BB Chevy Performance Street Manifold Non-EGR
#53000 - Show Polished #53001 - Satin Finish

The Power+Plus PS (Performance Street) 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

• Nitrous Bosses are provided on port runners

The Power+Plus Cyclone Manifold is a direct replacement manifold for the stock manifold on Chevy big block engines with general duty oval port heads. See note below for specifics.

This manifold will not fit under the hood of Corvettes without hood modifications. Will not fit "tall block" V8s. May be used with OEM or aftermarket carburetors.

For street applications use the stock Quadra-Jet carburetor. For Street Performance use a 650-750 cfm performance or double pumper carb and for Competition use a 700-850 cfm double pumper. Note that the Power+Plus Manifold kit includes a carb adapter plate and gasket to allow the use of square bore carburetors. Square bore carbs on this manifold are not legal for use on any emission controlled vehicle.

Use a Fel-Pro #1210 or #1212 intake gasket with this manifold.  

Note: This is a stock replacement/street legal part for 396, 402, 427, and 454 V8s with OEM 4-bbl carb; 1965-'72 (1973 non-CA) passenger cars and 1966- '83 trucks, Suburbans, and heavy vehicles; except stock equipped EGR.

Single Plane Racing Manifold For Big Block Chevy V8 (Standard Deck Height)
#53030 - Show Polished #53031 - Satin Finish

The Power+Plus HPR (High Performance Racing) is the ultimate big block single plane racing manifold. This manifold will perform with the best available at nearly half the price.

• Nitrous Bosses in port runners

• Four corner water outlets

• Dual distributor holddowns

This new manifold for Big Block Chevys is a worthy companion to our phenomenally successful single plane small block racing manifold.

Designed for serious performance big block applications, it features nitrous bosses, dual distributor holddowns, four corner water ports, and is intended for rectangular port cylinder heads. Runner size is effective for 468 to 540 cid engines. This manifold is also available in a special marine version, which utilizes brass liners in all water passages to eliminate corrosion. Both versions are available in satin or show polished finishes.  

Note: Use Fel-Pro intake gaskets #1275. Use an 800 cfm or larger 4150 square bore carburetor.

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