5.4L block

99cobra! · September 27th, 2009, 12:56 PM

Thinking of getting a 5.4L short block, will my heads and intake manifold fit onto that block. I wasn't sure about it, what all parts are needed to make the swap.

ModularSteed · September 27th, 2009, 01:19 PM

im pretty sure your heads will work because the 5.4 is basically a stroked 4.6. make sure you use your valve covers because the 5.4 valve covers have more bolt holes than your heads do.

Mach Boy · September 27th, 2009, 01:52 PM

The heads will swap. I'm not so certain about the intake.

99cobra! · September 27th, 2009, 02:29 PM

Wish I could find a Cobra R manifold, I saw one on ebay about 2 years ago and have never seen one since.

bitemark46 · September 27th, 2009, 05:30 PM

Heads will fit. Intake you'll have to ge either 5.4 spacers (bottleneck) or get a sullivan intake.

-Mark

phoenix99 · September 28th, 2009, 10:21 AM

or you can use b-head and get a wider intake (from MMR) or widen a cobra 96-98 intake

September 27th, 2009, 12:56 PM	#1
99cobra! Regular 1999 Mustang Cobra Not Yet Join Date: Oct 2008 Location: North Carolina Posts: 256 iTrader: 0 reviews	5.4L block Thinking of getting a 5.4L short block, will my heads and intake manifold fit onto that block. I wasn't sure about it, what all parts are needed to make the swap. __________________ MM COBRA CLUB #19 "Real cars aren't powered by their front wheels, they lift them"

September 27th, 2009, 01:52 PM	#3
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,846 Blog Entries: 1 iTrader: 1 reviews	The heads will swap. I'm not so certain about the intake. __________________ Looking for 03/04 4V ABS Wiring Harness Connector/Incomplete Wiring Harness (with ABS connector)

September 27th, 2009, 02:29 PM	#4
99cobra! Regular 1999 Mustang Cobra Not Yet Join Date: Oct 2008 Location: North Carolina Posts: 256 iTrader: 0 reviews	Wish I could find a Cobra R manifold, I saw one on ebay about 2 years ago and have never seen one since. __________________ MM COBRA CLUB #19 "Real cars aren't powered by their front wheels, they lift them"

September 27th, 2009, 05:30 PM	#5
bitemark46 Regular Join Date: May 2008 Location: Tampa, Fl Posts: 397 iTrader: 0 reviews	Heads will fit. Intake you'll have to ge either 5.4 spacers (bottleneck) or get a sullivan intake. -Mark __________________ -Mark- 98' N/A Cobra (Stock longblock) 11.79 at 114.64 (1.62 60ft)

September 28th, 2009, 10:21 AM	#6
phoenix99 Regular Join Date: Jun 2008 Posts: 179 iTrader: 0 reviews	or you can use b-head and get a wider intake (from MMR) or widen a cobra 96-98 intake __________________ Addicted to adrenaline Forged 5.4 4v with B heads and nitrous. Tuned by me

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