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Old 03-07-2006, 11:11 PM   #1
zimmy
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Late Model Drivetrain Swap

Hey Everyone,

I picked up a wrecked 2003 Chevy Z71 4X4 Pickup today. The truck came equipped with the 5.3L Vortec Motor.

My question is: Has anyone tried transplanting a drivetrain of this nature into a blazer before?

I am getting ready to start a frame off restification on my 72 4x4 and would really like to make this drivetrain work.

Any information you can contribute would be much appreciated.
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Old 03-08-2006, 06:17 AM   #2
blazerboy72
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Re: Late Model Drivetrain Swap

I am puttting a 5.3 in my 71 but it is a 2wd. If this one goes good I will do my 72 4wd next. So far it seems like a straight forward swap, other than all the wiring.
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Old 03-08-2006, 09:13 AM   #3
Huck
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Re: Late Model Drivetrain Swap

The motor swap is pretty basic--the wiring and installing a electronic fuel pump---Oxygen sensor on the exhaust. The trans, transfer case, etc. will be a major PITA as the suspension is completely different in the front---. newer chev trucks have torsion rod suspension--independent axles--etc.
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Old 03-08-2006, 04:41 PM   #4
vtblazer
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Re: Late Model Drivetrain Swap

Cool purchase!

I'd use only the motor/tranny from the 03. (of course all the electrics needed too)
Keep everything else as is by using the appropriate adaptors/modification's.

Would make thing's WAY simpler, IMO.
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Old 03-09-2006, 09:50 AM   #5
Jonboy
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Re: Late Model Drivetrain Swap

Would it be better to use the 205 case than the T-case out of the '03? I figured it might be best to use the front section of the exhaust also, to keep it emissions friendly and locate the 02 sensors and all.
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Old 03-15-2006, 12:52 AM   #6
Wasted Income
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Re: Late Model Drivetrain Swap

What about using a 2wd transmission with a divorced NP205? Then you could keep your axles, and the driveshaft will still be on the correct side.
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Old 03-15-2006, 01:00 AM   #7
Medicanman71
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Re: Late Model Drivetrain Swap

emissions friendly, i thought one of the best things about our blazers is the fact that in most states they dont need to pass or comply with any emissions/smog laws
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Old 03-15-2006, 01:18 AM   #8
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Re: Late Model Drivetrain Swap

I started mine today,im putting a 6.0 auto 2 wheel drive from a 2004 van with 9000 miles,im using a 4wd blazer frame,but im going to stretch it to build a short bed pick up truck,i belive Advance Adaptors sells an adaptor that connect the 4 L80 to the 205 transfer case. Any advice welcome.
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