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Best holley 600 vacuum secondary tuning
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Holley 0-4779C Model 4150 Double Pumper 750 CFM Square Bore 4-Barrel Mechanical Secondary Manual Choke New Carburetor
$578.95
$787.37
Last update was on: February 23, 2025 6:28 am
- Mechanical secondary dual accelerator pump for additional fuel under initial acceleration
- Dual feed fuel inlet with mechanical secondary type
- Dichromate finish with center hung floats
- 4-corner idle system for precise control
- 100-percent wet-flow tested and calibrated for street drivability