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5974 – Ford 429/460 Cobra 71 & Later Dual Quad Top competition manifold A whole series of COMPETITION Manifolds designed to suit your particular needs. Tested and proven to outperform other so-called top performers, these combinations appeal to not only the professional, but also to those who demand the finest performance products that can be…
Recent dyno and road tests have proven the Dual Port can give these Toyotas as much as a 20% HP boost over the stock manifold without sacrificing fuel economy. MPG gain was as much as 15%.
5997-DP Application: 1970-74 (also fits 18RC) (Stock 2 STG Carb)
1971 – ’81 – std Bore 4 bbl
Fits Engines: 199-232- & early 258
Buick and Jeep V-6, Uses standard 4bbl carb from 400 CFM to 600 CFM depending on whether it’s for street or competition.
6035-DP Buick/Jeep, 225 C.I., 1964-72
6035-DP Buick/Olds/Pontiac, 231 C.I., 1975 (will not fit HEI)
Offenhauser 6053 DP Manifold for Courier – Mazda. Dual Port 2 B. 1800 cu in.
V-8 Dual Port Single Quad Hi Rise Manifold. AMC all V-8 1967-69 Spread Bore Qjet Carb
Manifolds below will accept 1973 and later emission control devices by using the special Offenhauser adapter kit
at a nominal extra charge. Be sure and specify type of vehicle when ordering.
Jeep Applications require Jeep kit part #6094
Like the #5619 carb adapter only with an open center. Drilled to accept either Holley or AFB type four barrel carburetors to same base manifold. 2″ Universal. Offy part # 6058
Chevy LUV Pickup Manifold 1972-75 (Stock 2 STG Carb)
