8.1 in colorado?
#1
8.1 in colorado?
A friend of mine has an 04 colorado with the 3.5. He wants to do a v8 swap eventually and when I mentioned the gen VII 8.1/allison trans he got all wide eyed lol so I was just wondering if it would be possible to do this swap? what all will I need? Can the stock rear axle handle it?
#4
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Custom headers for the 8.1 would be high dollar. That allison trans would drag the ground without doing major tunnel work. You can make alot of power with a 6.0 or 5.3 for reasonable cost. The 8.1 doesn't have a big aftermarket following. Heads cams intakes ect
#5
ok, Thank you for explaining that. The trans dragging is definitely a huge issue. would a 4l80e be a better option? I think they used that trans in the avalanche 2500s
Last edited by corv271; 01-14-2012 at 09:31 PM.
#7
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The 4l80 is a beast to, Its alot bigger than the 4l60. Go with a built 4l60 with a 400hp motor and it will be nasty.(auto colorados come with 4l60)
Im building a colorado with a 5.3, 4l60, and a big nos bottle lol
I will be starting mine in a few months so ive done a ton of reaserch. Mine will be used as my DD so im going to stupid so I can keep reliabilty.