Ford 427 V-8 Engines
427 "W" (4V)
1968 427 SOHC "D" (8V)
427 SOHC "L"(4V)
1964-68 427 "Q" (4V) 1963-64
427 "M" (8V) 1965
427 "R" (8V) 1963-67
427 "W" 1966-67
Engine Type 8 cylinder
90 degree,
Overhead Valves (OHV) 8 cylinder
90 degree,
Overhead Valves (OHV) 8 cylinder
90 degree,
Overhead Valves (OHV)
Displacement 427 cu.inches (CID) 427 cu.inches (CID) 427 cu.inches (CID)
Maximum torque 460 lbs./ft. @ 3,200 RPM
515 lbs./ft. @ 3,800 RPM (4V)
575 lbs./ft. @ 4,200 RPM (8V)
476 lbs./ft. @ 3,400 RPM (4V)
480 lbs./ft. @ 3,700 RPM (8V)
Maximum Horsepower 390 BHP @ 5,600 RPM 616 BHP @ 7,000 RPM (4V)
657 BHP @ 7,500 RPM (8V)
410 BHP @5,600 RPM (4V)
425 BHP @6,000 RPM (8V)
Firing Order 1-5-4-2-6-3-7-8
(Number 1 cylinder on right bank, nearest radiator) 1-5-4-2-6-3-7-8
(Number 1 cylinder on right bank, nearest radiator) 1-5-4-2-6-3-7-8
(Number 1 cylinder on right bank, nearest radiator)
Bore & Stroke 4.232" X 3.784"
(107.59 mm X 96.03 mm) 4.232" X 3.784"
(107.59 mm X 96.03 mm) 4.232" X 3.784"
(107.59 mm X 96.03 mm)
Compression Ratio 10.9:1 12.01:1 11.6:1 (all 1963-64)
10.0:1 (Mercury only)
11.0:1 (most 1965-67)
Oil Pressure (hot) 35 to 60 lbf/in2 35 to 60 lbf/in2 35 to 60 lbf/in2
Mains cross bolted cross bolted cross bolted
Carburetor Holley 4150 (4V)
automatic choke
Holley 4150-C (4V)
Holley 4160 x2 (8V)
Holley 4150 (4V - "Q" series)
Holley 4150-C (4V - "W" series)
Holley 4160 x2 (8V - "M" & "R" series)
all automatic choke
Size of Carburetor 710 cfm (4V)
780 cfm x2 (8V)
Fuel premium gas super premium super premium
Intake Manifold aluminum (thru 12/1968)
cast iron after 12/1968
aluminum aluminum
Valve train hydraulic lifters solid & adjustable lifters solid & adjustable lifters
Intake 2.082"-2.097" 2.235"-2.265" 2.022"-2.037" (low riser intake before 3/15/1963)
2.082"-2.097" (low riser intake 3/1963-64)
2.185"-2.195" (all medium & hi riser intake)
Exhaust 1.645"-1.660" 1.938"-1.968" 1.645"-1.660" (all low riser intake)
1.723"-1.733" (all medium & hi riser intake)
Distributor single point
vacuum advance dual point
mechanical advance
Transistor ignition option: single point mechanical advance
dual point
mechanical advance
Transistor ignition option: single point mechanical advance
Spark Plugs Autolite BF-32 Autolite AG-2 Autolite BF-32
Long Block Weight
in lbs. 675 680 590 (4V-1967)
600 (8V-1967)
way to compare like engines the cammer has 2 points more compression electronic ignition dual quads solid lifter (bigger) cam
put the same induction ignition compression and cam in a regular 427 and it makes the same power