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Professional Products - Power+Plus

Power+Plus Features/Include:

  • Street Molds (cast of aluminum in heat treated steel molds, not sand )
  • Show Polished Finish
  • Dead Accurate Port Polishing
  • Outstanding Performance
  • 100% Pressure Tested
    Bonus features and benefits not found on competing manifolds all at a lower price than any equivalent manifold!
  • Carb Adapter (CYCLONE only)
  • Adapter Bushings (exc. Vortec)
   Professional Products Power+Plus
 Small Block Chevy V8

Intake Manifold General Description:
 click here for more info and pictures (opens in new window)
 
Cyclone (Idle to 5,500 rpm)
The Professional Products Power+Plus Cyclone manifolds are low rise, dual plane models. These are excellent street manifolds and will provide increased power and torque over a wide rpm range, typically from idle to 5,500 rpm. They also feature excellent throttle response. These manifolds are available in both non-EGR and EGR* versions and the Cyclone models are street legal when used with the correct carburetor and application.

Crosswind (1,500-6,500 rpm)
The CrossWind models are all based on basic Typhoon designs and offer all the same benefits and design features found in similar CrossWind models. However the CrossWinds feature a lowered valley cover with an open area under the plenum that allows a free flow of air and also isolates the hot oil chamber from the plenum. This creates a cooling effect on the intake charge which provides additional power and torque in the 1,500 to 6,500 rpm range.

Typhoon (1,500-6,500 rpm)
The Power+Plus Typhoon manifolds are a high rise dual plane intake. These manifolds typically perform best in the 1,500 to 6,500 rpm range and also have excellent throttle response. These manifolds have larger plenums and runners which match the higher lift cams and free flowing exhaust found on many high performance street machines. Not intended for emission equipped engines.

Hurricane (3,500-8,000 rpm)
These are single plane, high rise manifolds designed for all out racing applications. Our small block Hurricane has been proven in dyno tests to be the best overall performing manifold of this type. The Hurricane is one of the best performing manifolds of this type.
 
Polished: 52000 ($149)
Satin: 52001 ($115)
Type: CYCLONE (non-EGR)
Fits: 1957-’95 Small Block Chevy V8*

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 manifold and is showing up on many performance street machines and street rods.

RPM Range: idle to 5500

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: 52006 ($159)
Satin: 52007 ($125)
Type: CYCLONE (Vortec)
Fits: Small Block Chevy w/1996+later Vortec (L31) Heads

This manifold is based on our most popular manifold, the Performance Street #52000/52001. It is designed to fit engine swaps using the 1996 and later Vortec (Gen 1+) cast iron heads or the Edelbrock E-Tec aluminum heads. These cylinder heads are very popular in street rods, engine swaps, or the industrial market. This manifold can be used on any Chevy V-8 engine utilizing the late Vortec head. This manifold has provision for external water bypass. It also features four corner water outlets, dual distributor holddowns, includes a square bore carb adapter and gasket, and will work with a late model style water neck, alternator, HEI and air conditioning brackets. Will also fit 1996 and later Vortec engines.

RPM Range: idle to 5500

Note: This manifold is not legal for sale or use on any pollution controlled motor vehicles.
 
 
Polished: 52008 ($169)
Satin: 52009 ($135)
Type: CYCLONE (EGR)
Fits: 1957-’95 Small Block Chevy V8

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 provides 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.

RPM Range: idle to 5500

Note: The 52008/52009 manifold is a stock replacement/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

* 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: 52010 ($189)
Satin: 52011 ($139)
Type: CYCLONE+Plus (Non-EGR)
Fits: 1957-’95 Small Block Chevy V8 (23° Heads)*
(Gaskets & Stainless Hardware included see description below)

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 important 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.

RPM Range: idle to 5500

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

* 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: 52020 ($169)
Satin: 52021 ($125)
Type: TYPHOON
Fits: 1957-’95 Small Block Chevy V8 (23° Heads)*

The Power+Plus Typhoon Manifold is a high performance 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 700800 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.

RPM Range: 1500-6500

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

* 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: 52025 ($209)
Satin 52026 ($159)
Type: CROSSWIND for 23° Heads
Fits: 1957-’95 Small Block Chevy V8 (23° Heads)*

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 producing 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.

RPM Range: 1500-6500

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

* 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: 52027 ($215)
Satin: 52028 ($165)
Type: CROSSWIND (Vortec)
Fits: Small Block Chevy V8 Vortec

The Power+Plus CrossWind for the Vortec features the same plenum and runner design as our popular 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.

RPM Range: 1500-6500

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicle.
 
 
Polished: 52030 ($195)
Satin: 52031 ($145)
Type: HURRICANE
Fits: 1957-’95 Small Block Chevy V8 (23° Heads)*

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 substituted for a thermostat for racing use. The Power+Plus Hurricane ports are very specifically positioned to provide an optimum starting point for custom 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 optimum results. While this manifold is designed to be port matched for racing, if it is used in a non-racing application 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.

RPM Range: 3000-7500

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

* 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: 52032 ($215)
Satin: 52033 ($165)
Type: HURRICANE Vortec
Fits: Small Block Chevy V8 Vortec

Patterned after our outstanding Hurricane for conventional 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.

RPM Range: 3000-7500

Note: These manifolds are not legal for sale or use on any pollution controlled motor vehicle.
 
 
 
 
 
 
 
Sales/Tech Line: (603) 378-0090
Email: tech@flatlanderracing.com

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