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Engines and Components› Crankshafts and Components

Callies Performance Products

Compstar 4340 Forged Crankshaft

$3,438.95 $3,363.95 Save $75.00

SKU: CS-5300-CP

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Overview

The Callies Compstar CS-5300-CP is an LS 5.3L 363 stroker rotating assembly kit. It features a Callies Compstar 4340 forged steel crankshaft with a 4.000-inch stroke and 8 counterweights. The kit includes Callies Compstar 6.125-inch H-beam connecting rods with ARP 2000 rod bolts and CP Bullet 2618 forged dish pistons.
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The Callies Compstar LS 5.3L 363 stroker rotating assembly kit (CS-5300-CP) is engineered for high-performance engine builds, capable of supporting up to 1400 horsepower. This kit includes a robust Callies Compstar 4340 forged steel crankshaft with a 4.000-inch stroke and 8 fully counterweighted for optimal bearing load distribution. Complementing the crankshaft are Callies Compstar forged 4340 steel H-beam connecting rods, secured with 7/16-inch ARP 2000 rod bolts. The assembly features CP Bullet 2618 forged dish pistons with .180 wall wrist pins, designed to fit 15-degree LS heads, and CP performance piston rings with 3.0mm oil rings. High-performance H-series main and rod bearings are also included. The rotating assembly is internally balanced in-house by CNC-Motorsports, ensuring a balanced and smooth operation. When paired with a 62cc cylinder head, this kit achieves a 9.5:1 compression ratio. This assembly is specifically designed to fit GEN III and GEN IV LS engines, including 4.8L LR4, LY2, L20, and 5.3L Vortec 5300, LM7, L59, LM4, LMF, LH6, LY5, LMG, LC9, LH8, and LH9 variants. Optional upgrades include Compstar Xtreme Duty H Beam Rods or Boostline Rods for extreme engine builds. For higher horsepower applications or specific needs, contacting CNC-Motorsports for alternative kit options is recommended.

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.

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Specifications

BrandCallies Performance Products
Part NumberCS-5300-CP
CategoryEngines and Components
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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.

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