Power+Plus Manifolds for
Small Block Chevy V-8's

SB Chevy Performance Street Manifold Non-EGR
52000 - Show Polished $145 52001 - Satin Finish $115

Fits 1957 - '95 Engines

The Cyclone manifold is the ideal street manifold. It is street legal on a wide range of applications (see catalog for details) and provides significant increases in power and torque.

• Manifold includes adapter to use a square bore carb

• Features dual distributor holddowns

• Includes two pipe tapped rear water ports

Performance Street Manifold for Small Block Chevy w/ Vortec Heads (non-EGR)

#52006 - Show Polished #52007 - Satin Finish

The Cyclone manifold is the ideal street manifold for street rods or engine swaps using the popular 1996 and later Vortec (L31) cast iron heads.

• Manifold includes adapter to use a square bore carb.
• Features dual distributor holddowns
• Includes two pipe tapped rear water ports
• Fits Vortec blocks or 1995 & earlier blocks w/Vortec 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.

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

This manifold features:

• A dual distributor holddown provision,
• Four corner water ports,
• Adapter plate and gasket for square bore carb,
• Insert bushings which allow the manifold to fit on 1987-’95 cylinder heads.

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 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.

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.

SB Chevy High Performance Street (non-EGR)
#52010 - Show Polished #52011 - Satin Finish

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 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 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.

SB Chevy High Performance Street Manifold  (Non EGR)
52020- Show Polished $160 52021 - Satin Finish $125

Fits 1957 - '95 Engines

The Power+Plus Typhoon manifold is an outstanding performance street manifold that produces more power and torque than similar competitive manifolds yet sells for a lot less money.

• Features cast-in nitrous bosses

• Dual distributor holddown provision

• Includes two pipe tapped rear water ports

This manifold produces power comparable to some single plane manifolds yet retains the throttle response and drivability typical of a dual plane. It 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 bowtie 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.

SB Chevy High Performance Street
52025 - Show Polished $195 52026 - Satin Finish $150

Fits 1957 - '95 Engines

The Power+Plus CrossWind manifold is similar to the 52020/52021 above but features an open area under the plenum and port runners. This allows air to pass through this area cooling the intake charge which produces more power and torque.

• Features cast-in nitrous bosses

• Dual distributor holddown provision

• Includes two pipe tapped rear water ports

• Fits all '55 through '95 engines

The 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 due to the special design.

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

SB Chevy High Performance Street
52030 Polished $195   52031 Satin  $140

Fits 1957 - '95 Engines

This Power+Plus Hurricane manifold is the best performing manifold of this type that you can buy, regardless of cost. Yet the Power+Plus manifold is one of the least expensive manifolds of this type on the market.

• Features cast-in nitrous bosses

• Dual distributor holddown provision

• Includes two pipe tapped rear water ports

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.

• Single plane 360° design - Provides optimum power from 3500 - 7800 rpm. Dyno tested - outperforms similar Chevy Bowtie manifold.
• Nitrous Bosses - Bosses optimally positioned for maximum power.
• Ideal Port Position - Allows custom porting for maximum power.
• Five Water Outlet Ports - Five 1/2"-14 NPT ports
• Dual Distributor Holddown Provision - Standard
• Water Divider Insert - For racing applications without a thermostat, just drop in our supplied water divider insert. (Also available separately.)

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.

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 vehicles.