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  351 Ford engines

Ford 351 V-8 Engines 

  351 "C" 4V
1970-1973
Cleveland
351 "W" 4V
1969
Windsor
351 "R" 4V
1971-1972
Boss 351-HO
351 "H" 2V
1969
Engine Type 8 cylinder
90 degree,
Overhead Valves (OHV)
8 cylinder
90 degree,
Overhead Valves (OHV)
8 cylinder
90 degree,
Overhead Valves (OHV)
8 cylinder
90 degree,
Overhead Valves (OHV)
Displacement 351 cu.inches (CID) 351 cu.inches (CID) 351 cu.inches (CID) 351 cu.inches (CID)
Maximum torque

380 lbs./ft. @ 3,400 RPM

380 lbs./ft. @ 3,400 RPM 370 lbs./ft. @ 4,000 RPM
(1971)

275 lbs./ft. @ 6,000 RPM
(1972)

355 lbs./ft. @ 2,600 RPM
Maximum Horsepower 300 BHP @ 5,400 300 BHP @ 5,400 RPM
330 BHP @ 5,400 RPM
(1971)

275 BHP @ 6,000 RPM
(1972)
250 BHP @ 4,600 RPM
Firing Order       1-5-4-2-6-3-7-8
Bore & Stroke 4.00" X 3.50" 4.00" X 3.50" 4.002" x 3.50" 4.00" X 3.50"
Compression Ratio 11.0:1 11.0:1 11.5:1 (1971)

9.2:1 (1972) 

9.51:1
Mains 2-bolt 2-bolt 4-bolt 2-bolt
Carburetor

Autolite 4300-A (4V)
Squarebore

 automatic choke

Autolite 4300-A (4V )
Squarebore

automatic choke
Autolite 4300-D (4V)
Squarebore

 automatic choke

 
Size of Carburetor        
Fuel premium gas premium gas super premium (1971)

premium gas (1972)

regular gas
Intake Manifold cast iron cast iron aluminum (1971)

cast iron (1972)

cast iron
Valve train hydraulic lifters hydraulic lifters solid & adjustable lifters hydraulic lifters
Intake 2.185"-2.195"

2.185"-2.195"

2.184"-2.195"" 1.9025"-1.9175"
Exhaust 1.7045"-1.7145" 1.7045"-1.7145" 1.7045"-1.7145" 1.533"-1.548"
Distributor single point
vacuum advance
single point
vacuum advance
dual point
vacuum advance
single point
vacuum advance
Point Gap       .017"
Initial Ignition  Timing       6 degrees
Dwell @ idle RPM       24-29 (manual)
26-31 (auotmatic)
Spark Plugs Autolite AF-42 Autolite AF-42 Autolite ARF-42 Autolite ARF-42
Spark Plug Gap       .032"-.036"
Long Block Weight
in lbs.
530 530 530 530
Emission Controls IMCO (with Automatic, only NOx system)
California

IMCO (with automatic, only)
other 49 states

IMCO (with Automatic, only NOx system)
California

IMCO (with automatic, only)
other 49 states

NOx
California
IMCO (with Automatic, only NOx system)
California

IMCO (with automatic, only)
other 49 states

RPM Rev Limiter     6,050-6,150 RPM  

1970 - The 351 engine was used in Mercury Cougars & Montegos as well as the Ford Mustangs and Torinos.

1970 1/2 - The Ford Falcons had an optional 351 engine.

1971 - The 351 was available for use in the Mercury Cougars & Montegos and the Ford Mustangs and Torinos.

1971-1973 - The HO (High Output) Boss 351 engine was used only in Mustangs. Introduced in December 1970 and was available until the model year 1972. The 1972 Mustang Boss 351's also had ram air.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This page was created on August 31, 2000, it was last updated on Friday, January 19, 2001 .

Information is from several Ford sources.