Big Block Chevy "XS" Xtreme 4500 Rectangular Port Intake Manifold - Polished

This manifold shares all of the same great performance features as our standard "XS" Xtreme Intake with the addition of a 4500 series dominator carburetor mounting flange. The ability to use this manifold with the larger carburetor provision makes it the only true choice for larger cubic inch applications.

• Now available with Dominator (Holley 4500) carburetor flange
• Dual Distributor Hold Downs
• Nitrous Bosses
• Four corner water ports
• Available show polished or satin (unpolished) finish
• Priced over $100 less than many similar competitive single plane intake manifolds

Big Block Chevy "XS" Xtreme 4500 Rectangular Port Intake Manifold - Satin Finish

This manifold shares all of the same great performance features as our standard "XS" Xtreme Intake with the addition of a 4500 series dominator carburetor mounting flange. The ability to use this manifold with the larger carburetor provision makes it the only true choice for larger cubic inch applications.

• Now available with Dominator (Holley 4500) carburetor flange
• Dual Distributor Hold Downs
• Nitrous Bosses
• Four corner water ports
• Available show polished or satin (unpolished) finish
• Priced over $100 less than many similar competitive single plane intake manifolds

Big Block Chevy Tall Deck Intake Manifold Spacers

These precision manufactured intake manifold spacers are far superior to cast versions. A perfectly true machined spacers is required when ever installing a Standard deck 9.800 style intake manifold on a 10.200 Tall deck big block chevy engine.

Note: Port configuration is designed around Dart BIG M specifications. Minor modifications can be required.

"XS" Xtreme Polished Single Plane Big Block Chevy Rectangular Port Intake Manifold

This design is very efficient and produces excellent power in the RPM range most often used in performance boating. This intake is patterned after the most respected intake in the marine industry the HP500 carbureted intake manifold. With quite possibly more victories than any single other intake on the market, you know you're on the winning track. This intake features one of the fasted torque curves anywhere and all power boaters know torque is what makes the difference. If you're looking for the most for you money you'll demand the Hardin "XS" Xtreme Intake.

At last you can buy an intake manifold specifically designed to meet the unique needs a performance boat demands from a company that knows what performance is. Hardin Marine has been building manifolds for over 40 years. At last you the performance boater can take advantage of the state of the art technology in each of these new manifolds. Here are just a few of the state of the art features that keep Hardin Marine Intakes leading the race.

Dual Distributor Hold Downs
Sometimes the standard single distributor hold down is not enough. so we have provided dual distributor hold downs on all Hardin Marine intake manifolds.

Four Corner Water Ports
All Hardin Marine performance manifolds feature two extra water ports at the rear of the manifold, a feature normally only found in manifolds costing hundreds more. Some enthusiasts have found that plumbing a line between these two rear ports can reduce engine overheating. Many racers also find these ports to be an advantageous special feature for plumbing special additional water lines.

Other Special Features

• All ports are very accurately positioned due to advanced casting techniques.
• All polished manifolds are meticulously hand polished to a show level finish.
• Just before packing, every tapped hole in each manifold is chased with a tap to clear out polishing residue and to assure the threads are not damaged.

"XS" Xtreme Satin Finish Single Plane Big Block Chevy Rectangular Port Intake Manifold

This design is very efficient and produces excellent power in the RPM range most often used in performance boating. This intake is patterned after the most respected intake in the marine industry the HP500 carbureted intake manifold. With quite possibly more victories than any single other intake on the market, you know you're on the winning track. This intake features one of the fasted torque curves anywhere and all power boaters know torque is what makes the difference. If you're looking for the most for you money you'll demand the Hardin "XS" Xtreme Intake.

At last you can buy an intake manifold specifically designed to meet the unique needs a performance boat demands from a company that knows what performance is. Hardin Marine has been building manifolds for over 40 years. At last you the performance boater can take advantage of the state of the art technology in each of these new manifolds. Here are just a few of the state of the art features that keep Hardin Marine Intakes leading the race.

Dual Distributor Hold Downs
Sometimes the standard single distributor hold down is not enough. so we have provided dual distributor hold downs on all Hardin Marine intake manifolds.

