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Home >> Lincoln >> 1979 >> Mark V >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 302", 351" & 400" V8 Engines >> Engine Oiling >> Engine Specifications

Engine Specifications

GENERAL SPECIFICATIONS

Engine Net HP At RPM Torque (Ft. Lbs. at RPM) Compr. Ratio Bore Stroke Displ. Co. Ins.
302"2-Bbl. 129@3600 223@2600 8.4-1 4.00" 3.00" 302
351" W2-Bbl. 138@3200 260@2200 8.3-1 4.00" 3.50" 351
351" M2-Bbl. 151@3600 270@2200 8.0-1 4.00" 3.50" 351
400" 2-Bbl. 159@3400 315@1800 8.0-1 4.00" 4.00" 400
VALVES

Engine & Valve Head Diam. Face Angle Seat Angle Seat Width Stem Diameter Stem Clearance Valve Lift
302" & 351"W              
  Int. 1.782" 44° 45° .060-.080" .3416-.3423" .0010-.0027" .3823"(2)
  Exh. (1)1.451" 44° 45° .060-.080" .3411-.3418" .0015-.0032" .3980"(2)
351" M & 400"              
  Int. 2.041" 44° 45° .060-.080" .3416-.3423" .0010-.0027" .4065"(3)
  Exh. 1.655" 44° 45° .060-.080" .3411-.3418" .0015-.0032" .4065"(3)
(1) Head diameter on 351" W is 1.461".
(2) Valve lift on 351" W engine is: intake.4186", exhaust.4186".
(3) Valve lift on 400" engine is: intake.4280", exhaust.4325".
PISTONS, PINS, RINGS

Engine PISTONS PINS RINGS
(1)Clearance Piston Fit Rod Fit Rings End Gap Side Clearance
302" .0018-.0026" .0002-.0004" Press Fit Comp.
Oil		 .010-.020"
.015-.055"		 .002-.004"
Snug
351" W .0018-.0026" .0003-.0005" Press Fit Comp.
Oil		 .010-.020"
.015-.055"		 .002-.004"
Snug
351" M & 400" .0014-.0022" .0003-.0005" Press Fit Comp.
Oil		 .010-.020"
.015-.055"		 .002-.004"
Snug
(1) Measured at piston bore centerline, 90° to pin bore.
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS

Engine MAIN BEARINGS CONNECTING ROD BEARINGS
Journal Diam. Clearance Thrust Bearing Crankshaft End Play Journal Diam. Clearance Side Play
302" 2.2482-2.2490" .0001-.0015"(1) No. 3 .004-.008" 2.1228-2.1236" .0008-.0015" .010-.020"
351"W 2.9994-3.0002" .0008-.0015" No. 3 .004-.008" 2.3103-2.3111" .0008-.0015" .010-.020"
351" M, 400" 2.9994-3.0002" .0008-.0015" No. 3 .004-.008" 2.3103-2.3111" .0008-.0015" .010-.020"
(1) No. 1 bearing only. Others.0004-.0015".
CAMSHAFT(1)

Engine Journal Diam. Clearance(1) Lobe Lift(2)
302:      
  Jrnl. 1 2.0805-2.0815" .001-.003" Int..2373"
  2 2.0655-2.0665" Exh..2474"
  3 2.0505-2.0515"
  4 2.0355-2.0365"
  5 2.0205-2.0215"
351" W Same as 302" .001-.003" Int..260"
Exh..260"
351" M      
  Jrnl. 1 2.1238-2.1248" .001-.003" Int..235"
  2 2.0655-2.0665" Exh..235"
  3 2.0505-2.0515"
  4 2.0355-2.0365"
  5 2.0205-2.0215"
400" Same as 351" M .001-.003" Int..247"
Exh..250"
(1) - Allowable end play is.001-.007" on 302" and 351" W engines and.001-.006" on 351" M and 400" engines.
(1) Wear limit is.006".
(2) Maximum allowable lobe lift loss is.005".
VALVE SPRINGS

Engine Free Length PRESSURE (LBS.)
Valve Closed Valve Open
302"      
  Int. 2.04" 74-82@1.78" 190-212@1.36"
  Exh. 1.85" 76-84@1.60" 190-210@1.20"
351" W      
  Int. 2.04" 74-82@1.78" 215-137@1.39"
  Exh. 1.85" 76-84@1.60" 190-210@1.20"
351" M      
  Int. 2.06" 76-84@1.82" 215-237@1.39"
  Exh. 1.93" 79-87@1.68" 215-237@1.39"
400"      
  Int. 2.06" 76-84@1.82" 215-237@1.39"
  Exh. 1.93" 79-87@1.68" 215-237@1.39"
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