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engine swap

3220 Views 8 Replies 5 Participants Last post by  FrEaK_aCcIdEnT
Hi guys new to the nation. I got a 2005 Colorado. I'm looking an 04 6.0L gto motor. I was wondering if this would be a compatible engine. If so what all do I need to complete the swap. Any info would help a lot thanks.
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Hi guys new to the nation. I got a 2005 Colorado. I'm looking an 04 6.0L gto motor. I was wondering if this would be a compatible engine. If so what all do I need to complete the swap. Any info would help a lot thanks.
As far as I know there is no 6.0 in the 04 GTOs only 5.7L. It wasn't until 05 or 06 that they started the LS2 in the GTO.


Other than that just look around this first page and you will find two or three informational topics that will give you A LOT of information on what is needed.

You will also find a few swap threads that are very informative.
Yeah my bad. It was 06 gto. Hey thanks for the info. I'll look at some these threads.
you can buy v8 colorados. so can it be done yes. can it be done cheaply, probably not.
im guessing you dont have much experience with cars, not bashing you, just making a guess.
Not really I'm more into bikes. I've worked on cars before. But this is my first engine swap. Just trying to get info on and a parts list. To see how much I gonna piss my wife off.lol... I'm not gonna attempt this myself. I've got a few buddies that r gonna aid me in this project. I'm the kinda person who wants to get a s much knowledge and info about something before I dive into a project.
Well once you have the motor and specs, Jared at CPWire acn build you a full plug and play harness.......thats half the battle; they also offer the motor mounts you'll need

The transmission will need to have the bellhousing swapped and the input shaft

All your lines, PS, AC, fuel from motor to there endpoints

Your factory AAM800 rear end wont last long if you plan on driving it hard

the gas pedal will need to be swapped, I have one from a V8 Trailblazer non-SS model


Well that list should keep you busy for awhile.
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Awesome appreciate it.... not using stock tranny. The motor I'm getting is coming with 2004 4L60e A4 trans. It also comes with the input shaft. Another question what gear should I run if the stock rears won't hold up.
OK, trans problem solved

The whole rearend as a whole is not sufficent for the power load. Personally I'd do a ford 9" or a Gm 12 bolt. Neither one will be a simple bolt in, but they are strong rear ends.

OR.........look for a GM AAM860 rear end from a factory 355 V8 truck........probley in the long run this would be the most cost effective......it will bolt right in....tho the up front cost will be more.
or find a cheap 2009 V8 colorado with high mileage that you can pick up for relatively cheap. Then most of the hard part is done. Just swap, tune, run. maybe upgrade the trans if need be. What can the factory trans take, something like 400 rwhp?

search might take a little while to find the right starting truck.
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