Exhaust› Headers, Manifolds and Components

Dynatech

Stepped Primary Tube Headers

$629.99

SKU: 74021310

Out of Stock
In Stock
Ships by Oct 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

It features 3/8-inch laser-cut flanges for a leak-free seal and stepped, 1.75-inch to 1.875-inch primary tubes for increased power. The system includes 3-inch collectors with reducers for a 3-inch exhaust pipe.
Show original supplier description
The Dynatech MuscleMaxx Header Systems are engineered as a direct bolt-on upgrade for specific Small-Block Chevy applications, eliminating the need for modifications. These full-length headers are constructed from durable steel with a silver ceramic coating for enhanced longevity and aesthetics. They feature substantial 3/8-inch laser-cut flanges designed to ensure a leak-free seal, crucial for optimal performance. The primary tubes are stepped, ranging from 1-3/4 inches to 1-7/8 inches in diameter, combined with a long tube design to maximize horsepower and torque gains. The header ports are specifically sized to offer optimized flow, accommodating a wide array of cylinder heads, including popular Crate Engine options. For installation, these systems include headers, reducers, gaskets, bolts, and hardware, with 4-bolt, 3-inch collectors and included 3-inch reducers. This particular system is designed to fit 1967-69 Camaros and 1968-74 Novas equipped with Small-Block Chevy engines. The low-profile collector connections are intended to provide maximum ground clearance during operation.

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

BrandDynatech
Part Number74021310
CategoryExhaust
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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

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