GENERAL SPECIFICATIONS
|
| Model Designation:
Special 8: 68; Dynamic 8: 78; Custom Cruiser 8 (Futuramic) : 98 |
| Wheel base: Special 8: 119; Dynamic 8: 125; Custom Cruiser 8: 127 |
| Valve Location: In
block |
| Bore and
Stroke: 3-1/4
x 3-7/8 |
| Piston displacement, Cubic
Inches: 257.1 |
| Compression
ratio: 6.50; Custom Cruiser: 7.00 |
| Maximum
Brake Horsepower: 110
@ 3600 RPM; Custom Cruiser: 115 @ 3600 RPM |
| Maximum
Torque Lbs.Ft. @ RPM: 210
@ 2000 RPM; Custom Cruiser: 218 @ 2000 RPM |
| Normal
Oil Pressure Pounds: 30 |
TUNE UP SPECIFICATIONS (all models) |
| Spark Plug
Make: AC 45 |
| Spark Plug
Gap, Inch: .030 |
| Firing
Order: 16258374
|
| Timing
Mark: Ball; location: flywheel |
| Engine
Idle Speed, RPM: Standard
transmission: 425; w/automatic 375 (in drive) |
| Cylinder
Head Torque Lbs.Ft.: 60-70 |
| Compression
Pressure & Cranking Speed: 115 |
| Voltage & Polarity: 6
volts, negative ground |
PISTON AND RING SPECIFICATIONS
|
| Fitting
Pistons with Scale: Pistons
removed from above. Shim thickness: .002 |
| Pounds
on a Pull Scale: 4 to 11 |
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .009
Oil: .009 |
| Clearance in Groove: Compression:
.002-003; Oil: .001-.0025 |
| Wristpin
Diameter, Inch: .8554-.8557 |
VALVE SPECIFICATIONS
|
Operating
Clearance:
Intake: 0 Exhaust: 0 |
| Valve Seat
Angle, degrees: 45 |
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
Intake
opens: 13-1/2 BTDC
Exhaust
Closes: 14-1/2 ATDC |
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 65 @ 1-3/4 |
| Valve Stem
Clearance: Intake: .002-.004; Exhaust:
.0025-.0045 |
| Clearance for Timing Intake: 0 |
ENGINE BEARING SPECIFICATIONS
|
Connecting Rod Bearings:
Journal
Diameter, Inches: 2.123-2.124
Bearing Clearance, Inch: .0005-.0025
Rod End Play, Inch: .005-.010
Rod Bolt Tension: Lbs.Ft.: 50-55 |
Main Bearings:
Journal
Diameter, Inches:
Front: 2.478-2.479
No. 2: 2.5405-2.5415
No. 3: 2.603-2.604
No. 4: 2.6655-2.6665
No. 5: 2.6855-2.685
Bearing clearance: Rear main: .0005-.0025; all others: .001-.003
Shaft End Play: .004-.008 (Thrust is controlled by thrust plate at front bearing)
Main Bolt Tension: Lbs.Ft.: Nos. 1, 2, 3, 4: 100 ft/lbs; No. 5, 140 ft.lbs
|
CAPACITY DATA
|
Cooling
System:
Without
heater: 20-1/2 quarts
Without heater: 21-1/2 quarts
|
| Fuel Tank: 19
gallons |
| Engine
Oil: 6 quarts |
| Transmission:
w/out overdrive: 2 pints; Automatic: 11 quarts |
| Rear Axle: 2-1/2
pints |
DELCO-REMY DISTRIBUTOR SPECIFICATIONS
|
| Distributor part number: 1110808
(distributor rotates counter-clockwise) |
| Cam Angle,
degrees: 21-30 |
| Breaker Point opening, Inch: .022 |
| Condenser
Capacity: .18-.23
Mfds. |
| Breaker Arm Spring Tension: 19-23
Oz. |
Centrifugal Advance: (degrees
at RPM of distributor)
Advance starts: 2 @ 350 RPM
Full Advance: 12 @ 1600 RPM
Inches of Vacuum to Start Plunger Movement: 6-1/2 - 8-1/2
Inches of Vacuum for Full Plunger Movement: 14-16
Maximum Vacuum Advance Dist., Degrees: 6 |
DELCO-REMY GENERATOR SPECIFICATIONS
|
| Generator
Number: 1102664, 1102680
(generator rotates clockwise, 6 volts, Negative
Ground) |
| Generator
output: 30 amps @ 2050
RPM |
| Brush Spring
Tension: 25 oz. |
| Field Current at 6 Volts: 1.75-1.95 |
DELCO-REMY REGULATOR SPECIFICATIONS
|
| Regulator
Number: 1118201, 1118242 |
Cutout
Relay:
Voltage
to close points: 6.4
Reverse current to open points: 0-3
Armature Air Gap: .020 |
| Voltage
Regulator Setting: 7.4
volts |
| Current and Voltage Armature Air Gap: .075 inches |
| Current
Regulator Setting: 36
amps |
DELCO-REMY STARTING MOTOR SPECIFICATIONS
|
| Part number: 1107922 (rotates clockwise) |
| Bush Spring
Tension, Ounces: 24-28 |
| No Load
Test: 60
amps, 5.0 volts @ 6000 RPM |
| Torque
Test: 600 Amps, 3.0
volts, Torque, Lbs.Ft.: 15 |
WHEEL ALIGNMENT SPECIFICATIONS
|
Caster,
Degrees
Limits: -3/4
to - 3/8
Desired: - 3/8 |
Camber,
Degrees
Limits: -3/4
to +3/4
Desired: 0 |
| Toe-In,
Inches: 1/16 to 1/8 |
Toe-Out
on Turns, Degrees: (If
toe-out is incorrect, when other adjustments are
correct, look for bent steering arms.)
Outer wheel: 20
Inner Wheel: 22-1/2 to 23-1/2 |
Kingpin
Angle, or Steering Axis Degrees: (If
king pin or spindle support angle are incorrect,
but camber is correct, look for bent suspension
arms or steering knuckle support)
4-5/6 |
