Hooker Headers 8525HKR Exhaust Manifolds for Small Block Chevy 262-400 V8 (Gen I) [Raw/Natural]
520-8525HKR
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![8525HKR Exhaust Manifolds for Small Block Chevy 262-400 V8 (Gen I) [Raw/Natural]](http://www.jegs.com/images/photos/500/520/520-8525hkr.jpg "8525HKR Exhaust Manifolds for Small Block Chevy 262-400 V8 (Gen I) [Raw/Natural]")
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Rectangular Port
Hooker 8525HKR Features:
- OEM-style stock replacement also fits a variety of engine swap applications
- A larger 1 5/8 in. cross-sectional area, as well as a 2 1/2 in. outlet, allow your engine to breathe better, increasing horsepower and torque
- Cast iron construction provides added resistance to cracking or premature failure
- Pre-welded, standard 2-bolt outlet flanges make downpipe installation quick and easy
Notes:
- Will not fit GM Gen I F-Body
- Custom downpipes will need to be fabricated, weld flanges are included to aid fitment
Emissions: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured Federally Certified vehicles
- 1967 and older Foreign manufactured vehicle
- The following vehicles are considered Racing Use Only Vehicles:
Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
FAQ:
Are Shorty headers better than manifolds?
- Shorty headers, like the Hooker 8525HKR, offer improved exhaust flow over stock manifolds, enhancing engine performance in terms of power and torque. They provide a balance between ease of installation and performance gains.
What is the difference between SBC exhaust manifolds and headers?
- SBC exhaust manifolds are factory-fitted, channeling exhaust gases out of the cylinders. Headers, such as Hooker SBC manifolds, offer improved flow, reducing backpressure, and maximizing engine efficiency and power.
Are stock manifolds quieter or louder than aftermarket headers?
- Stock manifolds tend to be quieter than aftermarket headers. While headers, like the Hooker 8525HKR, can amplify exhaust note due to increased flow, they also contribute to improved performance, providing a more aggressive exhaust tone.
What are the disadvantages of exhaust manifolds?
- Exhaust manifolds often have restricted flow compared to headers, causing increased backpressure, which can limit engine power. Additionally, their design may not optimize performance gains like aftermarket Hooker Headers logo products.
Specifications:
Will part # 8525 HKR fit a 68 Nova 327â°
Can they be used on the gm zz6 crate engine
Will these clear the steering box on a 55-57 Chevy chassis?
Are these manifolds made in USA?
is the measurment on passenger side rear exit the same as the factory style manifold? I was trying to install factory set on a street rod. exhaust flange sticks out to far. It hits the frame.
Will these work with round port heads?
So they mention using these instead of replacing stock manifolds, but these don't bolt directly to the stock exhaust right?
Will these work on G-body with A/C?
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.