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Edelbrock part #21011 Performer intake manifold is designed for street 1955-86 small-block Chevys. Edelbrock's Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent throttle response from off-idle through 5500rpm. Not for 1987 and later cast iron or Chevy Bowtie heads. Will fit 1987 and later stock aluminum heads. This manifold offers a polished finish for a brilliant shine and classic look.
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 www.P65warnings.ca.gov.
Installation Notes
Manifold ht: A-3.50", B-4.60"; Carb pad height: 4.05"; Carb recommendations: OEM 4-Bbl, Use choke rod #9171, bracket #8031 or #8036 for 1972-78. Edelbrock AVS2 or Performer Series 500-650 cfm.; Port exit dimensions: 1.14" x 1.88"; 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 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.; Edelbrock choke plate #8901 included