Performer Air-Gap Intake Manifold for 1987-95 Small-Block Chevy

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Edelbrock Part # 2604 Performer Air-Gap intake manifold is designed for 1987-95 cast iron heads with canted center bolt holes small-block Chevys. This design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power. High-velocity runners deliver excellent throttle response throughout the power band. The great looks of the Performer Air-Gap along with the solid idle to 5500 rpm performance makes this an ideal choice for street rods and street machines. Fits spread-bore or square-bore carburetors. Will not fit under stock Corvette hood.

Documents & Installation Notes


Availability Available
Application Application Specific
UPC 00085347026043
Gasket Or Seal Included No
Availability Note Available to Order
Warranty 12 Months
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • Manifold ht: A-3.72", B-4.92" (.27" taller than # 2101)
  • Carb pad height: 4.32"
  • Carb recommendations: Edelbrock AVS2 or Performer Series 500-650 cfm. Use Bracket # 8031 or # 8036 for 1972-78.
  • Port exit dimensions: 1.14" x 1.88"
  • Recommended intake gasket: GM # 10163409
  • Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant # 1076, DO NOT USE END SEALS GASKETS.
  • Sealant must be used on intake bolt threads if the threads extend into lifter valley or coolant passage.
  • NPT/Pipe thread fittings require the use of Teflon tape or paste on threads to ensure proper seal.
  • DO NOT OVERTIGHTEN NPT/Pipe fittings, this may cause the aluminum to crack around the fitting boss. NPT/Pipe thread is a tapered thread.
  • Hardened washers Must be used with intake bolts to ensure proper torque and prevent galling of the aluminum.
  • Will not fir under stock Corvette hood
  • Even though manifolds are compatible with EGR systems, this does not mean they are legal for use on emissions controlled vehicles. Check local laws for legality.
  • Proper installation is the responsibility of the installer. Improper installation will void your warranty and may result in poor performance and engine or vehicle damage.
Center Maximum Height 4.320 in
CNC Ported No
Finish Satin
Front Maximum Height 3.720 in
Material Aluminum
Rear Maximum Height 4.920 in
Single Or Dual Plane Type Dual Plane