GENERAL SPECIFICATIONS |
| Model Designation: Six Cylinder; Special 6, JJ; De Luxe 6 (without Powerglide trans.) JK. |
| Wheel base: 115 |
| Valve Location: In head |
| Bore and Stroke: 3-1/2 x 3-3/4 |
| Piston displacement, Cubic Inches: 216.5 |
| Compression ratio: 6.60 |
| Maximum Brake Horsepower: 92 @ 3400 RPM |
| Maximum Torque Lbs.Ft. @ RPM: 176 @ 1500 |
| Normal Oil Pressure Pounds: 14 |
TUNE UP SPECIFICATIONS |
| Spark Plug Make: AC 46-5 |
| Spark Plug Gap, Inch: .035 |
| Firing Order: 153624 |
| Ignition Timing: Timing mark: steel ball located on flywheel |
| Engine Idle Speed, RPM: Manual shift trans. 475; automatic trans. 425 |
| Cylinder Head Torque Lbs.Ft.: 75-80 |
| Compression Pressure & Cranking Speed: 110 |
PISTON AND RING SPECIFICATIONS |
Fitting Pistons with Scale:
Removed from Above
Shim thickness to use:
Pistons should pass on a .002 feeler with light pressure, and lock on a .003 feeler; |
Rings: (for tapered bores for minimum clearance fit rings in tightest portion of ring travel)
Ring Gap, Minimum: Compression: .005
Ring Gap, Minimum: Oil: .005
Clearance in Groove: Compression: .0015-.003
Clearance in Groove: Oil: .002-.0035 |
| Wristpin Diameter, Inch: .8645-.8650 |
VALVE SPECIFICATIONS |
Operating Clearance:
Standard Trans.: Intake: .006 Hot; Exhaust: .015 Hot
Automatic Trans.: Intake: 0; Exhaust: 0 |
| Clearance for Timing Intake: 0 |
| Valve Seat Angle, degrees: Intake 31; exhaust 46 |
Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
Standard Trans.: Intake opens: 1 degree ATDC; Exhaust Closes Degrees ATDC: 9
Automatic Trans: Intake opens: 16 BTDC, Exhause Closes Degrees ATDC: 17-1/2 |
Valve Spring Pressure Pounds at Inches Length:
Spring: Standard: 125 @ 1-1/2; Automatic: 160 @ 1-1.2 |
Valve Stem Clearance:
Intake: .001-003
Exhaust: .002-.004 |
ENGINE BEARING SPECIFICATIONS |
Connecting Rod Bearings:
Journal Diameter, Inches: 2.311-2.312
Bearing Clearance, Inch: .0003-.0013
Rod End Play, Inch: .004-.012
Rod Bolt Tension, Lbs.Ft.: 35-45 |
Main Bearings:
Journal Diameter, Inches: Front: 2.6835 - 2,6845; No. 2: 2.7145-2.7155; No. 3: 2.7455-2.7465; No. 4: 2.7765-2.7775
Bearing Clearance, Inch: .0007-.0028
Crankshaft End Play, Inch (taken on No. 3 bearing): .003-.009
Main Bolt Tension, Lbs.Ft.: 100-110 |
CAPACITY DATA |
Cooling System:
Without heater: 15 quarts
With heater: 16 quarts |
| Fuel Tank: 16 gallons |
| Engine Oil: 5 quarts |
| Transmission: 1-1/2 pints; |
| Rear Axle: 3-1/2 pints |
DELCO-REMY DISTRIBUTOR SPECIFICATIONS |
| Distributor part number: 1112362, 1112363 (distributor rotates clockwise) |
| Cam Angle, degrees: 31-37 |
| Breaker Point opening, Inch: .022 |
| Condenser Capacity: .18-.23 Mfds. |
| Breaker Arm Spring Tension: 17-21 Oz. |
Centrifugal Advance:
1112362:
Advance starts 1-1/2 degrees @ 350
Full Advance: 19 degrees @ 1700 RPM
1112363;
Advance starts 1 @ 300
Full Advance: 16-1/2 @ 1850 |
Vacuum Advance Data:
Inches of vacuum to start plunger movement: 7-8-1/2
Inches of vacuum for full plunger travel: 16-1/2 - 18-1/2
Maximum vacuum advance, Dist. degrees: 10 |
DELCO-REMY GENERATOR SPECIFICATIONS |
| Generator Number: 1102749, 1102761 (generator rotates clockwise) |
Generator output:
1102749: 45 Amps @ 2400 RPM; 1102761 36 Amps @ 2400 |
| Brush Spring Tension: 28 oz. |
| Field Current (6 volts): 1.75-1.9 |
REGULATOR SPECIFICATIONS |
| Regulator Number: 1118300, 1118301 (Regulators negative ground) |
Cutout Relay:
Voltage to close points: 6.4
Reverse Current to Open Points: 0-3 amps
Armature Air Gap: .020 |
| Voltage Regulator Setting: 7.3 volts |
| Current Regulator Setting: 1118300: 42 amps; 1118301 36 amps |
| Current and voltage armature air gap, Inch: .075 |
DELCO-REMY STARTING MOTOR SPECIFICATIONS |
| Part number: 1107075 (starter rotates clockwise) |
| Bush Spring Tension, Ounces: 24-28 |
| No Load Test: 70 amps, 5.65 volts @ 5500 RPM |
| Torque Test: 550 Amps, 3.25 volts, Torque, Lbs.Ft.: 11 |
