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PYPES DOF10S - PYPES Downpipes

PYPES DOF10S - PYPES Downpipes
PYPES DOF10S - PYPES Downpipes

JEGS Part Number: 958-DOF10S

1964-77 Oldsmobile Cutlass & 442 Downpipes
  • Oldsmobile V8
  • 2.5'' Diameter
  • With Flanges

    PYPES Downpipes

    PYPES Downpipes are designed to connect a header-back exhaust system to the factory manifolds. Expect 5-8 extra horsepower because of the 2.5" diameter and smooth mandrel bends over the stock downpipes. Made from 16-gauge mandrel bent 409 stainless steel to offer excellent flow and prevent corrosion. Sold in pairs. Includes flanges unless specified.


    Outside Diameter (in.)
    Muffler Series
    Tip Included
    Hardware Included
    409 SS
    Gaskets Included
    Catalytic Converter Included
    Sold as a pair
    Tubing Finish
    Tubing Material
    Stainless steel
    Manufacturer's Part Number:
    Rated 5 out of 5 by from Work perfect for my olds 350 I install the PYPES Downpipes on my 1970 Cutlass Supreme about a month ago . They fit perfect . My car/engine (350 small block olds) is all stock . The downpipes have 2 1/4 in flanges and the 350 exhaust manifold on the passenger side has a 2 1/4 in flange . And the driver side 350 exhaust manifold has 2 in flange . But it bolted up gust fine . I have read some reviews that said it did not bolt up to small block olds manifolds . But it worked for me no leaks fit great . If you did have a problem with the driver side manifolds 2 in flange you could gust grind down the flange on the downpipe a little bit . The downpipe flanges are really thick so you could remove enough material to get it to fit . I did not have to grind anything they fit . I have driven the car about a full tank of gas with no problems .
    Date published: 2016-04-05
    • 2016-05-25T14:37CST
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