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Engines and Components› Cylinder Heads and Components

Chevrolet

LS1/LS6 243/799 CNC Ported Cylinder Heads

$1,650.00 $1,495.00 Save $155.00

SKU: AHP-65056PC

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Overview

The Chevrolet LS1/LS6 CNC Ported 243/799 Heads are a performance upgrade designed for 5.7L (350ci) V8 engines from 1997-2004. These heads feature CNC porting for improved airflow and performance enhancement.
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The Chevrolet LS1/LS6 CNC Ported 243/799 Heads are a performance upgrade for 5.7L (350ci) V8 engines manufactured between 1997 and 2004. These heads have undergone CNC porting on a 5-axis Rottler CNC machine to enhance airflow and boost performance. They are equipped with .650 dual springs, new retainers, spring seats, and valve seals, along with 2.02-inch intake valves and 1.59-inch exhaust valves. The intake ports measure 243cc, the exhaust ports are 95cc, and the combustion chambers range from 66-68cc. These high-performance heads are designed for those looking to supercharge their LS1 or LS6 engine. They are meticulously crafted to exceed OEM specifications, ensuring top-notch quality and performance. The CNC porting process is ideal for enthusiasts seeking improved airflow, increased power, and overall enhancement for their LS1 or LS6 engine. Experience the outstanding value and precision engineering that makes these heads a top choice for performance applications.

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

BrandChevrolet
Part NumberAHP-65056PC
CategoryEngines and Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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.

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