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Swap engines in my 2012 GT/CS

7.8K views 31 replies 14 participants last post by  Joyride  
#1 ·
I am deploying overseas for a 6 month tour, I have a 2012 GT/CS and am wondering if I could swap the engine out for the 5.4 L Shelby engine, and if so would I have to replace much to accommodate the new engine?
 
#25 ·
800whp is right on the verge of to much for a street car. I've driven a 600whp gt500 and ride in a 600+whp camero and I don't see how you could want much more. Anything over 850whp and your looking at loosing 1-3 due to wheel spin on the street. So unless your looking for a drag car 600whp is more than enough to dominate pretty much any street car you will find.
 
#26 ·
So can the 5.0 ... there is a guy making well over 700 to the wheels with a Paxton on stock internals and runs mid 10s. Stock (auto) trans too with a stall. There are quite a few people putting down 650-700RWHP on the stock internals and holding up just fine. I would say 750 is pushing it, but I would say the same for the 5.4.

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#17 ·
Yea 16k is SUPER high for a 5.0 aluminator, and yea believe it or not the GT500 motor is good for about 750-800 rwhp, granted on the higher end you should be running E85 or race fuel instead of pump gas but nonetheless they can with stand that much power. Believe it or not most factory FI motors are pretty well over engineered. I realize how much fly wheel hp that is also, thanks though
 
#20 ·
Well like I said, that link is what I based my post off of.

I'd love to see either one of the cars you guys are talking about! A 2012 gt500 running 17psi only makes about 750 flywheel (I'll let you convert that). I'll bet you many a pretty penny that if you start pushing 18-20# of boost through that motor you will blow it and you'll never be even remotely close to 800rwhp with anything less than 22+psi and race fuel. I may not know alot about 5.0s (as you say) but I owned an 08 gt500 and I have a lightning currently. I can show you a list of gt500s blowing motors at 700rwhp. The lightning motor was horribly under engineered btw being that it was a 2 valve blown motor with powder forged rods. The terminator motor is the only motor other than the boss 302 motor that has been over engineered. I know personally of 2 boss 302s making well over 700rwhp with centrifugals running 16# of boost on e85. The boss 302 that went over 200mph in the Texas mile had the 2.8 mammoth Kenny belle and made a little over 790rwhp before it started spinning on the dyno at over 100mph. All 3 of those cars I just told you about have completely unmolested boss motors.
 
#7 ·
First off thanks for your service and be safe overseas. Keep your head down and you spirits up.

As far as the motor, it should be a direct swap, or maybe I should say the powertrain is a direct swap. The 5.4 won't bolt up to the mt-82 and the driveshaft won't bolt up to the tr6060.

To do the swap you would need the full long block, transmission, and driveshaft, the rear end will bolt up to the gt500 DS. You will also need the wiring harness. I have seen motors go for as low as 6k but as high as 20k. Then you still have to buy the trans, DS, and wiring harness. It could easily cost you 10-30k in parts.

Me personally, I would just go buy a Shelby
 
#4 ·
The coyote is a better engine also.