GENERAL SPECIFICATIONS
|
| Model Designation:
Custom V8, Monterey V8, Montclair V8: BU |
| Wheel base: 119 |
| Valve Location: In
head |
| Bore and
Stroke: 3.80 x 3.44 |
| Piston displacement, Cubic
Inches: 312 |
| Compression
ratio: w/Standard trans.
& overdrive trans.: 8, w/automatic trans.: 8.4 |
| Maximum
Brake Horsepower:
210 @ 4600 RPM |
| Maximum
Torque Lbs.Ft. @ RPM:
312 @ 2600 RPM |
| Normal
Oil Pressure Pounds: 45-50 |
TUNE UP SPECIFICATIONS
|
| Spark Plug
Make: Champion 870 |
| Spark Plug
Gap, Inch: .032-.036 |
| Firing
Order: 15486372 (front
to rear: Right bank 1-2-3-4, left bank 5-6-7-8)
|
| Timing
Mark: Standard or Overdrive
Trans.: 3 degree mark; Merc-O-Matic: 6 degrees.
Located on Vig. Damp. |
| Engine
Idle Speed, RPM: Standard
trans: 475-500; w/automatic: 425-250 (in drive) |
| Cylinder
Head Torque Lbs.Ft.: 65-75 |
| Compression
Pressure & Cranking Speed: 115
Min. |
| Voltage & Polarity: 12
volts, negative ground |
PISTON AND RING SPECIFICATIONS
|
| Fitting
Pistons with Scale: Pistons
removed from above. Shim thickness: .002; Pounds
on a Pull Scale: 5 to 10 |
Ring End
Gap: In tapered bores,
fit rings in tightest portion of ring travel
Compression: .012
Oil: .015 |
| Clearance
in Groove: Compression:
.006 Max.; Oil:
.006 Max. |
| Wristpin
Diameter, Inch: .9120-.9123 |
VALVE SPECIFICATIONS
|
Operating
Clearance:
Intake:
.019 Hot Exhaust: .019 Hot |
| Valve Seat
Angle, degrees: 45 |
Valve Timing: (BTDC
= before top dead center; ATDC = after top dead
center)
Intake
opens: 12 BTDC
Exhaust
Closes: 8 ATDC |
Valve Spring
Pressure Pounds at Inches Length:
Inner
Spring: 71 @ 1.78 |
| Valve Stem
Clearance: Intake: .001-.002; Exhaust:
.002-.003 |
ENGINE BEARING SPECIFICATIONS
|
Connecting Rod Bearings:
Journal
Diameter, Inches: 2.1880-2.1888
Bearing Clearance, Inch: .0037 Max.
Rod End Play, Inch: .019 Max.
Rod Bolt Tension: Lbs.Ft.: 45-50 |
Main Bearings:
Journal
Diameter, Inches: 2.6235-2.6243
Bearing clearance: .0036Max.
Shaft End Play: .010 Max. (Thrust
on Center Bearing)
Main Bolt Tension: Lbs.Ft.: 80-90 |
CAPACITY DATA
|
Cooling
System:
Without
heater: 19 quarts
With heater: 20 quarts |
| Fuel Tank: 18
gallons |
| Engine
Oil: 5 quarts |
| Transmission:
w/out overdrive: 3-1/2 pints; w/overdrive: 5
pints; Automatic: 10-1/4 quarts |
| Rear Axle: 3-1/2
pints |
LOADAMATIC DISTRIBUTOR SPECIFICATIONS
|
| Distributor part number: B6A-12127D
(distributor rotates counter-clockwise) |
| Cam Angle,
degrees: 28 |
| Breaker Point opening, Inch: .014-.016 |
| Condenser
Capacity: .21-.25
Mfds. |
| Breaker Arm Spring Tension: 17-20
Oz. |
Vacuum
Advance: (degrees
at RPM of distributor)
At 300 RPM: 1/2 - 1-1/2 Degrees advance;
.16 Inches Vacuum
At 400 RPM: 0-1 Degrees
advance;
.29 Inches Vacuum
At 500 RPM: 5-1/2 - 6-1/2 Degrees
advance; .88
Inches Vacuum
At 1200 RPM: 8-1/2 - 9-1/2 Degrees
advance;
1.27 Inches Vacuum
At 1600 RPM: 11 - 12 Degrees advance;
1.73 Inches Vacuum
At 2000 RPM: 13 - 14-1/4 Degrees advance;
2.19 Inches Vacuum |
GENERATOR SPECIFICATIONS
|
| Generator
Number: FAS-10000B
(generator rotates clockwise, 12 volts, Negative
Ground) |
| Generator
output: 30 @ 3000
RPM |
| Brush Spring
Tension: 26-34 oz. |
| Field Current
@ 15 volts: 1.5-1.6 |
REGULATOR SPECIFICATIONS
|
| Regulator
Number: FAP-10505B,
FAP-10505C |
Cutout
Relay:
Voltage
to close points: 12.4
Reverse current to open points: 2-6 |
| Voltage
Regulator Setting: 14.6
volts |
| Current
Regulator Setting: 30
amps |
STARTING
MOTOR SPECIFICATIONS
|
| Part number:
All |
| Bush Spring
Tension, Ounces: 48-56 |
| No Load
Test: 120
amps, 12 volts @ 4800 RPM |
| Torque
Test: 550 Amps, 5
volts, Torque, Lbs.Ft.: 15.5 |
WHEEL ALIGNMENT SPECIFICATIONS
|
Caster,
Degrees
Limits: -1-1/2
to 0
Desired: -3/4 |
Camber,
Degrees
Limits: 0
to +3/4
Desired: +3/8 |
| Toe-In,
Inches: 3/32 to 5/32 |
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: 24°9' |
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)
7 @ 3/4 Camber |
