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SELECTIONS: Products : Circle Track/Road Race : Crate Motor Classes : 4777 - 4150 650CFM Mechanical Secondary 4BBL 602 Crate Motor


Part Number:
44777S2

Product Name:
Holley 4BBL Mechanical Secondary 650CFM

Description:
SMI - STAGE TWO - 4777 (650CFM) 4150 HOLLEY FOUR BARREL:

Our Price: $625.00

Features

  • All body surfaces machined for maximum gasket sealing, ensuring consistency and reliability
  • Matched boosters are installed, then aligned and centered in the venturi for best flow and signal
  • Metering blocks are hand selected and all circuits and passages are checked for casting flaws and obstructions, as well as proper sizing
  • All components are then vibratory tumble polished and dichromate coated for a brilliant high gloss gold finish
  • Carburetor is assembled using only the highest quality components, including reusable gaskets for ease of tuning and service
  • Choke tower is removed with Bridgeport vertical milling machine to increase air flow, and balance air flow of primary and secondary venturis. This promotes increased high rpm horsepower. This is a no cost option however an optional electric choke can be
  • Booster design is chosen based on your engine specifications, then balanced and modified for increased signal strength and atomization characteristics, providing crisper throttle response and driveability, as well as increased HP and TQ thru-out the rpm
  • Floats are modified based on applications, drag float, single taper, double taper
  • Metering block design is selected based on your engine combination
  • Balance all metering passages, then resize and modify for optimum fuel curve, including:
  • Emulsion, High Speed Air Bleed, Idle, Idle Air Bleed, Main Well, Main Well Exit, Power Valve, Transition


Quantity: