- This cylinder head is pending 50-state emission legal for 4.0L engines when used with factory Fuel Injection components.
- 1997-2006 Jeep Wrangler TJ
- 2004-2006 Jeep Wrangler Unlimited TJL
- 1991-1995 Jeep Wrangler YJ
- 1991-1998 Jeep Cherokee XJ
- 1993-1998 Jeep Grand Cherokee ZJ
- 1999-2004 Jeep Grand Cherokee WJ
- 1987-1990 Jeep Wagoneer XJ
This Edelbrock Performer Bare Cylinder Head is machined to accept either distributor or coil pack ignition. Ededlbrock cylinder head features better flowing intake/exhaust ports along with a modern combustion chamber design and back-cut and swirl polished valves. It retains the stock valve angle, push rod length and valve cover rail height for use with factory components and off the shelf accessories. It also features larger reinforced rocker bosses for improved strength at high RPM and Heli-Coil threaded inserts in the manifold bolt holes for added strength. A 3/4" deck throughout the head also promotes stiffness and durability.
This Performer Cylinder Head is designed as a bolt-on performance upgrade for 1987-2006 Jeeps with a 4.0L inline six cylinder engine. The Performer Jeep 4.0L is designed with 1991-2006 4.0L intake port locations and must be used with 1991-2006 intake manifold. The Performer Jeep 4.0L is designed with 1991-1998 4.0L exhaust port locations and must be used with 1991-1998 factory header or aftermarket exhaust header. This cylinder head will also fit 1976-1990 AMC 4.2L engines with no modification to the water jacket and the appropriate intake manifold and header combination.
- Combustion chamber volume: 55cc
- Intake runner volume: 144cc
- Exhaust runner volume: 77cc
- Intake valve diameter: 1.91"
- Exhaust valve diameter: 1.50"
- Valve stem diameter: 5/16"
- Valve guides: Manganese bronze
- Deck thickness: .750"
- Valve spring diameter: 1.26"
- Valve spring maximum lift: .540"
- Rocker stud: N/A
- Guideplate: N/A
- Pushrod diameter: N/A
- Valve angle: 10 (stock)
- Exhaust port location: Stock (1991-98)
- Spark plug fitment: 14mm x 3/4 reach, gasket seat
- (1) Edelbrock Performer Bare Cylinder Head for 4.0L Engines
1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006
|1993-1998||Jeep||Grand Cherokee ZJ|
|2004-2006||Jeep||Wrangler TJ Unlimited|
|1999-2004||Jeep||Grand Cherokee WJ|