Four Corner Water Ports
All Hardin Marine performance manifolds feature two extra water ports at the rear of the manifold, a feature normally only found in manifolds costing hundreds more. Some enthusiasts have found that plumbing a line between these two rear ports can reduce engine overheating. Many racers also find these ports to be an advantageous special feature for plumbing special additional water lines.

Other Special Features

• All ports are very accurately positioned due to advanced casting techniques.
• All polished manifolds are meticulously hand polished to a show level finish.
• Just before packing, every tapped hole in each manifold is chased with a tap to clear out polishing residue and to assure the threads are not damaged.

Big Block Chevy Rectangular Polished Port Performer RPM

Now available from Edelbrock are the popular Performer RPM manifolds in a fabulous polished finish. Note: There are limited applications with more coming soon.

Big Block Chevy Rectangular Port Performer RPM

Performer RPM's are dual-plane, low-rise intakes with 180° firing order to produce incredible top-end horsepower while retaining good throttle response. Their larger plenums and runners match the free-flowing exhaust, high-lift cams and other modifications of a high output engine. They are intended for high-performance or competition engines that run up to 6500 rpm.

Big Block Chevy Rectangular Port Polished RPM Air-Gap

The Original. Our proven, race-wining Air-Gap design in a dual-plane manifold. Designed for Chevrolet V-8s, the award- winning RPM Air-Gap incorporates the same race-winning technology that's used on our competition intakes. The air-gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power. Includes rear water outlets, two distributor clamp locations and nitrous bosses.

Big Block Chevy Rectangular Port RPM Air-Gap

The Original. Our proven, race-wining Air-Gap design in a dual-plane manifold. Designed for Chevrolet V-8s, the award- winning RPM Air-Gap incorporates the same race-winning technology that's used on our competition intakes. The air-gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power. Includes rear water outlets, two distributor clamp locations and nitrous bosses.

Victor Jr. 454-R (3000-7500 RPM)

Designed for competition 396-502 Big Block Chevy's #2902 fits rectangular-port heads and #2904 fits large oval-port heads (1975-earlier) These intakes are designed to optimize the flow characteristics of an 850 CFM standard flange carburetor Features include extended runner dividers, smaller plenum chambers and unique runner design for max power from 3000 to 7500 RPM These manifolds are especially suited to 502 cid and smaller competition engines Testing has proven these manifolds superior to our competitors Victor Jr.454-R #2902 will fit Edelbrock Victor race heads #7760.

Dominator Carburetor Flange - Fits Std. deck (9.800") Rectangular Port, Merlin Brass Water Jacket

Your ultimate choice for single carburetor application used on the very popular HP 500 from Mercury. Dart intake manifolds incorporate sophisticated wet-flow technology developed successfully. They don't make "universal" manifolds. Every Dart intake is engineered for a specific cylinder head, block and carburetor combination. This means that they've optimized the port shape, the plenum volumes, and the runner angle for each application. In numerous dyno tests we've yet to witness any manifold with as flat a torque curve as these.

Standard Carburetor Flange - Fits Standard deck (9.800") Rectangular Port, Merlin Brass Water Jacket

Your ultimate choice for single carburetor application used on the very popular HP 500 from Mercury. Dart intake manifolds incorporate sophisticated wet-flow technology developed successfully. They don't make "universal" manifolds. Every Dart intake is engineered for a specific cylinder head, block and carburetor combination. This means that they've optimized the port shape, the plenum volumes, and the runner angle for each application. In numerous dyno tests we've yet to witness any manifold with as flat a torque curve as these.

Standard Carburetor Flange - Fits tall deck (10.200") Rectangular Port, Merlin Brass Water Jacket

Your ultimate choice for single carburetor application used on the very popular HP 500 from Mercury. Dart intake manifolds incorporate sophisticated wet-flow technology developed successfully. They don't make "universal" manifolds. Every Dart intake is engineered for a specific cylinder head, block and carburetor combination. This means that they've optimized the port shape, the plenum volumes, and the runner angle for each application. In numerous dyno tests we've yet to witness any manifold with as flat a torque curve as these.