Edelbrock 5425 - C-26 Dual-Quad Manifold, Chevrolet Small Block, 55-86
Edelbrock Part # 5425 C-26 Dual-Quad intake manifold is for 1955-86 262-400 c.i.d. S/B Chevys. This dual-quad has a low profile for hood clearance on most vehicles. Air-conditioning bosses and front oil filler tube boss included. Stock alternator brackets do not fit Carb center to carb center: 6-7/16". Accepts oil fill tube and breather #4803. Use with Performer-Plus cam #2103 for low-end torque or Torker-Plus cam/kit #5002 for top-end power.
Designed for 1500 to 5500 RPM performance
Low profile for hood clearance on most vehicles
Air-conditioning/front oil tube bosses included
Stock alternator brackets do not fit
Use Edelbrock fuel line kit #8088 with Edelbrock carburetors
Carburetor center-to-center dimensions = 6-7/16 inch
Use Edelbrock linkage kit #7094 with Edelbrock carburetors
Carburetor recommendations: EdelbrockAVS2 Series # 1903 and # 1904 500 cfm.
Port exit dimensions: 1.18" x 1.90"
Recommended intake gasket: Edelbrock # 7201.
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 a 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.
H.E.I. will fit
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.
