2v 5.4 vs 4v

OneBadNotch · June 11th, 2009, 10:45 AM

I am doing a 5.4 swap in a 1990 LX, and the 5.4 is a 2v. I wanted a 4v but the price was just too good to let go. Is it possible just to swap the 2v heads over with the 4v? I am planning on a turbo and i heard the 4v heads would be much better flow.

OneBadNotch · June 11th, 2009, 10:46 AM

Ya'll might have to bear with me on this one because i am normally a pushrod engine guy.

99blkcobra · June 11th, 2009, 11:09 AM

why not get the 5.4 4v?

bitemark46 · June 11th, 2009, 05:56 PM

Any 4v head will fit the block but your hardest decision will be which intake to get. The 4.6 4v heads have smaller ports than the navi heads.

OneBadNotch · June 11th, 2009, 06:40 PM

well the 4v engines are much harder to find since they only come in the lincoln navigators and blackwoods. And i had a price on this engine i couldnt pass up. But i have heard that these engines in the newer 2000 and up gts can run 12's on just stock motor. Is that true?

NeverEnuff · June 11th, 2009, 08:02 PM

5.4 2V is junk for RPM and performance....

4V is the only way to go. If you are looking for Turbo...and only want 12s...um...yeah. lol.

Sorry...just thought that was amusing....

What is your goal. WHy 5.4 and why 4V and why turbo....if you do all those three and give the right parts and build...1000+hp is pretty attainable....and 12s would be pathetic unless you trapped about 140-150 mph. lol.

OneBadNotch · June 16th, 2009, 09:43 PM

well basically, i wanted to do something that was completely different then all the other fox bodies i have seen. And i want something that is quick and can be driven everyday. Thats why i decided to go with the 5.4, and the fuel injection is a plus. And i figured that not only would this swap be rare to find in a fox body, but its hard to find them in any mustangs really. My end goal is to have a 800 horsepower street monster.

Mach Boy · June 16th, 2009, 10:56 PM

5.0 Magazine this month has a Fox with a GT500 motor in it.

bitemark46 · June 16th, 2009, 10:58 PM

Originally Posted by OneBadNotch

My end goal is to have a 800 horsepower street monster.

I hope you have the money for that. Hp aint cheap. If you plan your build on a piece of paper and total it up...multiply it by 2 and that'll be pretty close on how much you're going to spend.

How much $$ you looking to spend?

-Mark

93hatch · June 16th, 2009, 11:15 PM

my friend has a 4v 5.4 out of a navi sitting in a notchback he has, has a carbed intake n shit for it too, got laid off though

car was almost done too

phoenix99 · June 17th, 2009, 10:21 AM

Originally Posted by OneBadNotch

well the 4v engines are much harder to find since they only come in the lincoln navigators and blackwoods. And i had a price on this engine i couldnt pass up. But i have heard that these engines in the newer 2000 and up gts can run 12's on just stock motor. Is that true?

my 5.4 4v is from a f-150 ... with cobra 97 head and intake

it's working very well

bitemark46 · June 17th, 2009, 11:39 AM

Originally Posted by phoenix99

my 5.4 4v is from a f-150 ... with cobra 97 head and intake

it's working very well

Has the snow melted yet?

Still waiting on those dyno numbers.

phoenix99 · June 17th, 2009, 12:28 PM

Originally Posted by bitemark46

Has the snow melted yet? Still waiting on those dyno numbers.

hahahah

I already melted a set of tire

next week i'm going to the tuner and maybe to the dyno too !

you still want to swap your 4.6 for a 5.4 ?

bitemark46 · June 17th, 2009, 03:12 PM

Originally Posted by phoenix99

hahahah

I already melted a set of tire

next week i'm going to the tuner and maybe to the dyno too !

you still want to swap your 4.6 for a 5.4 ?

My mind changes more than I do my underwear. I'm still on the fence about it.

phoenix99 · June 17th, 2009, 03:37 PM

this next tuesday, i'm going to the tuner and after to the dyno !
I'll have some number for you very soon !

I hope you will fix your mind on the 5.4 4v

Mustang RacR94 · June 18th, 2009, 02:06 AM

I have a pair of heads off of a 96 or 97 cobra Ill sell you, if you offer the right price, Im in a high performance class very soon and I can work them for you in there, or Ill just clean them up ASAP and ship them out, if your interested make me an offer

and ill get you pictures up if your interested

OneBadNotch · June 18th, 2009, 01:00 PM

Yea, i know it wont be cheap. The car already has a ton of money in it, so this wont be anything new. But this go around i probably have about 12 thousand to put in it. Plus what ever i can get of my rims, tires, hood, and old 5.0 and tranny. And i have a set of seats im gonna get rid of too.

GTRACER88 · June 22nd, 2009, 03:45 PM

Originally Posted by phoenix99

my 5.4 4v is from a f-150 ... with cobra 97 head and intake

it's working very well

Phoenix, did you encounter any trouble adding 4v heads to the 5.4L? Did it fit under your hood? What other parts did you need? It sounds very interesting. Thanks.

GTRACER88 · June 23rd, 2009, 01:06 AM

It might even be cheaper to buy a 2v and get the TFS heads that are coming out.

