Intake Manifolds - Big Block Chevy Rect. Port

BBC Stealth Intake Manifold 396ci-502ci Rectangle Port

• High Rise/Dual Plane Design 
• 4150 Style Square Bore Mounting Flange 
• Machined for Standard Deck Blocks 
• Power band: Idle-6800 RPM 
• Height: Front 4.75", Rear 5.75" 
• Port Size: 2.30” height 1.59" width
• Weiand Nostalgia Series Intake Manifold

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 Black 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 40years. 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.
• Black painted 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 Machine 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 40years. 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 wehave 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 machined polished manifolds are rough polished to a remove some major casting marks but are NOT an mirror polish type finish (see photos).
• 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 rangemost often used in performance boating. This intake is patterned after themost respected intake in the marine industry the HP500 carbureted intakemanifold. With quite possibly more victories than any single other intakeon the market, you know you're on the winning track. This intake featuresone of the fasted torque curves anywhere and all power boaters know torque iswhat makes the difference. If you're looking for the most for you moneyyou'll demand the Hardin "XS" Xtreme Intake.

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

DualDistributor Hold Downs
Sometimes the standard single distributor hold down is not enough. so wehave provided dual distributor hold downs on all Hardin Marine intake manifolds.

FourCorner Water Ports
All Hardin Marine performance manifolds feature two extra water ports at therear of the manifold, a feature normally only found in manifolds costinghundreds more. Some enthusiasts have found that plumbing a line betweenthese two rear ports can reduce engine overheating. Many racers also findthese ports to be an advantageous special feature for plumbing specialadditional 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 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.

RPM Range: 1500 to 6500

Big Block Chevy Rectangular Port Polished RPM Air-Gap

The Original. Our proven, race-wining Air-Gap design in a dual-planemanifold. Designed for Chevrolet V-8s, the award- winning RPM Air-Gapincorporates the same race-winning technology that's used on our competitionintakes. The air-gap design features an open air space that separates therunners from the hot engine oil resulting in a cooler, denser charge for morepower. Includes rear water outlets, two distributor clamp locations and nitrousbosses.

RPM Range: 1500 to 6500

Big Block Chevy Rectangular Port RPM Air-Gap

The Original. Our proven, race-wining Air-Gap design in a dual-planemanifold. Designed for Chevrolet V-8s, the award- winning RPM Air-Gapincorporates the same race-winning technology that's used on our competitionintakes. The air-gap design features an open air space that separates therunners from the hot engine oil resulting in a cooler, denser charge for morepower. Includes rear water outlets, two distributor clamp locations and nitrousbosses.

RPM Range: 1500 to 6500

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.