TurboHummer.Com

Replacing the stock Hummer 6.5 GM Diesel with a
Twin-Turbo Nitrous Injected Big Block 454 Chevy.
A Documentary

Installation: Engine, Trickery, Exhaust, Plumbing, Computer

We can not sufficiently stress the need for a good shop when undertaking a project like this.  An average garage would laugh you out of the door if you asked them to put an engine  into anything it wasn't made for.  They're parts swappers, not engineers.

That's where Champion Muffler in Decatur, GA comes in.  The shop owner, Desmond, is both engineer, and mechanic and loves a challenge.  Reach him at:

(770) 322-6065. 

Pulling the old engine out is the first order of business.  Obviously we should remove the hood, headlights and turn signal wiring harness, pull out the five radiators, fender wells, batteries, and make room to work... nope we are smarter than that.  If we remove and install from under the truck we only have to remove the front driveshaft and mounting bolts.

The old engine will be rebuilt and sold to recoup the investment in the twin turbo project. 

The block bolt patterns match perfectly for the transmission but diesels have 6 bolts holding the torque converter to the flex-plate.  Gasoline engines only have three.  What should we do?  The install committee deliberates.

They say that even the high horsepower engines use only three bolts in the torque converter and don't worry about it.   The three holes in the torque converter match with 3 holes in the flex plate so we bolted them together and ignored the extra 3 holes.

The brackets, pulleys, and water pump had to be removed in order to raise the engine into place.  The fuel pump hits the chassis and we had to remove it and find an electric pump capable of at least 26 psi.  This will allow it to produce 9 pounds minimum pressure above the 12 pounds of boost that we plan to run.

It's in and bolted down and we have finished making the engine and transmission mounts.  A lot of time was spent at this step.  All that remains are the plumbing details.

 
 
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