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Part Number: 3992NR



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1977 -1981 Oldsmobile small block 307, 330, 350,and 403 high performance exhaust manifolds.







The high performance exhaust manifold that GM never produced. This is the high performance solution instead of headers for Oldsmobile small block V8 engines.These manifolds were conformed from the 1970 455 W30 manifold and custom fit to the small block for all proper clearances. They will fit 1964 - 1988 small block Oldsmobile 307, 330, 350, 403. Will fit all GM A body cars, G body cars, F body Trans Am with a 403 and 1971 and newer B and C body cars.

Features:


    Large 2 1/4" outlet on the driver side manifold (original stock manifold is 2")
    No crossover pipe hole to plug on the passenger side
    Divided center port design
    Larger design for better air flow
    Direct bolt on with no modifications needed
MSRP $436.99
YEARONE Price: $399.93
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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

WARNING: This product can expose you to chemicals including but not limited to lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride and/or 4, 4'-methylenebis (2-chloroaniline) which are known to the state of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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