Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 450 CFM CFM

  • Unique design that features changeable air bleeds and power valve channel restrictions
  • Integrated secondary metering plate with changeable jets
  • Features all aluminum components for additional weight savings
  • Equipped with universal throttle levers to accommodate Ford A/T kickdown, GM 700 R4 mounting holes, and ability to mount brackets for Chrysler vehicles
  • Carburetor has a height of 3-1/4" and a 5.160" x 5.625" bolt pattern

Rebates Available

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Key Specs

Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range400-499 CFM
CFM450 CFM
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Need To Know

Quick and Easy Returns

Return Policy

Quick Fuel Technology SL-450-VS Details

Slayer Series street carburetors are designed with many of the same innovations and features that are built into all QFT race-winning carburetors, including changeable air bleeds and power valve channel restrictions. It's designed with a secondary metering plate with changeable jets, and features all aluminum components for additional weight savings. All Slayer Series carburetors are equipped with universal throttle levers to accommodate Ford A/T kickdown, GM 700 R4 mounting holes, and ability to mount brackets for Chrysler vehicles. Slayer Series are available in 450, 600, and 750 cfm vacuum secondary models.

Charts

Rebates

Holley October Promo 10% Off Select Parts Sale

Holley October Promo 10% Off Select Parts SaleHolleyOctoberPromo10%OffSelectPartsSale

Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Quick Fuel Technology SL-450-VS Specifications

KEY SPECS
MFG. Part #SL-450-VS
BrandQuick Fuel Technology
Carburetor Barrels4-Barrel
Fuel TypeGasoline
Choke TypeElectric
CFM Range400-499 CFM
CFM450 CFM
Carburetor Flange Type4-Barrel Square Bore
FinishShiny
Material TypeAluminum
ColorNatural
Secondary TypeVacuum
Fuel Inlet TypeSingle
Gasket(s) IncludedYes
New or RemanufacturedNew
Throttle Linkage TypeUniversal
Supercharged ApplicationNo
GENERAL
BoosterDown-leg
Bolt Hole Pattern5.160" x 5.625"
Carburetor Height3.25
GTIN Code849804015458
Sold in QuantityEach

Ratings & Reviews

5

7 Reviews

Overall Assessment

Customers highly appreciate the product’s superb quality, ease of installation, and notable practicality for a variety of different engine types. It is frequently praised for its immediacy in improving performance across several engines, including the 302, 2.8 V6 Capri, and 273 Mopar LA small block. The product is characterized as dependable, effective right out of the box, and capable of being tuned to specific requirements, like fuel pressure regulation. A recommended buy, customers have expressed readiness to repurchase based on its remarkable performance, positioning it as highly competitive in the market.

5

7 reviews

5

7

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This is one Great Carb!

5.0

a year ago

Cody

Lincoln, NE

Verified

Put on a stock 283. The 450 CFM should be perfect for a 283. Once I got timing set correctly, it started right up! Idle adjustments were easy. Throttle response is way better than the 2bbl I had on it.

Would Recommend

Fantastic carb-instant difference.

5.0

4 years ago

Cre

Charleston SC

Verified

Fantastic carb. Would buy 10x

Would Recommend

I would buy this product again.

5.0

5 years ago

Henry's trucking

Zion lii

Verified

Put them on a tunnel ram.

Would Recommend

Worked great was quick to deliver. Husband very HAPPY

5.0

5 years ago

Gary

Ruth NV

Verified

Great works fine.

Would Recommend

I would buy again

5.0

6 years ago

Gary

ND

Verified

Works great on a slightly modified 302

Would Recommend

Quick Fuel Carb

5.0

6 years ago

D

Mpls Mn

Verified

The Quick Fuel was easy to install on a 2.8 V6 Capri engine. Worked darn well right out of the box.

Would Recommend

Great product

5.0

7 years ago

lilredridinghood

Heinade, Germany lower saxony

Verified

I put that carb on a 273 mopar LA small block. Matches perfect for such a small engine, but is slso very sensitive regarding the fuel pressure, had to install a regulator to keep it to the recommend 6.5 psi

Showing 7 of 7 reviews

Questions & Answers

1 Question • 1 Answer

Can my "Slayer Series" 450 CFM Carburetor be hooked up with two (2) fuel inlets?

by Thomas

• 8 years ago

1 answer

1 of 1 questions shown

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