SPECIFICATIONS

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BOSS 351 MUSTANG  

"ENGINE SPECIFICATIONS" 

 

Type

90, 8-cyl., OHV

 

Stem diameter

  - intake

 

.3423-3416

Displacement

351

 

Bore, Stroke

4.00 X 3.50

 

  - exhaust

.3418-.3411

Bore/Stroke ratio

1.14 to 1

 

Maximum lift

  - intake

 

.491

Bore spacing

4.38

 

Maximum horsepower

@ RPM

330 @ 5400

 

  - exhaust

.491

Maximum torque @RPM

370 @4000

 

Seat angles

  - intake

 

45 30-45

Compression ratio

11.3 to 1

*(11.7 to 1)

 

Carburetor

Ford Autolite 4-venturi, spread bore,

750 CFM

 

  - exhaust

45 30-45

Fuel

Premium

 

Timing

  -intake opens

 

50 BTC

Fuel Tank capacity

20 gallons

 

Exhaust

Dual

 

  -intake closes

94 ABC

Oil capacity, including filter

6 quarts

 

  -exhaust opens

102 BBC

Oil pressure, normal,

 PSI  @ RPM

50-70@2000

 

  -exhaust closes

42 ATC

Rocker arm ration (nominal)

1.73

 

Spring Load

  - valve closed

 

93 pounds

@ 1.82 inches

Firing order

1-3-7-2-6-5-4-8

 

Engine 

    Overall height

 

28.92

 

 

  - valve open

315 pounds

@ 1.32 inches

    Overall width

24.78

 

    Overall length

28.98

 

Crankshaft

     Material

 

Selected nodular iron

    Overall weight

584 pounds

 

Engine Block

    Overall height

 

9.77

 

     Main bearing journal             diameter    

2.75

 

     Main bearing length

.880-1.132 in

    Overall width

18.04

 

     Main bearing material

Overplated copper-lead alloy on steel back

    Overall length

22.70

 

    Crankpin journal diameter

2.31

Valve lifters

Mechanical

 

    Connecting rod

 

Valves

  Material

 -intake

 

 

 

     Material

Forged steel (shotpeened & magnafluxed)

Sil-chrome, chrome-plated stem

 

     Length

5.78

 -exhaust

21-4N Stainless steel, aluminized head, chrome-plated stem

 

 

    Weight

27.49 ounces

Length

   -intake

   

5.231

 

Camshaft

   Material

 

Cast iron, phosphate coated

 

   -exhaust

5.05

 

Bearings  material

Lead base Babbitt on steel back

Diameter

  - intake

 

2.195

 

Pistons

    Material

 

Extruded aluminum

 

  - exhaust

1.7145

 

    Bare weight

20.0 ounces

 

    Number of rings

3

    Piston pin diameter

.9122

Oil Pump Drive

Distributor

Distributor drive

Camshaft

*Some musclecar literature quotes this figure.   

 

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