The Edelbrock Performer 2-O #21613 intake manifold is designed for street 396-502 c.i.d. big-block Chevy V8's using general duty oval-port cylinder heads. Will not fit under hood of Corvette without hood modifications. Will not fit “tall block” V8's. May be used with OEM or aftermarket carbs. Will fit 1965-90 oval port heads. The Edelbrock Performer 2-0 #21613 intake manifold is a dual-plane, low-rise intake manifold with a 180? firing order and patented runner design that you won't find in other brands. This patented design greatly improves torque over a wide rpm range for excellent throttle response, especially off-idle through the mid-range. The Performers are ideal for passenger cars, trucks, 4x4s, tow vehicles and RVs. The Edelbrock Performer 2-O #21613 also features a durable black powder coated finish for long lasting protection and a distinctive look. For the ultimate "Made in USA" quality, every Edelbrock intake manifold is cast and machined in the USA.
Installation Notes:
• Recommended intake gasket: Edelbrock #7203.
• Use Edelbrock #8028 waterneck adapter for 1986 and later.
• Edelbrock choke plate #8961 included.
• Manifold height: A-4.300", B-5.400"
• Carb pad height: 4.85"
• Port exit dimensions: 1.70"w x 1.68"
• Works with OEM Q-jet or Edelbrock square bore carb with supplied adaptor
• Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant #1076, DO NOT USE END SEALS GASKETS.
• Hardened washers Must be used with intake bolts to ensure proper torque and prevent galling of the aluminum.