This model of carburetor has the spread-bore flange bolt pattern only, 4.250" wide X 5.62 long. It replaces GM Rochester Q-jet carburetors.
Do you like the tunability of Holley's modular carbs, but need to simply replace a Q-jet? The spread bore bolt pattern of the 0-80555S lets you do just that. It has vacuum secondaries and electric choke, so it is useable on a wide variety of vehicles. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's. ***The 0-80555S is a Model 4175 designed to fit GM spread bore passenger car and light truck applications. It is not compatible with Ford or Chrysler Spread bore applications. The 0-80555S is not recommended for any RV applications. The 0-80555S is not designed to pass any emission laws. The 0-80555S is to be used only for Uncontrolled (Non-Emmisions Controlled) Vehicles or competition/off road vehicles. A carburetor spacer could be required to clear certain components on stock applications such as the Mr. Gasket 3406.
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Vibratory polished aluminum for good looks, weight savings and long lasting shine
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Universal performance replacement for Q-Jet and other Spread-Bore carbs (4.25" wide spread bore bolt pattern)
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Universal calibration for easy bolt-on performance
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Factory preset electric choke for easy startups
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Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
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Single feed fuel inlet for easy installation
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100% wet-flow tested by Holley technicians to assure it arrives ready to run!
Air Cleaner Flange Diameter |
5-1/8" |
|---|---|
Air Cleaner Stud Size |
1/4-20 UNC |
Barrel Quantity |
4 |
Barrels |
4 |
Billet Color |
None |
Body Color |
Polished |
Body Finish |
Polished |
Body Material |
Aluminum |
Booster |
Straight |
Booster Design |
Straight |
Brand |
Holley |
Carburetor Material |
Zinc |
Carburetor Use |
Street |
CFM |
650 |
Choke |
Electric |
Choke Type |
Electric |
Circuit |
2 |
Condition |
New |
Cubic Feet Per Minute Rating |
650 |
Emission Code |
2 |
Finish |
Polished |
Flange Type |
Spread Bore |
Fuel |
Gasoline |
Fuel Inlet |
Single |
Gasket Or Seal Included |
Yes |
Grade Type |
Performance |
Linkage Attached |
Yes |
Marine Approved |
No |
Marine Use |
No |
Material |
Aluminum |
Model |
4175 |
Mounting Hole Quantity |
4 |
Primary Inner Air Bleed Sizes Included |
63 |
Primary Jet Size |
62 |
Primary Outer Air Bleed Sizes Included |
97 |
Primary Power Valve |
6.5 |
Primary Power Valve (Hg) |
6.5 |
Primary Pump Nozzle Size |
40 |
Primary Throttle Bore |
1.375 IN |
Product Type |
Carburetor |
Sale Category |
Carburetors and Components |
Secondaries |
Vacuum |
Secondary Barrel Type |
Vacuum |
Secondary Inner Air Bleed Sizes Included |
63 |
Secondary Jet Size |
81 |
Secondary Outer Air Bleed Sizes Included |
85 |
Secondary Power Valve |
None |
Secondary Throttle Bore |
2.000 IN |
Secondary Type |
Vacuum |
Spacer Included |
No |
Street Legal |
Yes |
Supercharged Application |
No |
Warranty |
Limited 90 Day |
UPC |
090127865316 |
Part Number |
0-80555S |
ABOUT HOLLEY PERFORMANCE
For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.
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