HOLLEY / QUICK FUEL TECHNOLOGY 83670SA Cfm Vacuum Secondary Pro

( Brand: Holley / Quick Fuel Technology ), ( Manufacturer Part Number: 83670SA ), ( Part Type: Vacuum ), ( Non-domestic Product: No ), ( Modification Description: See Auction Description ), ( Fitment Type: Performance/custom ), ( Modified Item: Yes ), ( Choke Type: Electric Choke ), ( Surface Finish: Shiny Silver Zinc / Aluminum ), ( Country/region Of Manufacture: United States )

Review HOLLEY / QUICK FUEL TECHNOLOGY Custom Cfm Vacuum Secondary Inch Killer Pro Build fits STREET 680

The Holley 83670SA 680 CFM Vacuum Secondary Street PRO Carburetor is a high-performance automotive component designed for street applications seeking optimal fuel delivery and precise adjustment capabilities. This adaptable carburetor combines classic Holley styling with modern engineering and technology.

This 2-barrel carburetor boasts a generous 680 CFM (Cubic Feet per Minute) venturi size, delivering sufficient air flow to accommodate an assortment of engines while ensuring crisp throttle response. The vacuum secondary design offers an additional fuel circuit and offers improved vacuum secondary idle circuit for a smoother and more consistent idle. This configuration is particularly suitable for large displacement engines, providing excellent metering capabilities for power enhancement.

1. Self-adjusting, compensated needles providing precise fuel mixture adjustment for various altitudes and engine temperature conditions.

2. Stainless steel floats with sintered bronze discs for improved wearing resistance and optimal sealing.

3. Adjustable main jets, power jets, and emulsion tubes for multi-faceted tuning.

4. Relocatable Idle mixtures for superior idle adjustability.

5. Generous fuel bowl capacity for minimal fuel starvation under heavy throttle applications.

6. Integrated automatic choke system for easy cold weather starting.

7. Shatterproof base, windage tray, and bore bowl gasket for added durability.

8. Includes linkage components and mounting hardware for straightforward installation.

The Holley 83670SA 680 CFM Vacuum Secondary Street PRO Carburetor is a top-tier choice for vehicle enthusiasts looking for enhanced engine performance, impressive power delivery, and advanced fine-tuning capabilities in their street ride. With its sleek design, reliable operation, and Holley's commitment to innovation and precision engineering, this carburetor promises a notable improvement to your driving experience.

Holley's 83670SA 680 CFM Vacuum Secondary Street PRO carburetor is a popular choice among automotive enthusiasts for its reliable performance and ease of tuning. However, like any other product, it has its pros and cons. Lists below are the potential advantages and disadvantages of purchasing this carburetor model.

1. Great for street performance: The 680 CFM vacuum secondary design enables this carburetor to offer excellent engine response and throttle sensitivity, ideal for street driving and cruising.

2. Fuel efficiency: Holley's vacuum secondary design enhances fuel efficiency by providing better fuel pressure and atomization, which can result in improved gas mileage.

3. Easy tuning: The Street PRO comes with numerous tuning capabilities, including a secondary enrichment circuit, passenger-side linear base circle, and updated needle and jet kit for simpler tuning and reliability adjustments.

4. High-quality construction: Holley uses meticulously crafted components, such as 6061-T6 billet aluminum bodies and precision-machined internals, ensuring longevity and durability.

5. Wide applicability: This carburetor is suitable for various engine sizes and configurations, making it ideal for a broad range of applications.

1. Complex installation: The installation process for the Holley 83670SA can be rather complex, especially for those less experienced with carburetor tuning and setup.

2. Cost: Compared to some other carburetors in its class, the Holley 680 CFM Street PRO is on the higher end of the pricing spectrum.

3. Requires more maintenance: Since it is a high-performance carburetor, the Holley 83670SA can need more frequent adjustments and maintenance, which may be time-consuming and costly for some.

