Professional Products Small Block Chevrolet Intake Manifolds

The 52000/52001 Power+Plus Cyclone Manifold is a direct replacement for the stock manifold on 1957-’95 Small Block Chevy non-EGR engines. Includes special adapter bushings to fit ’87-’95 engines. Use the stock Quadra-Jet carb or 500-650 cfm vacuum secondary carburetor. Kit includes adapter plate to permit use of certain square bore style carburetors. Power+Plus Manifolds are cast from steel molds, not from sand molds. Permanent molds provide a tighter grain casting thereby reducing the occurrence of porosity which can mar the polished finish. Additionally, each Power+Plus Manifold is 100% pressure tested for leaks to eliminate installation problems. This is our most popular mani- fold and is showing up on many performance street machines and street rods.

Note: The 52000/52001 manifold is a stock replacement/street legal part for 302, 327, and 350 V8s with OEM carb or Edelbrock #1400 carb; 1966-72 (1973 non-CA) passenger cars, 1966-83 trucks and Suburbans, except stock equipped EGR. Also stock replacement/street legal for 302, 327 and 350 V8s with 1987-95 heads with OEM 4-bbl carb, except stock equipped EGR. *Will not work on engines w/reverse flow heads as utilized on 1992-96 LT-1 Corvette, 1993-’97 LT-1 Chevy Camaro, Pontiac Firebird, Chevy Caprice, Impala and Buick Roadmaster.

Polished $215.99 Satin $166.99

The 52008/52009 (EGR) Power+Plus Cyclone Manifold is a direct replacement for the stock manifold on 1972-’86 GM Small Block Chevys with EGR and 1981-’86 GM Corporate 350 V8 engines with EGR. It is essentially the same design as the 52000/52001 except it incorporates a provision for EGR. This manifold features a dual distributor holddown provision, four corner water ports, adapter plate and gasket for square bore carb, and insert bushings which allow the manifold to fit on 1987-’95 cylinder heads. This manifold is an ideal street manifold and pro- vides street legal operation in the listed applications as well as improved power over a wide rpm range. Will accept late-model choke, waterneck, air-conditioning, alternator, and H.E.I. ignitions systems. This is a great all around street performance intake manifold.

Note: The 52008/52009 manifold is a stock replace- ment/street legal part for 1972-86 305, 350 and 400 V8s with OEM 4-bbl or Edelbrock #1400 carb; and 1981-86 GM corporate 350 V8 engines

Polished $225.23 Satin $177.49

This is our top-of-the-line medium profile street performance manifold. It is similar to our 52000/52001 Cyclone, although slightly taller, but with several impor- tant modifications. First, it has a square bore carb flange instead of a spread bore. The square bore flange permits direct bolt-on of all popular Holley, Edelbrock, Carter, and Demon carburetors. This manifold is also the only SB Chevy manifold available that features a built-in rear water crossover passage. This typically will provide for better overall water flow and cooler engine operating temperatures. It also features nitrous bosses, and rear water ports. This manifold is also supplied with a quality intake gasket set, 12-point stainless steel attachment bolts, stainless washers, and a full complement of aluminum pipe plugs to plug unused tapped holes. We even include a tube of Permatex Ultra-Black silicone sealer for use on the two ends of the manifold where it seals to the block. This manifold will typically produce more power than any similar competitive manifold due to larger ports and runners.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicles.

Polished $227.99 Satin $173.99

The Power+Plus Typhoon Manifold is a high perfor- mance dual plane, 180° street manifold designed to be used with Holley, Carter AFB, or Edelbrock square bore carbs. For street applications use 600-700 cfm vacuum secondary carbs. For high performance street, use 700- 800 cfm double pumper carburetors. This manifold produces power comparable to some single plane manifolds yet retains the throttle response and drive ability typical of a dual plane. This manifold also features cast-in nitrous bosses with water outlets at all four corners plus dual distributor holddowns. This manifold is .70-inches taller than the #52000 or #52001. It has a provision to add an oil fill tube. No provision for exhaust heated or stock style chokes. Accepts late model waterneck, A/C, alternator, and HEI. Will fit cast iron bow tie heads and ‘87-’95 cast iron or aluminum heads. Will not fit under a stock Vette hood.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicles.

The new CrossWind Manifold is a special version of the 52020/52021. While it is the exact same height, it features an open area under the plenum chamber. This provides for a flow of cooling air which keeps the temperature of the air/fuel charge lower thus produc- ing more power and torque. The interior plenum and port design are identical to the 52020/52021 and will provide somewhat better overall power than the 52020/52021 due to the special design.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicles.

Polished $279.95 Satin $209.99

The Power+Plus CrossWind for the Vortec features the same plenum and runner design as our popu- lar 52020/52021 and 52025/52026 manifolds. In this design the manifold is made wider to accommodate the Vortec design heads and also features the Vortec port configuration. The manifold also has a square bore carb pad to utilize the standard Holley, Carter and Edelbrock carburetors. This manifold is intended for use on up through ‘95 blocks using the 1996 and later Vortec (Gen 1+) heads or Edelbrock E-Tec heads. It can also be used on ‘96 and later Vortec engines with some minor modifications.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicle.

Polished $286.99 Satin $219.99

The Power+Plus Hurricane Manifold is a single plane 360° design that provides optimum power in the mid to upper rpm ranges. Use with any standard square bore performance carb. Features include nitrous bosses, dual distributor holddowns, four corner water ports, and more. Kit also includes special water flow divider which can be substi- tuted for a thermostat for racing use. The Power+Plus Hurricane ports are very specifically positioned to provide an optimum starting point for cus- tom porting. The ports are slightly smaller than Fel-Pro’s #1205 gasket. Ideal manifold for drag racing or short track use. Use a 1’’ (short track) or 2’’ (drag race) carb spacer for opti- mum results. While this manifold is designed to be port matched for racing, if it is used in a non-racing applica- tion no port matching is required. Manifold provides all standard bosses and tapped holes for street accessories. Fits standard port location 23° heads including cast iron Bowtie, Dart Iron Eagle, World, plus most aluminum aftermarket 23° heads.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicle.

Polished $259.99 Satin $192.99

Patterned after our outstanding Hurricane for conven- tional small block Chevys, this new manifold is suitable for use on Chevy V8 engines employing Vortec (Gen 1+) cast iron heads or the Edlebrock E-Tec aluminum heads. This is an ideal manifold for circle track racing and our Hurricane for conventional Chevy 23° heads is in wide use in many racing applications. Our Hurricane design has been proven on many dyno tests to match or outperform competitive manifolds on high horsepower competition racing engines. See page 12. You can spend more money for a single plane racing manifold for your small block Chevy, but you won’t get a better performing manifold than one from Power+Plus.

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicle.

Polished $286.99 Satin $218.99