Edelbrock 1308-E85 VRS-4150 850 CFM E85 4-Barrel Race Performance Carburetor

The Edelbrock VRS-4150 #1308-E85 is an 850 CFM, 4-barrel performance carburetor purpose-built for E85 ethanol fuel applications. Engineered to satisfy both serious racers and high-performance street enthusiasts, this carburetor combines race-proven technology with everyday drivability in a single, no-compromise package.

E85-Specific Engineering:

• Custom four-circuit billet metering blocks with extra-large fuel jets specifically designed for E85, flowing significantly more fuel to achieve the ideal air/fuel ratio on ethanol
• Annular boosters deliver superior air-fuel atomization for exceptional throttle response and power output
• Dual 50cc accelerator pump circuits provide ample fuel enrichment to handle large displacement engines

Fuel System Features:

• 20% larger capacity fuel bowls with internal ribs to minimize foaming and control fuel slosh
• Sculpted mustache-style baffle directs incoming fuel to the bowl sidewalls to reduce aeration
• Nitrophyl floats with chamfered corner edges prevent fuel shutoff during aggressive cornering
• Jet extenders in the secondary bowl keep jets submerged under hard acceleration
• -6AN dual fuel inlets relocatable to either left or right side

Street-Friendly Performance Features:

• One-piece, 3.75-inch-tall cast aluminum body fits all 4150 and 4500 carb flange intake manifolds — no adapter required
• Street throttle arm includes all popular transmission kickdown take-off points
• PTFE-coated throttle shafts for smooth, consistent operation
• Built-in provisions for a standard GM three-wire TPS sensor mount
• Multiple vacuum ports for PCV, power brake, vacuum advance, and transmission modulator
• External idle bypass air adjustment screws accessible without removing the air cleaner or scoop

Advanced Tuning Capability:

• Four-circuit billet metering blocks with interchangeable, industry-standard screw-in bleeds and jets
• Interchangeable idle discharge jets with mixture screws on all four corners for clean idle with aggressive camshafts
• Fully adjustable intermediate fuel circuits for exceptional throttle response on loaded engines
• High-speed/main fuel circuit split into upper and lower bleed circuits for precise high-RPM fuel control
• Power valves on both primary and secondary circuits for optimized jetting across all operating ranges
• Dual power valve protection circuits prevent diaphragm damage from backfires

The Edelbrock 1308-E85 arrives factory pre-calibrated for E85 fuel and is ready to install straight out of the box. It is sold individually and is compatible with standard 4150 and 4500 flange intake manifolds.