Genuine Stromberg 97 – Vacuum Port

1. Just the same. But better than ever. A brand new genuine Stromberg 97 with a specially developed ‘ported vacuum’ fitting for your vacuum advance distributor. Available only from Stromberg Speed Parts.

‘Ported vacuum’ is taken from just above the throttle plate so it provides additional advance only at light load/part throttle conditions (cruise). Please check your distributor specification. Simple ported vacuum is not compatible with the 1949-53 Ford flathead Loadomatic distributor, which needs a unique carburetor. In part throttle/light load dyno tests, with the throttle position locked at 1800 rpm, connecting the vacuum port added 200 RPM and 3 to 4ft-lbs torque. The exhaust sound changed considerably, showing that the engine appreciated the extra timing, and throttle response was noticeably better. The Stromberg 97 ported vacuum base is also available separately - Part Number 9514-VP. Here are the highlights:

• Super-accurate pressure die-castings from new dies, CNC-machined for a blue-print parts fit. No oversize screw threads. No mystery parts from previous rebuilds. No problems.
• Early style cast iron base with stock size – not second-best oversize – throttle shaft. Parkerized and black lacquered just like they used to be.
• Brass ported vacuum fitting hidden in behind the kicker linkage - can be blanked off and plugged with set screw provided.
• Reinforced air horn casting with extra material around the float bowl lid to eliminate warping and leaks.
• Stock original (sea level) Stromberg jetting – 0.045 main jets and a Number 65 power valve.

• 162cfm out of the box (independently verified) measured at 1.5inch Hg (same as they measure 4-bbl carbs).
• New brass float, made in USA on original Stromberg dies.
• Specially developed S-Jet twin-ball inlet valve.
• Modern, high-tech, reinforced gaskets. Sorry, no leaks.
• Stainless steel linkage throughout. Our springs are stainless. So is the accelerator pump rod, the throttle linkage, choke plate, lever and more.
• Beautiful investment cast stainless steel throttle and accelerator pump levers.
• Correct pale chromate zinc treatment using the original Ford Service Bulletin process.
• Original-style riveted throttle and choke shafts.
• Extensive dyno and road tests provethat it exceeds original spec.
• Also available with cable choke and/or LZ-push throttle options – to special order.

Note: Original hand throttle parts are not included. If you need them, email us, as we can probably find you good used parts.

Please remember to set your timing with the ported vacuum temporarily disconnected and the carburetor port clamped.

Like any carburetor, the Genuine Stromberg 97 needs proper installation and tuning for optimum performance. Every 97 comes with a full installation guide and further help is available at the Stromberg online Tech Center.