5.4 heads on a 4.6?

hayes00gt

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Nov 6, 2004

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Nov 16, 2004

#1

• Nov 16, 2004

• #1

do the truck 5.4 heads fit on the 4.6? if so what else do i need to do to the motor for this work well? someone told me that this is the set up on the 05 gt's, is this true?

 

CanadaStang

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Sep 7, 2003

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Mb

Nov 16, 2004

#2

• Nov 16, 2004

• #2

hayes00gt said:

do the truck 5.4 heads fit on the 4.6? if so what else do i need to do to the motor for this work well? someone told me that this is the set up on the 05 gt's, is this true?

Click to expand...

I do believe the 5.4L heads are the same as yours. The 05 Stangs have the 24 valve heads.

 

P

Pitch Black

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Jul 17, 2004

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Nov 16, 2004

#3

• Nov 16, 2004

• #3

Why would you want to swap them? They are the same heads as yours

 

WRXracer

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Feb 28, 2003

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#4

• Nov 16, 2004

• #4

I think he wants to swap the 24 valve truck heads..

 

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Pitch Black

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#5

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In that case, no you can't.

 

CanadaStang

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#6

• Nov 16, 2004

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WRXracer said:

I think he wants to swap the 24 valve truck heads..

Click to expand...

No can do man

 

B

bdcardinal

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Jun 10, 2003

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santa barbara, CA

Nov 17, 2004

#7

• Nov 17, 2004

• #7

the 3v heads will physically fit, however the rest of the parts to bolt onto the heads to make it work would have to be scavenged off a truck. so theoretically, given enough money, it can work. but if you mean the truck 2v heads then they will fit because they are completely identical to your heads in every way.

 

CanadaStang

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#8

• Nov 17, 2004

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Problems you would run into....Let's see...

Intake, Throttle body (electronic), Upr rad hose, custom exhaust headers, harnesses (elec. & vac), EEC, Clean air tube, Heater return tube and hose, heater supply hose, to name a few.

You could go with a cable operated t/b, but now you have to work out your IAC scheme, as the elec. t/b eliminates IAC components. I'm sure there are numerous challenges along the road to a 3V swap.

This subject has been covered numerous times, and the general concensus is that to date, it's not worth the 40 rwhp. You can get that with 2V cams.

 

GoBabyVroommm

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Mar 22, 2003

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Nov 17, 2004

#9

• Nov 17, 2004

• #9

Do the truck 2v heads flow more than the factory 2v mustang heads?

 

P

Pitch Black

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Nov 17, 2004

#10

• Nov 17, 2004

• #10

GoBabyVroommm said:

Do the truck 2v heads flow more than the factory 2v mustang heads?

Click to expand...

No

 

WRXracer

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#11

• Nov 17, 2004

• #11

they are the same heads but designed for better lowend and less top end.. and im talking about the 2v heads..

 

hayes00gt

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Nov 6, 2004

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Nov 17, 2004

#12

• Nov 17, 2004

• #12

thanks guys appreciate it.

 

P

Pitch Black

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Nov 18, 2004

#13

• Nov 18, 2004

• #13

WRXracer said:

they are the same heads but designed for better lowend and less top end.. and im talking about the 2v heads..

Click to expand...

No they aren't. Thay are mirror identicles to 4.6L 2V heads. Its the cams and increased stroke that give them that low-end grunt.

 

CanadaStang

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Nov 18, 2004

#14

• Nov 18, 2004

• #14

Pitch Black said:

No they aren't. Thay are mirror identicles to 4.6L 2V heads. Its the cams and increased stroke that give them that low-end grunt.

Click to expand...

what he said