Specialty Parts for the Traditional Ford Enthusiast
  • Big Bore Stainless fuel line 3x2 - Small Block Chevy - polished

    Fuel Lines


    • Polished fuel line for Small Block Chevy
    • Fits Offenhauser and Edelbrock intakes at 5-1/2” carb spacing
    • Big Bore 5/16in CNC-bent stainless lines
    • Fuel block angle aligns with valve covers
    • Ford Nut style compression fittings included
    • Classic 3-into-1 shape - keeps everything on the engine
    • 1/4NPT threads at both ends of fuel block - fittings available from Stromberg!

    Our classic stainless steel 3-into-1 fuel line (Big Bore 5/16in OD) for Small Block Chevy 3x2 intakes, combines super-clean looks with simple TwoStep installation, and this one is polished - perfect for your chrome 97s.

    Designed and manufactured exclusively by Stromberg Carburetor, TwoStep Big Bore fuel lines are supplied ready to install, complete with special 5/16in Ford Nut style compression fittings into the carburetor. Check out the features!

    Set at 5-1/2in carb spacing to fit Offenhauser and Edelbrock SBC intakes, this kit uses CNC-bent 5/16in OD 304 stainless steel lines with leak-free, 'invisible' furnace brazed joints. The round-bar fuel block sits down close to the manifold, matching the 4 degree Chevy intake angle to align visually with the valve covers. For maximum versatility, it has 1/4NPT threads at both ends with machined 11/16in AF flats so fittings can be tightened safely without damaging the line.

    To help hot rodders complete the fuel line installation, a matching range of chromed 1/4NPT brass fittings is also available from Stromberg. Retaining the traditional hot rod look, they make it so much easier to get fuel into the block and mount a liquid-filled fuel pressure gauge. NPT fittings illustrated are not included with this kit. Please order separately.

    9178K-C 1/4NPT 90deg elbow (for fuel pressure gauge)
    9179K-C 1/4NPT to 1/8NPT bush (for fuel pressure gauge)
    9180K-C 1/4NPT hard line compression adapter (for 5/16in hard line)
    9181K-C 1/4NPT hex head plug
    9182K- 1/4NPT hose fitting

    Note: Use 9564K-BIG-C Stromberg S-jets
    Stromberg Big Bore fuel lines must be used with Stromberg 9564K-BIG S-jet inlet valves. Fitted as standard on Stromberg BIG 97s, they are specially designed to take 5/16in OD stainless steel line. If you have regular Stromberg 97 carburetors, you MUST update to 9564K-BIG S-jets.

    Every Stromberg TwoStep Fuel Line kit comes with full instructions, and further help with selection, installation and tuning is available at our Tech Center.