Other features include all aluminum construction, 12-hole billet booster inserts, fully tunable billet metering blocks, adjustable external linkage, throttle position sensor mounting points and knurled (hand adjustable) curb idle screws. Each calibration has been dyno tested to deliver proven performance!

Features

All aluminum construction saves 3.8lbs. over original models (28% weight savings)

Gray anodized finish with black anodized billet aluminum metering block and booster inserts

Designed for use on Marine high horsepower engines

Fully machined from venturi throat to throttle bore for predictable & repeatable performance

Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship

12 hole billet booster inserts for superior atomization and crisp throttle response

Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)

Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle

Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling

Clear sight windows on both sides of bowls for easy and safe fuel level adjustments

Built in drain plug in front center of bowl provides easy access to empty contents of bowl

8 (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side

Factory ready TPS mounting points for use with data acquisition systems (Holley TPS P/N 534-214 available)

Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools

Contoured hex head squirter screws for streamlined airflow

Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor

100% wet-flow tested by Holley technicians to assure it arrives ready to run!

J-Style vent tubes