Chrysler 318/360 V8 PERFORMER RPM 340/360 (1500-6500 rpm) Designed for 340-360 c.i.d. Chrysler V8s and 318 c.i.d. engines with 340-360 cylinder heads. Latest technology in dual-plane design results in both excellent low-rpm torque and outstanding high-rpm horsepower. Recommended for high-performance street, strip and fresh water marine applications. Accepts 1975 and earlier waterneck only. Will not accept stock Thermo-Quad carburetor. Will not fit 1992 and later Magnum engines. Match with Performer heads #60779 for maximum performance. Carburetor Recommendations: Edelbrock Thunder Series AVS or Performer Series carb, 650-800 cfm, use our #1481 or #1843 Throttle/Transmission Lever Ki. Installation Notes: Recommended intake gasket: Edelbrock #7276, Fel-Pro #1213, Chrysler #4397642 (or equivalent) for 340 & 360. Manifold height: A-4.9", B-5.8" see A/B Measurements. Port exit dimensions: 1.01" x 2.17". 1979 & later rotary A/C compressor will not clear waterneck.