Professional 53001 Cyclone intake manifold.
esigned for street 1965-1990 396-502 cubic inch Chevy big block engines with oval port cylinder heads.
Recommend 600 cfm carb for low rpm use or 750 cfm carb for sport use or towing over 10,000 lbs.
Square bore carburetors such as Holley, Edelbrock, Carter or spread bore carbs like Quadrajet can be used.
Great low end torque for daily drivers or towing and 4x4's with large diameter tires.
Pressure tested and made with a metal permanent mold.
Permanent molds provide a tighter grain casting thereby reducing the occurrence of porosity which mars the polished finish.
Idle - 6000 RPM Range.
No EGR provisions.
Measures 5.75" tall at it's highest point.
Port sizes of 2.05" tall and 1.82" wide.
TECH NOTE: 50 state legal on 1972 and older passenger vehicles and 1983 and older trucks.
TECH NOTE: Will not fit "tall block engines".
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