3.7 swap for 2006 3.5?
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Junior Member
Joined: Mar 2020
Posts: 3
From: Leadville Colorado
3.7 swap for 2006 3.5?
I have a 2006 H3 Adventure package. 111k. The 3.5 threw a rod a few days ago, 1 week after I bought it. Does anyone have insight into possible 2007 3.7L swap? There is at least one example on a Chevy Colorado forum and most everything looks the same to me. Thanks
...is there a step by step how-to on this?
Junior Member
Joined: Feb 2020
Posts: 15
Super Moderator
Joined: Jul 2007
Posts: 13,083
From: Boat Town USA MI
Oh yeah, a real beauty alright. 
You can buy them that way, its called an Alpha, and they have zero issues, even idle correctly, and can be built to do whatever you want.
To the OP's question. You can swap a 3.7 in where a 3.5 was, you will need a new PCM, a TB off an 07, and will have to get it programmed when together. Not exactly a true bolt in swap, but pretty darn close.
You can buy them that way, its called an Alpha, and they have zero issues, even idle correctly, and can be built to do whatever you want.
To the OP's question. You can swap a 3.7 in where a 3.5 was, you will need a new PCM, a TB off an 07, and will have to get it programmed when together. Not exactly a true bolt in swap, but pretty darn close.
Senior Member
Joined: Sep 2008
Posts: 6,126
From: SE Michigan
While I commend people for the time, $, $, $ and effort an engine swap in an H3/H3T takes. Swapping can and will in most cases cost more than buying an Alpha.
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