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07-28-2005, 07:53 PM
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#1 |
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Senior Member
Join Date: Jul 2005
Location: Trussville, Al
Posts: 819
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Engine swap 4.6 to5.4
With all the mods I have seen posted, this I have not seen and I am wondering if it could be done. Would it be practical to do and how much more power does the 5.4 have on the 4.6. Taking for granted this would be going into a '03 GT with a five speed. Any input?
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07-28-2005, 07:56 PM
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#2 |
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3v's are slow
Join Date: Dec 2004
Location: Here and There
Posts: 17,152
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Re: Engine swap 4.6 to5.4
I saw this in a mag a few months back but cannot remember the power results.
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2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP  2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
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07-28-2005, 08:13 PM
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#3 |
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Senior Member
Join Date: Jul 2005
Location: Trussville, Al
Posts: 819
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Re: Engine swap 4.6 to5.4
So it can be done with a Triton 5.4? Would you go to a Six speed?
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07-28-2005, 08:43 PM
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#4 | |
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Im gonna show her my...
Join Date: Dec 2004
Location: Somewhere providing FREE tech support.
Posts: 4,269
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Re: Engine swap 4.6 to5.4
Quote:
Bad News: It's a little impractical for a street based ride considering what you can do with a 4.6L 4V Big Bore or boosted buildup. 4.6L's are heavy compared to a 351w, so the 5.4L's are a freaking elephant compared to the Windsor motors. With the taller deck height on the 5.4 block, you pretty much have to pull the motor to even take off the head covers or service the top end. However, you can make some serious N/A Horsepower and Torque with a 5.4L, but at almost double what it cost to build a comparable Windsor motor. If you are looking to build a street machine, I'd suggest a turbo or supercharger on the 4.6L. But if you are building a dedicated drag car you could build a 5.4L, but I think a 351W stroker would be faster. 
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I heard it on the internet, so it must be true. "I believe that a person's moral compass can be determined by how he references free men the right to defend themselves." T. Nugent "An armed society is a polite society. Manners are good when one may have to back up his acts with his life." R. Heinlein "Never argue with an idiot. They drag you down to their level, then beat you with experience." -Unknown |
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07-28-2005, 08:45 PM
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#5 |
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Daddy x4 ...we're done
Join Date: Dec 2004
Location: Oxford, AL
Posts: 11,551
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Re: Engine swap 4.6 to5.4
Check with myillwillinc on the Mafia board; he did the swap in his New Edge GT.
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring |
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07-28-2005, 09:13 PM
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#6 | |
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Friends
Join Date: Dec 2004
Location: Pell City, AL
Posts: 1,371
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Re: Engine swap 4.6 to5.4
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Either way, yes he did the swap but I think he used a stock engine and obviously came across a good deal. I agree with nathan. For all the money you could spend, build the 4.6 and you can make the same power for less money.
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2001 Cobra 'Vert Procharged and Intercooled 455rwhp/441rwtq Work Car: 2005 Honda Odyssey 400 whp Turbo V6, 6-speed, full cage, H&R Suspension, Brembo Brakes |
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07-28-2005, 09:20 PM
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Daddy x4 ...we're done
Join Date: Dec 2004
Location: Oxford, AL
Posts: 11,551
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Re: Engine swap 4.6 to5.4
Quote:
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-Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring |
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07-29-2005, 08:20 AM
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#8 |
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IDK
Join Date: Dec 2004
Location: Jacksonville, AL
Posts: 1,136
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Re: Engine swap 4.6 to5.4
5.4 swap + KB =teh $hit!!
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--2005 Chevrolet Corvette C6 Z51-- --2007 Lexus GS350 AWD-- --1958 Plymouth Belvedere aka "Christine"-- |
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07-29-2005, 05:38 PM
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Administrator
Join Date: Dec 2004
Location: Huntsville, AL
Posts: 14,774
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Re: Engine swap 4.6 to5.4
Quote:
 It will also be a lot lighter. With that heavy ass engine up front I would imagine it handles like a pig.
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1998 Mustang GT Coupe - World's Slowest Racecar 2005 Toyota 4Runner SR5 V8 2013 Volkswagen Jetta Sportwagen TDI |
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07-29-2005, 07:13 PM
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#10 |
Join Date: Jan 2005
Location: Jacksonville
Posts: 210
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Re: Engine swap 4.6 to5.4
At one time I was thinking of going this route, I had a guy in Anniston who was going to put a lightning motor in my 98. But between the cost and the added weight I started looking for somthing else.
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