Engines and Components› Engines, Blocks and Components

BLUEPRINT ENGINES

BLUEPRINT MOTORSPORTS GM LS COMPATI

$14,569.45

SKU: B05J BPMS427LS

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty race applications. This BluePrint Engines 427 c.i. Pro Series monster delivers 638 horsepower and 540 ft-lbs of torque. It features BluePrint aluminum heads, a hydraulic roller cam, hypereutectic pistons, and a forged crankshaft, all housed in a high-strength LSX-style cast iron block. This engine does NOT come with a Fuel Injection ECU and Wiring Harness. It includes a Harmonic Balancer, Valve Covers, LS Swap Oil Pan, and Timing Cover.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBLUEPRINT ENGINES
Part NumberB05J BPMS427LS

Videos

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How’s a Crate Motor Designed? We Tour the BluePrint Engines Factory to Find Out!
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BluePrint Engines Customer Review - Jared
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Unboxing a BluePrint Crate Engine
NEW BluePrint Engines LS + ZF 8-Speed & 427 LS Motorsports (SEMA 2025)

NEW BluePrint Engines LS + ZF 8-Speed & 427 LS Motorsports (SEMA 2025)
The Complete BluePrint Engines Facility Tour | From Start To Finish

The Complete BluePrint Engines Facility Tour | From Start To Finish
A BRAND NEW BLUEPRINT ENGINES 427 SBC! WHY WOULD WE TEAR IT APART?? 🤯

A BRAND NEW BLUEPRINT ENGINES 427 SBC! WHY WOULD WE TEAR IT APART?? 🤯
BluePrint Engines at the 2024 SEMA Show - New crate engine offerings and more!

BluePrint Engines at the 2024 SEMA Show - New crate engine offerings and more!
BluePrint Engines PSLS4272CTF dyno pull

BluePrint Engines PSLS4272CTF dyno pull

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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