Holley 750 CFM 4-Barrel Blower Carburettor - Shiny Finish (HO0-80573S) — Fast Lane Spares Skip to content
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Holley 750 CFM 4-Barrel Blower Carburettor - Shiny Finish (HO0-80573S)

Holley 750 CFM 4-Barrel Blower Carburettor - Shiny Finish (HO0-80573S)

Mechanical Secondaries. Manual Choke
SKU: HO0-80573S
$2,204.90 - $2,204.90
$2,204.90
$2,204.90 - $2,204.90
$2,204.90
+ GST
Availability:
Available, allow for 2-10 days shipping

HO0-80573S - 750CFM S/CHARGER CARB SHINY

Mechanical Secondaries. Manual Choke

Part Number: HO0-80573S

These Carburettors that are intended for use with superchargers, and have a unique capability that allows their power Valves to reference the intake Manifold vacuum below the supercharger. This allows the power valve to operate as it should, based off intake Manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Without this external referencing, the power valve would be "reading" the Supercharger boost pressure, which has no bearing on the engine load.
Model 4150 with shiny finish

Small block Chevrolet 1x4, 170 series blower calibration
Four-corner idle system

Manual choke
Dual 50cc accelerator pumps

Mechanical secondary

Boost referenced power valve