Economy and Efficiency: Four-Barrel Design,The Quadrajet has different-sized primary and secondary bores. Small primary bores optimize throttle response and fuel efficiency, while larger secondary bores handle full-throttle conditions. The primary venturi delivers fuel and air at low to mid-range RPMs, while the secondary venturi handles higher RPMs Excellent Performance: The centrally located float in the Quadrajet provides excellent fuel control through the triple venturi boosters. It is highly resistant to level changes caused by cornering or acceleration, making the Quadrajet suitable for off-road performance Fitment: Designed for Chevy/GMC trucks and cars from 1966 to 1973, this 4-barrel Quadrajet is compatible with various engines, including the 327, 350, 396, 400, 402, and 454. It bolts directly onto the original Quadrajet spread-bore GM-style intake manifold. However, it is not suitable for aftermarket intake manifolds, so be sure to compare images and dimensions before purchasing Package Contents: When you purchase the Quadrajet carburetor, it includes 1x carburetor, 1x flange gaskets, 1x air filter gaskets, 1x tool for pushing plugs, 4x plugs, and 8x jets. The extra jets allow for fine-tuning and modification, although they are optional for most users Installation Tips: While no instructions are included, professional installation is recommended. The new carburetor arrives ready to install, but minor adjustments (mixture, idle, and float) may be necessary based on your specific engine and location. For optimal performance, consider using a regulated fuel pressure of 5 to 5.5 psi. If you're using a 7 lb or higher fuel pump, adding a fuel pressure regulator is advisable

Item description

High-Quality Design: The 4MV features a robust build and precise engineering. It’s a divorce/mechanical choke carburetor, meaning the choke is conveniently located on the intake manifold and connected to the carburetor via a choke rod.

 

Versatile Compatibility: Designed for Chevy/GMC trucks and cars from 1966 to 1973, this 4-barrel Quadrajet is compatible with various engines, including the 327, 350, 396, 400, 402, and 454. Bolt it directly onto any Quadrajet Spread bore GM-style intake manifold.

 

Easy Installation: While there are no included instructions, professional installation is recommended. The new carburetor arrives ready to install, but minor adjustments (mixture, idle, and float) may be necessary based on your specific engine and location.

 

Optimal Fuel Pressure: We recommend a regulated fuel pressure of 5 to 5.5 psi for optimal performance. If you’re using a 7 lb or higher fuel pump, consider adding a fuel pressure regulator.

 

DIY Customization: Included extra jets allow for fine-tuning and modification. Use them if needed, but they’re optional for most users.

 

Perfect Fit Guarantee: To ensure a precise fit, provide us with your carburetor’s part number（Usually a 7-digit number starting with 7 or an 8-digit number starting with 17） and 3-5 pictures of the original carb. We’ll confirm compatibility and help you achieve peak performance!

Replaces Part Numbers:

Chevy

7026202 7026203 7026210 7027202 7027203

7027212 7027213 7040007 7040021 7046904

7047207 7047303 7047305 7047306 7047307

7047316 7047319 17054709.

Note: Part numbers are for reference only, if your carbs number is not shown here, please contact us to confirm.

 

Specifications

CFM:750 CFM flow

Auxiliary Venturi:7.3mm

Venturi(Choke tube):28mm

Main jet:185

Air correction jets:110

Idle jet:120

Needle valve:3.3

Package:1x Carburetor, 1 x Flange Gaskets, 1x Air filter gaskets, 1x Tool for Pushing Plug, 4x Plugs, 8x jets. As shown in the picture.

Fitment

For 1970-1972 V8 Chevy big block Mark IV 6.6L/402

For 1967-1973 V8 Chevy small block Gen I 5.7L/350

For 1966-1970 V8 Chevy big block Mark IV 6.5L/396 Street

For 1966-1969 V8 Chevy small block Gen I 5.4L/327 Street

For 1966-1969 V8 Chevy big block Mark IV 7.0L/427 Street

For 1970-1973 V8 Chevy big block Mark IV 7.4L/454

For 1970-1973 V8 Chevy small block Gen I 6.6L/400

For GMC 1967-1968 V8 Chevy small block Gen I 5.4L/327

For GMC 1968-1969 V8 Chevy big block Mark IV 6.5L/396

For GMC 1969-1973 V8

For Chevy small block Gen 5.7L/350

For GMC 1970-1973 V8 Chevy big block Mark IV 7.4L/454

For GMC 1971-1972 V8 Chevy big block Mark IV 6.6L/402.