HBK_2007 · June 23rd, 2009, 02:31 AM

Originally Posted by GTRACER88

It might even be cheaper to buy a 2v and get the TFS heads that are coming out.

in all honesty, if he wants to bulid this within the next year, id just go 4v. with that said, his goals can be actived with 2v PI heads, but i wouldnt count on the trickflow heads till next year

June 11th, 2009, 10:45 AM	#1
OneBadNotch Regular 1990 lx Join Date: Jun 2009 Location: Jonesboro,GA Posts: 121 iTrader: 0 reviews	2v 5.4 vs 4v I am doing a 5.4 swap in a 1990 LX, and the 5.4 is a 2v. I wanted a 4v but the price was just too good to let go. Is it possible just to swap the 2v heads over with the 4v? I am planning on a turbo and i heard the 4v heads would be much better flow.

June 11th, 2009, 11:09 AM	#3
99blkcobra Hardcore Enthusiast 1999 cobra Join Date: Sep 2007 Location: Las Vegas Posts: 1,741 iTrader: 2 reviews	why not get the 5.4 4v? __________________ 1999 Mustang Cobra (rebuilding, someday...) 1996 civic dd [/SIZE] MM Cobra Club #3

June 11th, 2009, 05:56 PM	#4
bitemark46 Regular Join Date: May 2008 Location: Tampa, Fl Posts: 397 iTrader: 0 reviews	Any 4v head will fit the block but your hardest decision will be which intake to get. The 4.6 4v heads have smaller ports than the navi heads. __________________ -Mark- 98' N/A Cobra (Stock longblock) 11.79 at 114.64 (1.62 60ft)

June 11th, 2009, 08:02 PM	#6
NeverEnuff Hardcore Enthusiast 1989 LX Coupe 7.1@99mph Join Date: Jan 2009 Location: Texas Posts: 1,685 iTrader: 0 reviews	5.4 2V is junk for RPM and performance.... 4V is the only way to go. If you are looking for Turbo...and only want 12s...um...yeah. lol. Sorry...just thought that was amusing.... What is your goal. WHy 5.4 and why 4V and why turbo....if you do all those three and give the right parts and build...1000+hp is pretty attainable....and 12s would be pathetic unless you trapped about 140-150 mph. lol. __________________ 89 LX Coupe-Carb'd 32v-437rwhp NA, 592rwhp N20 01 Bullitt-32v swapped 96 GT-Cammed E85 www.KPERacing.com

June 16th, 2009, 10:56 PM	#8
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,846 Blog Entries: 1 iTrader: 1 reviews	5.0 Magazine this month has a Fox with a GT500 motor in it. __________________ Looking for 03/04 4V ABS Wiring Harness Connector/Incomplete Wiring Harness (with ABS connector)

June 11th, 2009, 10:46 AM	#2
OneBadNotch Regular 1990 lx Join Date: Jun 2009 Location: Jonesboro,GA Posts: 121 iTrader: 0 reviews	Ya'll might have to bear with me on this one because i am normally a pushrod engine guy.

June 11th, 2009, 06:40 PM	#5
OneBadNotch Regular 1990 lx Join Date: Jun 2009 Location: Jonesboro,GA Posts: 121 iTrader: 0 reviews	well the 4v engines are much harder to find since they only come in the lincoln navigators and blackwoods. And i had a price on this engine i couldnt pass up. But i have heard that these engines in the newer 2000 and up gts can run 12's on just stock motor. Is that true?

June 16th, 2009, 09:43 PM	#7
OneBadNotch Regular 1990 lx Join Date: Jun 2009 Location: Jonesboro,GA Posts: 121 iTrader: 0 reviews	well basically, i wanted to do something that was completely different then all the other fox bodies i have seen. And i want something that is quick and can be driven everyday. Thats why i decided to go with the 5.4, and the fuel injection is a plus. And i figured that not only would this swap be rare to find in a fox body, but its hard to find them in any mustangs really. My end goal is to have a 800 horsepower street monster.

June 16th, 2009, 11:15 PM	#10
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	my friend has a 4v 5.4 out of a navi sitting in a notchback he has, has a carbed intake n shit for it too, got laid off though car was almost done too __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 17th, 2009, 03:37 PM	#15
phoenix99 Regular Join Date: Jun 2008 Posts: 179 iTrader: 0 reviews	this next tuesday, i'm going to the tuner and after to the dyno ! I'll have some number for you very soon ! I hope you will fix your mind on the 5.4 4v __________________ Addicted to adrenaline Forged 5.4 4v with B heads and nitrous. Tuned by me

June 18th, 2009, 02:06 AM	#16
Mustang RacR94 MM Fanatic 99 cobra N/A Join Date: Dec 2006 Location: Fayetteville NC Posts: 3,169 iTrader: 0 reviews	I have a pair of heads off of a 96 or 97 cobra Ill sell you, if you offer the right price, Im in a high performance class very soon and I can work them for you in there, or Ill just clean them up ASAP and ship them out, if your interested make me an offer and ill get you pictures up if your interested __________________ 99 Cobra 03 Cobra motor AFCO H/E Pulley JLT CAI BBK L/T off road H/steeda catback SCT MAF Tune 03 cobra pumps HVGC

June 18th, 2009, 01:00 PM	#17
OneBadNotch Regular 1990 lx Join Date: Jun 2009 Location: Jonesboro,GA Posts: 121 iTrader: 0 reviews	Yea, i know it wont be cheap. The car already has a ton of money in it, so this wont be anything new. But this go around i probably have about 12 thousand to put in it. Plus what ever i can get of my rims, tires, hood, and old 5.0 and tranny. And i have a set of seats im gonna get rid of too.

June 23rd, 2009, 01:06 AM	#19
GTRACER88 I'm cool.. Join Date: May 2008 Location: Houston, TX Posts: 2,165 iTrader: 1 reviews	It might even be cheaper to buy a 2v and get the TFS heads that are coming out. __________________ Super Slow 2012 Grabber blue 5.0...

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