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ATK High Performance Engines

Chevy LQ4 408 CI Stroker Base Engine

$11,520.00 $9,269.00 Save $2,251.00

SKU: LS01

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$100 Minimum Order
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Overview

The ATK High Performance Engines LS01 is a long block crate engine designed for performance applications. This Stage 1 engine offers 600 horsepower and is based on the GM 408 LQ4 Stroker platform. It features a 6.7L/408 cubic inch displacement and is fully assembled with internal balancing.
Show original supplier description
The ATK High Performance Engines LS01 is a high-performance stroker base engine designed for Chevy LQ4 applications. This engine is built around a seasoned OE LQ4 6.0L cast iron block, enhanced with a Manley 4340 crankshaft and aluminum cylinder heads. The stroker configuration increases the displacement to 408 cubic inches (6.7L) with a bore and stroke measuring 4.030 x 4.000 inches. Engineered for significant power output, the LS01 delivers impressive performance figures. It produces up to 630 horsepower and 560 lb-ft of torque, making it a potent upgrade for performance-oriented builds. The engine's components are selected for durability and high-RPM capability. This engine is categorized as a base engine, meaning essential components like the intake manifold may not be included, requiring separate purchase or transfer from an existing engine. It is part of ATK's LS-based engine lineup, known for its robust construction and performance capabilities.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandATK High Performance Engines
Part NumberLS01
CategoryEngines and Components
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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