Engines and Components› Cylinder Heads and Components

Allied Motor Parts

Chevy 350 5.7L CNC-Ported Aluminum Cylinder Heads

$1,835.00

SKU: ALL-80000CNC

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Allied Motor Parts Chevy 350 5.7L V8 pair is a set of new, CNC-ported aluminum cylinder heads designed for engines from 1965 to 1999. These heads feature a 220cc intake runner, a 67cc chamber, and 2.02-inch intake valves with 1.60-inch exhaust valves. They are constructed with 21-4N stainless steel valves and can accommodate a maximum lift of .600 inches.

They come equipped with screw-in studs and guide plates for enhanced stability.
Show original supplier description
The Allied Motor Parts Chevy 350 5.7L V8 pair represents a significant upgrade for performance-oriented engines manufactured between 1965 and 1999. These are new, aluminum cylinder heads that have undergone CNC porting for optimized airflow and combustion efficiency. The heads feature a 220cc intake runner volume and a 67cc combustion chamber. They are equipped with 2.02-inch intake valves and 1.60-inch exhaust valves, both constructed from durable 21-4N stainless steel, and are designed to support a maximum valve lift of .600 inches. They include essential components like screw-in studs and guide plates, which contribute to increased stability and reliability, especially under demanding conditions. The construction from lightweight aluminum further aids in overall engine performance. This product is designed as a direct replacement or performance enhancement for Chevy 350 5.7L V8 engines within the specified year range. It is important to verify the specific engine and vehicle application to ensure proper fitment. The listing explicitly states "NO CORE REQUIRED." No specific installation notes or post-installation requirements beyond standard engine assembly are mentioned in the provided text.

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

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

BrandAllied Motor Parts
Part NumberALL-80000CNC
CategoryEngines and Components

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy