prayer is not prayer itself, The issue of Prayer is God"

January 23rd, 2008, 01:29 PM	#31
Smoothgrandmama Editor Join Date: Apr 2007 Location: Willis,Texas Posts: 2,111	I Have A Dream . . . . . . __________________ "The issue of Prayer is not prayer itself, The issue of Prayer is God"

January 23rd, 2008, 03:33 PM	#32
01LaserRedCobra Regular 2001 Mustang Cobra Unknown Join Date: Dec 2007 Location: Fuquay-Varina NC Posts: 140	Couldn't you use the snow methanol injection... I thought I read that boosts octane of the gas if you really wanted to run even higher compression. Not sure if that is a stupid comment but hey. __________________ 2001 laser red cobra Mods : MGW Shifter, Mac 2.5" catback and off road H-Pipe, jlt cold air intake and custom sct tune by brenspeed, Eibach pro kit, MM CC Plates Interior Mods : Alipine IDA-X001 headunit and sirius, White Hurst 5 speed ball

January 23rd, 2008, 04:05 PM	#35
Smoothgrandmama Editor Join Date: Apr 2007 Location: Willis,Texas Posts: 2,111	Me Too! Execpt Your A Purist. . . . One Of Mine Is Supercharged. Although There Are Rumors That Yours Is On The Juice! __________________ "The issue of Prayer is not prayer itself, The issue of Prayer is God"

January 24th, 2008, 11:05 AM	#38
Goblin Hardcore Enthusiast Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 1,990	The day i see a stock bore, stock stroke N/A 281ci 4v lay down 590rwhp.. or even 550... I'll give up pushrods in favor of OHC again. __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

January 24th, 2008, 11:19 AM	#39
Smoothgrandmama Editor Join Date: Apr 2007 Location: Willis,Texas Posts: 2,111	Give Me 5k And Half Of Ac's Brain And Ill Do It! __________________ "The issue of Prayer is not prayer itself, The issue of Prayer is God"

January 24th, 2008, 12:01 PM	#40
Goblin Hardcore Enthusiast Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 1,990	Going to take alot more than 5k! __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

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