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Carburetor - Holley Rehab

New Life For An Old Carb

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Carb SpecsThe following chart lists the stock jetting, squirters, accelerator-pump cams, and power-valve components to return a modified PN 0-4779 back to its original configuration. With a carburetor of questionable or unknown history, it's always best to return the carb to its original configuration before beginning the fine-tuning operation.

For the purposes of this story, we will address the parts necessary to return a PN 0-4779-2 to its original specs. All of this information can be found in any recent Holley catalog under the pages marked Carburetion Numerical Listing.

Carburetor: 750-cfm Mechanical Secondary, PN 0-4779-2Primary main jets: 70Primary power valve: 6.5Primary accelerator-pump squirter: 0.028Secondary main jets: 80Secondary power valve: BlockedSecondary accelerator-pump squirter: 0.031

Parts List    
Component PN Price
TricKit 37-933 $80
Renew kit 37-485 34
Throttle-plate kit, 1111/416, no hole 26-94 8
Throttle-plate kit, 1111/416, 0.093 holes 26-95 8
Throttle-plate kit, 1111/416, 0.150 holes 26-96 11
Throttle-plate assembly, 1111/416 12R11147AP N/A
Metering block, primary, 4779-2 134-155 41
Metering block, primary, 4779-6 34R11179AQ 43
Metering block, secondary 34R11041AQ 41
Secondary adjusting lever 26-137 30
Replacement fuel bowl, classic 134-103C N/A
Replacement fuel bowl, standard 134-103 50
Fuel bowl, quick-change kit, primary 34-25 36
Fuel bowl, quick-change kit, secondary 34-26 35
Fuel bowl, primary 134-103 50
Fuel bowl, secondary 134-104 40
Accelerator-pump arm, metal 20-114 13
TH700-R4 TV-cable arm 20-121 N/A
TH700-R4 TV-cable bracket 20-95 19
SOURCES
Holley Performance Products
1801 Russellville Rd.
Bowling Green, KY 42101
KY  42101
270-782-2900
www.holley.com
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