Engines and Components Cylinder Heads and Components

Summit

175cc Intake Runner Cylinder Heads

$649.99

SKU: SUM-151124

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
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Overview

These heads feature 175cc intake runners, 67cc combustion chambers, and a high-performance valve job with 1.94-inch intake and 1.50-inch exhaust valves. They are compatible with up to .520 lift cams and utilize flat tappet springs.
Show original supplier description
The Summit Racing™ Vortec Cast Iron SBC Cylinder Heads (SUM-151124) are engineered to deliver enhanced airflow and improved combustion efficiency over early model small Chevy heads. Constructed from durable cast iron, these heads feature 175cc intake runners and 67cc combustion chambers, designed for optimal performance. Key specifications include 1.94-inch intake valves and 1.50-inch exhaust valves, paired with flat tappet springs capable of handling up to .520 inches of valve lift. These features contribute to a high-performance valve job, outperforming stock Vortec heads in airflow at 0.500 inch lift, with intake flow at 232 cfm and exhaust flow at 138 cfm. Produced for Summit Racing, these Vortec cylinder heads are a direct replacement for many Small Block Chevy applications, offering a significant upgrade for performance enthusiasts seeking to maximize their engine's potential. The heads are manufactured with screw-in studs and a Vortec intake pattern.

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

BrandSummit
Part NumberSUM-151124
CategoryEngines and Components

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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

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