BluePrint GM LS 427 c.i. ProSeries Crate Engine – 605 HP, Base Dressed, Fuel Injected

605 HP of Rowdy LS Power – Built for Speed and Guaranteed to Make Your Buddies Jealous

Alright, y’all, if you’re looking for an engine that’ll turn your Camaro, C10, or Chevelle into an absolute street dominator, the BluePrint GM LS 427 ProSeries Engine is your ticket to horsepower heaven. This ain’t some run-of-the-mill crate engine – it’s a 605 horsepower, fuel-injected monster ready to lay down some rubber and leave your competition eating dust.

Built with a high-strength cast iron block and a forged rotating assembly, this bad boy is designed to handle whatever you throw at it – whether it’s Friday night at the drag strip or a spirited cruise down Main Street. With a hydraulic roller cam and BluePrint LS3 aluminum heads, this engine breathes so well it might just start its own weather system.

What’s Under the Hood?

This base dressed engine is packin’ the good stuff:

• Drive-by-Wire Throttle Body for razor-sharp throttle response.
• GM Plastic Intake Manifold loaded with 42# Injectors and a Returnless Fuel Rail to keep the fuel flowing like a firehose.
• Harmonic Balancer, Valve Covers, and Timing Cover included – because details matter.
• LS Swap Oil Pan for maximum compatibility with classic Chevy builds.
• Coil Packs, Spark Plugs, and Wires included – because nobody’s got time for parts store runs.

Why It’s a Beast

• Horsepower & Torque: 605 HP / 565 FT. LBS. – Enough to scare the neighbor’s cat and maybe the neighbor too.
• Compression Ratio: 11:1 – Runs on premium 91 octane because this engine’s got standards.
• Camshaft Specs:
  • Lift: .624" intake / .624" exhaust.
  • Duration (@ .050): 239° intake / 255° exhaust.
  • Lobe Separation Angle: 114° – Perfect for high-rpm hooliganism.
• Cylinder Heads:
  • 69cc combustion chambers to squeeze every ounce of power out of your fuel.
  • 2.165" intake valves and 1.590" exhaust valves to gulp air like a marathon runner.

Built for Battle

Block Features:

• BluePrint High-Strength Cast Iron Block with:
  • Thickened deck for durability – tougher than your buddy who insists on running a stock clutch.
  • Priority main oiling to keep things lubed even when you’re screaming at 6,000 RPM.
  • 6-bolt mains to keep everything locked down tight.

Rotating Assembly:

• Forged Crankshaft with a 4.125" stroke – ready to handle all 605 ponies.
• Forged 6.125" Connecting Rods and Forged Pistons – because “good enough” just ain’t in this engine’s vocabulary.

Perfect for Your Chevy Build

Whether it’s a resto-mod Chevelle, a rowdy C10 street truck, or a fire-breathing Camaro, this LS 427 has what it takes to transform your ride into the stuff of legends. And with modern fuel injection, you’ll have the drivability to back up all that raw power.

Important Stuff to Know

• Controller Not Included: You’ll need to grab an engine management system to make this beast purr.
• Fuel Requirement: 91 octane or higher – this ain’t your grandma’s grocery-getter.
• Retro-Fit Oil Pan: Fits most 1955-1995 GM front-engine, RWD, V8 cars, so it’s ready for action.