1968 Chrysler Corporation

Carburetors

for

Passenger Cars

Carter Carburetor Specifications:

Carburetor Model: BBS:

1 Barrel

Carburetor # 4414S

Mixture Screw: 2 Turn to Open

Float Level: 1/4"

Bowl Vent Drill Size: .060"

Choke Unloader Setting: 3/16"

Fast Idle Cam Position Drill Size: #48 Drill

Choke Vacuum Kick Drill Size: #20 Drill

Choke Setting: 2 Rich

Carburetor # 4320S

Mixture Screw: 2-1/2 Turn to Open

Float Level: 1/4"

Bowl Vent Drill Size: .060"

Choke Unloader Setting: 3/16"

Fast Idle Cam Position Drill Size: #48 Drill

Choke Vacuum Kick Drill Size: #35 Drill

Choke Setting: 2 Rich

Carburetor Model: BBD

Carburetor # 4416S

Mixture Screw: 2 Turns to Open

Float Level: 1/4"

Bowl Vent Drill Size: 1/16"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: #20 Drill

Fast Idle Cam Position Drill Size: #41 Drill

Choke Setting: Index

Carburetor # 4417S

Mixture Screw: 3 Turns to Open

Float Level: 1/4"

Bowl Vent Drill Size: 1/16"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: 41 Drill

Fast Idle Cam Position Drill Size: #50 Drill

Choke Setting: 2 Rich

Carburetor # 4420S

Mixture Screw: 2-1/2 Turns to Open

Float Level: 1/4"

Bowl Vent Drill Size: 1/16"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: #4 Drill

Fast Idle Cam Position Drill Size: #41 Drill

Choke Setting: 2 Rich

Carburetor # 4421S

Mixture Screw: 2-1/2 Turns to Open

Float Level: 1/4"

Bowl Vent Drill Size: 1/16"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: #28 Drill

Fast Idle Cam Position Drill Size: #41 Drill

Choke Setting: 2 Rich

Carburetor # 4422S

Mixture Screw: 1-1/2 Turns to Open

Float Level: 5/16"

Pump Travel: 29/32"

Bowl Vent Drill Size: .050"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: #1 Drill

Fast Idle Cam Position Drill Size: #30 Drill

Choke Setting: 2 Rich

Carburetor # 4423S

Mixture Screw: 1-1/2 Turns to Open

Float Level: 5/16"

Pump Travel: 29/32"

Bowl Vent Drill Size: .050"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: #16 Drill

Fast Idle Cam Position Drill Size: #30 Drill

Choke Setting: 2 Rich

Carburetor # 4578S

Mixture Screw: 1-1/2 Turns to Open

Float Level: 11/32"

Pump Travel: 1"

Bowl Vent Drill Size: 3/64"

Choke Unloader Setting: 1/4"

Choke Vacuum Kick Drill Size: 11/64"

Fast Idle Cam Position Drill Size: #30 Drill

Choke Setting: 2 Rich

Carburetor Model: AVS

Carburetor #4401S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 5/16"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .016"

Choke Unloader: 1/4"

Choke Vacuum Break: 3/32"

Secondary Throttle Lockout: .020"

Carburetor #4424S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .015"

Choke Unloader: 1/4"

Choke Vacuum Break: 3/16"

Secondary Throttle Lockout: .020"

Carburetor #4425S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .012"

Choke Unloader: 1/4"

Choke Vacuum Break: 5/64"

Secondary Throttle Lockout: .020"

Carburetor #4426S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 5/16"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .012"

Choke Unloader: 1/4"

Choke Vacuum Break: 3/16"

Secondary Throttle Lockout: .020"

Carburetor #4428S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .014"

Choke Unloader: 1/4"

Choke Vacuum Break: 3/16"

Secondary Throttle Lockout: .020"

Carburetor #4429S

Idle Screw Mixture: 1 to 2 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Bowl Vent: 1/8"

Fast Idle Throttle Valve Clearance: .014"

Choke Unloader: 1/4"

Choke Vacuum Break: 5/32"

Carburetor Model: AFB

4 Barrel

Carburetor # 4430S

Float Level: 19/64"

Float Drop: 23/32"

Pump Travel: 7/16"

Secondary Throttle Lever: 17/64"

4 Barrel

Carburetor # 4431S

Mixture Screw: 3 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Fast Idle Throttle Valve Clearance: .013"

Choke Unloader Setting: 1/4"

Secondary Throttle Lever: 17/64"

4 Barrel

Carburetor # 4432S

Mixture Screw: 3-1/2 Turns to Open

Float Level: 7/32"

Float Drop: 23/32"

Pump Travel: 7/16"

Fast Idle Throttle Valve Clearance: .013"

Choke Unloader Setting: 1/4"

Secondary Throttle Lever: 17/64"

Holley Carburetor Specifications:

Carburetor Model: 1920

Carburetor #R-3919-A

Idle Mixture Screw: 2 Turns to Open

Wet Fuel Level: 27/32"

Bowl Vent Clearance: 3/32"

Fast Idle Speed: 1,400 RPM

Choke Setting: 2 Rich

Carburetor Model: 1920

Carburetor #R-3920-A

Idle Mixture Screw: 2 Turns to Open

Wet Fuel Level: 27/32"

Bowl Vent Clearance: 3/32"

Fast Idle Speed: 1,600 RPM

Choke Setting: 2 Rich

Carburetor #R-3921-A

Idle Mixture Screw: 2 Turns to Open

Wet Fuel Level: 27/32"

Bowl Vent Clearance: 3/32"

Fast Idle Speed: 1,400 RPM

Choke Setting: 2 Rich

Carburetor #R-3922-A;

Idle Mixture Screw: 2 Turns to Open

Wet Fuel Level: 27/32"

Bowl Vent Clearance: 3/32"

Fast Idle Speed: 1,600 RPM

Carburetor #R-3924-A;

Idle Mixture Screw: 2 Turns to Open

Wet Fuel Level: 27/32"

Bowl Vent Clearance: 3/32"

Fast Idle Speed: 1,400 RPM

Carburetor #R-3918-A;

Pump Lever Clearance: .015"

Choke Unloader Setting: 5/32"

Bowl Vent Clearance: #50 Drill

Fast Idle:

On Bench: #46 Drill

On Car: 1,400 RPM