CFE SBX "Small - Block - Experimental"

Since 1991 CFE has been developing an experimental small block Chevy head in cooperation with top engine builders from around the world. The CFE SBX head as it was appropriately named was designed to shatter the existing power limitations and maximize the amount of horsepower obtainable by a naturally aspirated small block chevy. Revolutionary in design the CFE SBX cylinder head easily produced more than 1000 horsepower on a 358 cubic inch engine. Dominating Pro Stock Truck and setting national records for E.T. and MPH, the CFE SBX head would be forever cemented into the record books as both the quickest and the fastest small block Chevy head ever produced.

Discounting the demise of the Pro Stock Truck program, CFE's development effort towards the SBX project continued. Nitrous, Super Charged and Turbo Charged versions have been added to the CFE SBX lineup, making the CFE SBX series of racing heads the most extensible and powerful lineup of racing heads available for any small block regardless of the application.

The new CFE SBX lineup sports many improvements and features that were previousley inavailable including a symmetrical-intake-port-layout that favors two carburetors and allows the new CFE SBX racing heads to be used on a standard small block with conventional lifter bore locations. This negates the need for custom blocks and special cam cores. Also incorporated into the new CFE SBX lineup is a greatly improved rocker bar platform, structurally engineered to handle abusive environments and increase valve train stability. An extensive set of power proven intake and exhaust valve combinations have been added including a 2.250 by 1.600 arrangement for large bore applications. The CFE SBX series of racing heads are available in either Pro or Sportsman trim, allowing the racer and/or engine builder to choose the price performance level that fits their racing program best. All CFE SBX racing heads regardless of trim level includes CFE's Signature application specific cnc porting, world class craftsmanship and industry leading port-to-port consistency.

If domination is what your after and crushing your competition makes your day, adding a set of CFE SBX heads to your arsenal will transform you into a formidable opponent. Start your reign of power today. For more information call us today at 586.773.6310.

CFE SBX Details:

The standard CFE SBX is based on the original GM splayed valve small block Chevrolet cylinder head. It requires a splayed cam core and can be used on a conventional SBC block with no custom lifter machining required. The intake port layout is fully symmetrical and as a result, cylinder to cylinder airflow, timing and fuel requirements are equal to one another making for a more powerful and efficient engine. The symmetrical exhaust port layout eliminates the Siamese exhaust-port hot spot encountered with conventional SBC heads. Extra material cast onto the top of the SBX makes for a stable rocker stand platform to eliminate flex, fatigue and ultimately failure seen from other castings exposed to today’s high spring pressures. An extra thick deck surface provides durability under high cylinder pressure and an excellent head gasket sealing surface.

CFE SBX Base Programs:

• 11 Degree normally aspirated (40cc combustion chambers)
• 11 Degree turbo specials (69cc )
• 15 Degree nitrous specials (68cc)
• (Note: finished combustion chamber size will vary depending on multiple factors such as bore diameter and valve dimensions.)

CFE SBX Features:

• CNC port programs available to suit a wide array of applications and displacements from 260 to over 480 cubic inches.
• Choice of alloy or ductile iron seats
• 11/32” guides come standard (5/16” are available upon request)
• Up to 2.200” installed height for more lift!
• Assembled heads come standard with titanium valves (severe duty steel available as an option)
• Maximum intake valve diameter is 2.250” for large cubic inch or high RPM engines
• Alloy valve guides are standard. Steel exhaust guides are available for nitrous and turbo heads.

CFE SBX Requirements:

• A fabricated or sheet metal intake manifold is required for the SBX
• Rocker arm kits are available from Jesel and T & D
• The CFE SBX features its’ own exhaust flange pattern. Header flange plates are available from Specialty Product Design (SPD)
• The CFE SBX uses a splayed valve Chevy valve cover, available from various aftermarket sources.

Jesel Part Numbers

• 11 Degree CFE SBX - KPS-901 or KPS-1099
• 15 Degree CFE SBX - KPS-SP1422

T&D Part Number

• 11 Degree CFE SBX - 2367