If your Cowboy Cadillac just ain’t cutting the muster (performance wise), this clip is for you. The crew at Stangkilr Productions is all set to give us the 4-1-1 on how to build a quick pickup without springing for a supercharger or turbocharger setup. Here’s a brief history of the build as well as the latest upgrades.

After a fire wiped out their (5.3-liter) twin turbo GMC pickup, these guys made the decision to go in a different direction. They chose a base model 2024 GMC Sierra as a donor to repair their totaled project truck. The cab was bolted to the short bed chassis and the engine and transmission decision was at hand.

These guys had a brand-new crate engine sitting around, so the choice was pretty straightforward. The shiny new mill would be a 6.6-liter LT8 V8 from GM Performance. First, let’s talk LT8. The engine block is cast iron with 6-bolt nodular iron main bearing caps. Remember when we thought a 4-bolt main was bullet proof? Internals include a forged steel crankshaft, forged powder-metal connecting rods and hypereutectic aluminum pistons. It’s also internally balanced. The cylinder heads are rectangular port aluminum direct injection with 59cc combustion chambers. When it’s all sealed up, the compression ratio is rated at 10.8:1. This motor is virtually indestructible.

The lads at Stangkilr opted for an aftermarket camshaft. It’s a Brian Tooley Racing (BTR) 225. Perfect for the degree of boost that will be added later in the build.

The automatic transmission is a 6L80E with an aftermarket converter.

Today, these gearheads will be installing a Holley Hi Ram intake manifold and a custom fabricated cold air intake system. Will these guys see any performance gains from these bolt-ons? Check out the dyno session and see.

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