90 GMC Twin Turbo

[TWNFIV3]

Hello all,
Been a member since 2018 and looking through the Wanted ads for some parts but can’t post due to inactivity so I figured I’d start a post!

I have a 1990 GMC C1500 that I’m LS swapping with twin turbo 5.3. Been working on it off and on since 2017 and looking to have it on the road this year.

It’s lowered 4/6, 5.3L LS, TH400, water/meth injection, frame off restoration, Snowden Custom bench seat, complete color change from blue to black in the interior, and a few other details.

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[jasonreichle]

absolutely beautiful, cant wait to see the finished project. some engine bay shots would be more then appreciated

 

[93crewcab]

Any pictures of the build

 

[TWNFIV3]

Here’s a few shots.

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[TWNFIV3]

Interior. This was a major undertaking with all the cleaning and prep work.

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[TWNFIV3]

This week I painted the core support and inner fenders. Ready to install the engine/trans.

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[Metallicblue]

Looks really good

 

[Aarong23]

Here’s a few shots.

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Whoooa. those big, beautiful turbos. Any idea about the power output?

 

[TWNFIV3]

My fuel system is good to 800hp, but I’ll back it down from that. I’m planning to run around 8psi boost so maybe in 650ish range. It’s gonna be a cruiser so I don’t plan to get crazy with the power. This same setup on my buddies truck made 730 to the wheels.

 

[RichLo]

WOW now that's an intro!