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Hooker BlackHeart Header Back Exhaust System

1968-1972 Nova/GM X-Body 3 inch Exhaust Systems - Aggressive to moderate sound

Part # 70501321-RHKR Be the first to write a review

Hooker BlackHeart Header Back Exhaust System

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8

Emissions

This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle.

See Emissions Details
GM X-Body (Chevy Nova, Pontiac Ventura, etc.) 3" Stainless steel exhaust system with stamped crossover, TIG welded Mufflers (for up to 450HP), and a single turn-down exit under each quarter panel. Although these systems have been specifically developed for direct fitment with HOOKERโ„ข LS swap components for these applications, they will provide equally beneficial fitment, function, and service life with other non-Hooker LS swap headers or non-LS engine-equipped X-bodies through modification of the system inlet tubes, or construction of new ones, by a competent fabricator.

Features:

  • 3" Diameter tubing exhaust system with stamped crossover, TIG welded mufflers, for up to 450HP; single turn-down exit under each quater panel

About Hooker BlackHeart

Shop the official site of Hooker BlackHeart and explore exhaust systems, engine swap kits, and mufflers for both import and domestic vehicles at Holley.com!

Application1968-1972 Nova/GM X-Body
Brand Hooker BlackHeart
Emission Code8
EngineGM Gen III/IV/IV (LS/LT)
Exhaust SeriesHooker BlackHeart
Material304 Stainless Steel
Product TypeExhaust System
Sound LevelAggressive / Moderate
System TypeHeader-back
Swap
Tube Diameter3 inch
Tubing Diameter (in)3
UPC090127735602
Part Number70501321-RHKR
8

This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle. Federal guidelines indicate that an engine swap is allowable if one or more of the following conditions apply:

  • If there is a reasonable basis for knowing that emissions are not adversely affected as described in the EPA Tampering Policy dated November 23rd, 2020
  • The resulting vehicle is identical (with regard to all emissions related parts, engine design parameters and engine calibrations) to a certified configuration of the same or newer model year as the vehicle chassis
  • The vehicle is a uncontrolled vehicle - Vehicles that were manufactured before emission control regulations took effect are called uncontrolled vehicles. Aftermarket parts regulations and anti-tampering laws do not apply to these vehicles
  • An EO legal engine swap kit is utilized (such as a GM EROD)
  • The vehicle is being used for Competition Use Only - Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

Consumers are responsible for complying with laws prohibiting tampering, and for ensuring that modified vehicles are operated in a manner that complies with applicable laws.

Motor vehicle emissions standards are intended to help achieve and maintain air quality goals that benefit human health and the environment. The U.S. Environmental Protection Agency, the California Air Resources Board, Environment Canada, and other regulatory agencies prohibit the operation of vehicles on public roads that violate applicable emissions standards. The alteration of certified production vehicles to modify, remove, or render inoperable emissions control hardware or software, known as "tampering" is prohibited by the U.S. Clean Air Act and other laws. Tampering with motor vehicles emissions control systems is punishable by substantial monetary penalties.

Holley is committed to performance parts that allow enthusiasts to modify their vehicles and meet emission requirements. The information provided here is intended to provide general guidance of interest to most consumers. This guidance may not apply to all vehicles or all situations. It is up to each consumer to evaluate his or her own situation and take the steps necessary to comply with applicable laws. The websites listed below have more information about regulations and policies pertaining to motor vehicle emissions. You should also check the regulations applicable to your local area.

EPA Website
https://www.epa.gov/enforcement/epa-tampering-policy-epa-enforcement-policy-vehicle-and-engine-tampering-and-aftermarket

CARB Website
https://ww3.arb.ca.gov/msprog/aftermkt/aftermkt.htm

"This exhaust system is designed for use on vehicles equipped with a stock rear suspension system only. It is directly compatible only with Hooker Blackheart LS swap headers and transmission crossmembers designed for stock front sub-frame equipped vehicles; it is not compatible with Hooker Blackheart LS swap headers, or transmission crossmembers, that are designed for use with a Detroit Speed front subframe.
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    Some parts are not legal for use in California or other states with similar regulations.