Home    Contact Us      

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player







ENGINE SPECS

1960 Buick 401 (325 hp) V8 Engine Specs

GENERAL SPECIFICATIONS

Model Designation: Invicta V8 - 4600; Electra V8 - 4700; Electra V8 "225" - 4800

Wheel base: Invicta: 123; Both Electras: 126.3

Valve Location: In head

Bore and Stroke: 4.1875 x 3.64

Piston displacement, Cubic Inches: 401

Compression ratio: 10.25

Maximum Brake Horsepower: 325 @ 4400

Maximum Torque Lbs.Ft. @ RPM: Le Sabre V8 w/Performance Option: 445 @ 2800

Normal Oil Pressure Pounds: 40

TUNE UP SPECIFICATIONS

Spark Plug Make: AC 44S

Spark Plug Gap, Inch: .032

Firing Order: 12784563 (front to rear: Left bank: 2-4-6-8; Right bank: 1-3-5-7)

Ignition Timing: Mark: 12 BTDC Mark Location: Vib. Damper [Note: When setting timing, adjust idle to 400 RPM so that vacuum and centrifugal advance mechanisms are not in operation.]

Engine Idle Speed, RPM:  485

Voltage & Polarity: 12 volts, negative ground

PISTON AND RING SPECIFICATIONS

Fitting Pistons with Scale:
Shim thickness .003
Pounds on Scale: 7 to 13

Ring End Gap:
Compression: .015
Oil: .015
[Note: Fit rings in tapered bores for clearance given in tightest portion of ring travel]

Wristpin Diameter, Inch: .9995

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: 33 degrees
     Exhaust Closes: 44 ATDC

Valve Spring Pressure Pounds at Inches Length:
    Inner Spring: 76 @ 1.35; Outer Spring: 96 @ 1.16

Valve Stem Clearance: Intake: Top .001-.003; Bottom .0025-.0045; Exhaust: .003-.005

ENGINE BEARING SPECIFICATIONS

Connecting Rod Bearings:
    Journal Diameter, Inches: 2.249-2.250
    Bearing Clearance, Inch: .0002-.0023

Main Bearings:
    Journal Diameter, Inches: 2.498-2.499
    Bearing clearance: .0005-.0021
    Shaft End Play: .004-.008    (Thrust on Bearing No. 5)

CAPACITY DATA

Cooling System:
        Without heater: 16.5
        With heater: 18.5

Fuel Tank: 20 gallons

Engine Oil: 4 quarts (5 quarts with filter change)

Automatic Transmission: 12 quarts

Rear Axle: 6-1/2 pints

Other 1960 Buick engine specs

1960 Buick 364 (210 hp) V8 Engine Specs

1960 Buick 364 (235 hp) V8 Engine Specs

1960 Buick 364 (250 hp) V8 Engine Specs

1960 Buick 364 (300 hp) V8 Engine Specs

1960 Buick 401 (325 hp) V8 Engine Specs

1960 Buick 364 & 401 V8 Engine Specs:
Distributor Specs


1960 Buick 364 & 401 V8 Engine Specs:
Generator Specs


1960 Buick 364 & 401 V8 Engine Specs:
Regulator Specs


1960 Buick 364 & 401 V8 Engine Specs:
Starting Motor Specs


1960 Buick 364 & 401
Engine Tightening Specs


1960 Buick 364 & 401
Wheel Alignment Specs


Return to Buick Engine Specs Index




-|-|-