4. Limited air pump compatibility: Ensure compatibility with your specific air pump configuration, as some air pumps may not work optimally with the Holley 83670SA.

In conclusion, the Holley 83670SA 680 CFM Vacuum Secondary Street PRO carburetor is a suitable choice for those seeking exceptional engine performance, ease of tuning, and durability. However, its installation process, cost, and higher maintenance requirements should be taken into consideration before making a purchase. Ultimately, it can be recommended for seasoned DIYers and those willing to invest in a high-performance upgrade for their hot rod, muscle car, or classic vehicle.

Recommendation: If you're searching for a carburetor that offers impressive engine response, fuel efficiency, and applicability to various engine sizes, the Holley 83670SA 680 CFM Vacuum Secondary Street PRO can be a great solution. Just make sure you're prepared for a complex installation process and the requirement for more frequent maintenance.

Details:

Vacuum secondary Quick change spring kit with assortment and tuning instructions. New lite weight aluminum accelerator pump housing. All metal parts. Shiny Silver Aluminum finish.

Fine tune your secondary tip in rate minutes. This is an outstanding unit. Brand new Holley LIST-83670SA: Shiny Silver Aluminum section modified for increased air flow, and 1 11/16 throttle bore base plate. It is a universal fit carb, and covers many applications, Chevy, Ford, Mopar.

This is an all Aluminum brand new custom build. Stainless steel butterflies hi flow stainless button head butterfly screws. New primary and secondary Brass floats. All for increased air flow.

The item you are buying on is an RPM ltd. Built to better than factory Holley performance specs. Ultimate tenability for a vacuum secondary carb. Assembled using all non-stick, reusable, gaskets including bowl, metering block, power valve, nylon bowl screw gaskets, squinter needle seat.

Has both ported manifold vacuum provisions. Includes: New non stick base gasket. New air cleaner gasket. New Quick Fuel Technology lite weight aluminum Fuel bowls.

All units are blueprinted one at a time. 110 hi flow needles seats. Increased Fuel capacity and decreased heat retention weight. Power valve: 6.5 Hg hi flow primary, blocked secondary power valve.

A Street Avengers badder brother. Double pumper Fuel bowl vent baffles, controls slosh under hard acceleration, braking, cornering. Permanent clear view Fuel level sight glasses. Don't miss it.

Install fine tuning instructions. Custom features include: Four corner idle. Rebuilding and modifying Holley type carbs. All work guaranteed.

An awesome unit at an excellent price. Primary and secondary Fuel bowl vent baffles. Slabbed, hi flow primary throttle shaft. Great on a Street car, rest, custom, or pro Street.

Than for looking. Makes cold start a breeze. Custom, 4150 series, 680 cfm , square bore, dual feed, four corner idle, vacuum secondary carburetor, with electric choke. The carb has been completely assembled blueprinted using all non-stick, reusable, gaskets and seals, is ready to bolt on run.

Controls Fuel slosh under hard acceleration and cornering. New Brass primary and secondary floats. Sheet on your carb. New electric choke assembly.

Primary power valve blowout protector.

specifications carbcoon:

• for models: 680, Street
• brand: Holley / Quick Fuel Technology
• mpn: 83670sa
• part type: Vacuum
• non-domestic product: No
• modification description: See Auction Description
• fitment type: Performance/custom
• modified item: Yes
• choke type: Electric Choke
• surface finish: Shiny Silver Zinc / Aluminum
• country/region of manufacture: United States

general carbcoon:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

returns carbcoon:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

offer carbcoon:

• sold: 0
• started: January 11, 2025
• options: Ship-to-home
• quantity: 1
• availability: In Stock

payments carbcoon:

• wallet: Paypal
• credit card: Discover
• cash
• other

seller carbcoon:

• rating: 99.4%
• city: Melrose Park, Illinois
• # reviews: 10406

shipping carbcoon:

• transit: 4-10 Days
• type: Fixed
• cost: $30.00
• service: Standard
• class: Standard

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