#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.

• Dual Plane 180º Design - Provides outstanding power from idle to 5,500 rpm. Dyno tested and proven.

• Nitrous Bosses - Bosses optimally positioned for maximum power.

• Permanent Mold Cast of 356 Aluminum - Standard.

• Square Bore Carb Adapter - Included with manifold.

• Fully Show Polished - Power+Plus show polished manifolds sell for less than you would have to pay for just the polish job.

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.  

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

Available in satin or show polished.

Now available with Dominator (Holley 4500) carburetor flange. Dual Distributor Holddowns. Bosses for nitrous or injectors. Four corner water ports. Available with show polished or satin (unpolished) finish. Priced over $100 less than many similar competitive single plane intake manifolds. Fits big block Chevy rectangular port cylinder heads on standard deck block.

Designed for use on up to 502 c.i.d. engines.

Note: This manifold is not legal for sale or use on any pollution controlled motor vehicle.

Available late summer 2004.