Stromberg Big Bore Stainless Fuel Line 3×2 – Small Block Chevy – 9146-BIG


  • 5-1/2” carb spacing for Small Block Chevy
  • Fits Offenhauser and Edelbrock SBC intakes
  • Big Bore 5/16in CNC-bent stainless lines
  • Fuel block angle aligns with valve covers
  • Ford Nut 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!
  • Must use 9564K-BIG S-jet inlet valves (standard on Stromberg BIG 97)
  • Use with Stromberg 9246S or 9246PRO linkage

4 in stock

SKU: 9146-BIG Category:


Our classic stainless steel 3-into-1 fuel line (Big Bore 5/16in OD) for Small Block Chevy 3×2 intakes, combines super-clean looks with simple TwoStep installation. Designed and manufactured exclusively by Stromberg Carburetor, each kit is supplied ready to install, complete with special 5/16in Ford Nut 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 5/16” 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 complementary range of 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 1/4NPT 90deg elbow (for fuel pressure gauge)
9179K 1/4NPT to 1/8NPT bush (for fuel pressure gauge)
9180K 1/4NPT hard line compression adapter (for 5/16in hard line)
9181K 1/4NPT hex head plug
9182K 1/4NPT hose fitting

Note: Use 9564K-BIG 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.

Additional information

Weight 2 lbs
Dimensions 12 × 4 × 4 in