This kit uses the Offy Dual ’49-’53 Flathead Ford intake with Speedway’s 9 Super 7® carbs. It includes two carbs, the intake, air cleaners, linkage kit, fuel block, fittings and red fuel line. Assembly required.
Said to be its most popular flathead intake, Offenhauser’s 2×2 Regular intake has closely spaced carbs that will clear the stock generator. The Offy regular dual intake accepts two 3-bolt carbs. Great addition to a street oriented engine. Has 4-3/4″ carb centers.
The 9 Super 7® makes setting up a multiple carburetor induction system easier than when Strombergs were available new. All that’s required to do so with our kits is a Uni-Syn syncing tool and a little patience. Be sure to include the Secondary 9 Super 7® when installing 3-carb setups. Our 3 Carb kits come with one primary carburetor and two secondary carburetors while the 2 Carb kits are both primary carbs. See our for more information on using the 9 Super 7® in a 2×2 or 3×2 carb set-up.
Carb Centers: 4-3/4″
Carb pads are angled as they were on stock 49-53 intakes
Front drivers side accessory hole is for draft tube and measures 1.25″
Rear drivers side accessory hole is for oil fill tube and measures 1.375″
All-new tooling for crisp, flawless castings
New aluminum base assembly allows for cooler fuel temps and better fuel efficiency as compared to the original cast iron design
Stainless steel screws and hardware
Original troublesome needle and seat replaced by a Grose-style fuel inlet valve to better cope with higher fuel pressures and improved high speed running
Will not stick or dribble like the old Viton-tipped needle and seat setups
Extended brass throttle shaft to simplify multi-carb linkage
Note: If used with our progressive linkage kit, the front carburetor will need to be set as the primary.
Note: Not recommended for use with Ethanol fuels.
9 Super 7® Primary Carbs –
Features .045″ main metering jets and a number 65 power valve, which is the same as a stock 97 carb.
Replacement jet access plug gasket use # 91011542, replacement needle and seat gasket use # 91011543.
Includes base gasket.
The 9 Super 7® will operate suitably with fuel pressures ranging from 1-1/2 psi to 4 psi, with a desired setting of 2-1/2 psi to 3 psi. Fuel pressure from 4 psi to 7 psi will cause the carburetor to run excessively rich and may cause flooding. Flooding or leaks caused by excessive fuel pressure do not indicate a faulty carburetor. A fuel regulator such as # 560-58500 must be utilized to keep proper fuel pressure at the 1-1/2 to 4 psi range.
Our independent tests produced these flow numbers:
3″ of Vacuum – 60 CFM
10″ of Vacuum – 110 CFM
15″ of Vacuum – 136 1/2 CFM
28″ of Vacuum – 184 CFM
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