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If you have the cash, a shiny new LS crate engine is the way to go. But what’s the best way to add big power to your otherwise-stock crate engine? Well, we picked up an LS3 offering from Blueprint Engines (PN PSLS3760CTF) and decided to find out. Blueprint now offers a crate engine that has all the GM goodness inside we’re used to, but with a few nice features that, to be honest, we typically end up doing ourselves to our stock crate engines.
Dyno Testing a stock LS3 crate engine
The new LS3 crate engine was rated and verified by Blue Print Engines (BPE) at 530 hp and 495 lb-ft, so we decided to find out how close to those numbers it was. We strapped it to the Westech Superflow dyno to find out. Before that though, let’s see what showed up on the pallet from Blueprint.
Now, if this was a Chevrolet Performance crate engine, our first story would be installing a bigger camshaft, but the LS3 crate engine from Blueprint, already comes with a fairly healthy stick from Comp sporting a 0.612/0.585 lift split, a 225/238-degree duration split and 113-degree LSA. Not huge, but it’s big enough to make power and still have great street manners.
Of course, the stock Blueprint engine made great power right out of the crate, but in true gearhead fashion we wanted more, and we wanted it all the flippin’ time. So, given that desire the best solution was boost. We could have dumped in race gas and made over 1,000 hp, but that’s not really realistic on a stock-ish crate engine. Our goal was to push the max of what you could do on high-octane pump gas, which is about 9-10psi. But before adding atmosphere, let’s take a look at what the stock LS3 put out.
How much power does boost add to an LS3?
Adding boost is super popular these days and for good reason. No other power adder gives you so much performance all the time. There are many different ways to stuff atmosphere into your engine: turbos, roots, centrifugal, etc. But we really love the centrifugal systems from ProCharger. Why? Because they’re stupid simple to install on our dyno engines, and it’s easy to dial the boost into exactly where we want it.
Key Points of Blueprint Engines’ LS3 crate engine (PN PSLS3760CTF):
- All new parts including GM LS3 block, crank, rods and hypereutectic pistons
- Dyno validated by Blueprint Engines at 530hp and 495 lb-ft
- Comes with upgraded Comp camshaft and matching springs
- Blueprint’s own rectangular-port heads with billet rocker stands
- Delivered complete with LS3 water pump, LS3 intake, and factory injectors
- Aftermarket parts such as Holley valve covers and GM LS swap oil pan
- Includes electronics such as coils, wires, and all engine sensors.
- 30 month / 50,000 mile warrant
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