Buick LeSabre 1965 Service Manual page 79

ENGINE FUEL A N D EXHAUST SYSTEMS SPECIFICATIONS 3 - 3
c. Carter Carburetor Calibrations—300 Engine
IMPORTANT: Calibrations are governed by the CODE number.
300 Eng. 300 Eng.
Auto. Trans. Syn. Trans.
Model Designation AFB AFB
Number of Barrels 4 4
Code Number, for Following
Calibrations 3826S 3827S
Bore Diameter, Primary 1 7/16" 1 7/16"
Large Venturi Diameter, Primary 1 1/8 " 1 1/8 "
Bore Diameter, Secondary 1 7/16" 1 7/16"
Large Venturi Diameter, Secondary 1 1/4 " 1 1/4 "
Float Level Adjustment 3/16" 3/16"
Float Drop Adjustment 3/4 " 3/4 "
Float Needle Seat #42 #42
Low Speed Jet #68 #66
Idle Discharge Port .180" x .030" .180" x .030"
Lower Idle Port #52 #52
Metering Jet, Primary 120-256 120-256
Metering Jet, Secondary
Production 120-222 120-222
High Altitude
Metering Rod
Production 16-341 16-341
High Altitude
NOTE: Use High Altitude Kit Above 3500 Feet
Use Kit Consisting of Secondary Jets,
Primary Rods and Springs.
Throttle Bore Vents
Anti-Percolator or Main Bleed Hole
Pump Setting at Closed Throttle
Pump Discharge Jet
Vacuum Spark Control Hole
Choke Coil Housing Number
Choke Thermostat Setting
Choke Suction Hole
Choke Piston Setting (With .026" Wire)
Closing Shoe Clearance
F.I. Cam Setting, Choke Closed
F.I. Cam Number
Unloader Opening at Choke
Valve Edge
Initial Idle Speed
Initial Idle Mixture
Fast Idle Speed in Drive
(Hot, on Low Step)
d. Rochester Carburetor Calibrations
IMPORTANT: Calibrations are governed by the CODE number on the attached code tag.
Model Designation
Number of Barrels
Code Number, for Following Calibrations
Throttle Bore
Small Venturi
Large Venturi
Main Meeting Jet
Production
High Altitude
#42
#64
7/16" Center Hole
#72
3/32"
170AZ478S
1 Notch Rich
#40
.081"
.020"
Index
181-354
1/8"
1/2 Turn In
1 Turn Out
600 RPM
#42
#64
7/16" Center Hole
#72
.180" x .040"
170AZ478S
Index
#40
.081"
.020"
Index
181-356
1/8"
1/2 Turn In
1 Turn Out
600 RPM
401 Eng.
Auto. Trans.
4GC
4
7025040
Primary Secondary
1 9/16" 1 11/16"
1/4 " 1/4 "
1 1/8 " 1 15/32"
.052"-60° .080"-60°
.049"-60° .077"-60°
300 Eng.
Syn. Trans.
2GC
2
7025047
1 7/16"
1/8 "
1 1/8 "
.055"-60°
.053"-60°
300 Eng.
Auto. Trans
2GC
2
7025046
1 7/16"
1/8 "
1 1/8 "
.052"-60°
.049"-60°