Description

American Motors 6 Cylinder

The Dual Port and “C” Series accept the carter or Holley standard bore 4 bbl carb. Carb size recommended for DP is from 390 CFM to 500 CFM; for “C” Series – 500 CFM and larger. Use Holley No. 8007 (390 CFM), Carter 9400, or Carter 9500 on Dual Port – REMOVE KICK DOWN ARM FOR LINKAGE CLEARANCE. This instillation adds more horsepower to your 6 cyl than any other single piece of performance equipment. Our universal linkage accessory kit (Part No 6230) may be necessary on later models. Manifold fits with any headers conforming to stock specs. FOR AUTOMATIC TRANS. INSTALLATIONS – ORDER KIT NO. 5999K.

Dual Port Series

“The patented Dual Port is our STREET PERFORMANCE/ECONOMY DESIGN. in the Mini’s, the primary section boosts the fuel mixture to nearly the “speed of sound”, about 3 times faster than normal velocity. This positively gives each cylinder a full fuel charge every time to smooth out the power stroke. When engine or driver demand cuts in the secondaries, a cold (over 30° colder) and dense mixture is sent down the secondary runner to be rammed into the combustion chamber by the sonic flow to the primary runner. This adds up to 15-30% more horsepower, quicker throttle response, extended RPM range, better gas mileage, Quicker starting, reduction to exhaust emissions.

Offenhauser 6257DP 1981-1995 Jeep/AMC 258 Dual Port Intake Manifold

This intake manifold has a passage that can be used for water heating or exhaust heating.