The Stovebolt Site Forums The Shop Area Engine Shop Trailblazer-Colorado Rear Ends

Folks - Regarding the 100's of posts on suitable rear end swaps for the AD Trucks has anyone had any experience with the new GM Trailblazer SUV or Colorado PU rear ends? I measured a Trailblazer recently from the middle of the tire to the middle of the tire and it was the exact same width as my stock 51 AD....... I haven't measured a Colorado but the next time I get a chance I will.... I don't have any specs on ratios or posi-options on these new generation GM vehicles but I'm "intrigued!"

Sounds real interesting, would like to know what kind of gear ratio are in those things..

3.08
3.42
3.73
4.10
according to the chevrolet website when you got to the build your own section

not sure of the widths

Interesting indeed.

Thanks for the comments, I like the gear ratios and considering the relative popularity of the TBlazer there should be some "doners" showing up in the junk yards eventually. The Colorado looks very narrow to me but I haven't measured one yet.

If you tell me where to measure from exactly, I can go measure the Canyon at the farm.

I have an 85 blazer rear end in my 1948 1/2 ton
It has 6 bolt pattern which my original 16 inch wheels fit- while later 15 inch chevy rims dont fit...for what it's worth

I just noticed this thread topic. We've had the an email keep bouncing around in the server. This is the message we get when mail is bounced. I don't know what it means ... but I figure you all would want to know.

(Ignore the mail the postmaster ... that'd be me ... and I've been just putting it in the trash!)

Peg

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I'm sorry to have to inform you that your message could not be be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The Postfix program

<jrnash90@hotmail.com>: host mx1.hotmail.com[64.4.50.99] said: 550 Requested
action not taken: mailbox unavailable (in reply to RCPT TO command)

I purchased a GMC canyon The truck is close to the same size as my 57 chevy pu. 57 is 62 center to center. canyon is 60. wheels could make a difference. The GMC comes with three ratio's
3.42, 3.73, and 4.10.

dutch57, are the wheel bolt patterns the same?
Garry K

That bounced mail just came thru four times in the last two hours.

fyi

Peg

Thanks for all the feedback on this topic, I had an old e-mail address in my profile if that was contributing to the "bounce back" problem .... Thanks for measuring the Colorado/Canyon, it looked a little narrow to me visually.

Garry K:
I measured the 57 it is 2.75 lug to lug and app. 3in lug to center. The 2005 measures the same I have not tried to put a 57 wheel on a 2005 but they look the same. I am planning to put a later model step side bed on my 57 so I will need a wider axle. Any thoughts on this?

We have a 2002 Trailblazer and the L6 engine is something else. Wow does she move when you throw cobs in the firebox! Has anyone put one of these jewels in an AD?

No, but I would like to put one in my '57 Belair 4 dr sedan!!