SV Engine Specifications

Engine specifications for the IHC SV line of engines.

  • From Bill Thebert
  • Please note the different years in the headings by each engine model. Note that by 1979, for example, emissions equipment had reduced the HP output of the 4-196 to that of a 1974 vintage 4-152.

    Detailed Gasoline Engine Specifications (IH-made Engines)
    4-152
    (1974)
    4-196
    (1979)
    V-266 V-304A
    (1979)
    V-345A
    (1979)
    V-392
    (1974)
    Bore 3 7/8" 4.125" 3 5/8" 3 7/8" 3 7/8" 4 1/8"
    Stroke 3 7/32" 3.656" 3 7/32" 3 7/32" 3 21/32" 3 21/32
    Displacement 151.84 cu in 195.45 cu in 266 303.68 cu in 344.96 cu in 390.89 cu in
    Compression Ratio 8.19 to 1 8.02 to 1 8.4 to 1 8.19 to 1 8.28 to 1 8.02 to 1
    Dry Weight 542 lbs 545 lbs 619 lbs 700 lbs 725 lbs 765 lbs
    Net HP 80 @ 4400 76.5 bhp @ 3600 155 @ 4400 122 bhp @ 3400 150 bhp @ 3500 196 bhp @ 3600
    Net Torque 135 @ 2400 153 lb-ft @ 2000 227 lb-ft @ 2800 226 lb-ft @ 2000 263 lb-ft @ 2000 316 lb-ft @ 2400
    Intake Seat diameter 1.879" 1.938" 1.879" 1.879" 1.938"
    Intake Head diameter 1.969" 2.078" 1.969" 1.969" 2.078"
    Intake Stem diameter .3725" .3725" .3725" .3725" .3725"
    Lift .440" .440" .440" .440" .440" .440"
    Open (before TDC) 18 degrees 18 degrees 21 degrees 21 degrees 21 degrees
    Close (after BDC) 58 degrees 58 degrees 63 degrees 63 degrees 63 degrees
    Exhaust Seat diameter 1.539" 1.664" 1.539" 1.539" 1.664"
    Exhaust Head diameter 1.609" 1.734" 1.609" 1.609" 1.734"
    Exhaust Stem diameter .375" .4145" .375" .375" .4145"
    Lift .395" .395" .395" .395" .395" .395"
    Open (before BDC) 58 degrees 58 degrees 58 degrees 58 degrees 58 degrees
    Close (after TDC) 18 degrees 18 degrees 18 degrees 18 degrees 18 degrees
    Seat Insert None Alloy None Alloy Alloy
    Firing Order 1-3-4-2 1-3-4-2 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2 1-8-4-3-6-5-7-2
    Carburetor 1940 Holley 2300 Holley 2210 Holley Carter Thermoquad Carter Thermoquad
    Fuel Delivery 27 gph @ 4000rpm 27 gph @ 4000rpm 27 gph @ 4000rpm 27 gph @ 4000rpm 27 gph @ 4000rpm 27 gph @ 4000rpm
    Fuel Pressure 4.5 – 5.75 psi 4.5 – 5.75 psi 4.5 – 5.75 psi 4.5 – 5.75 psi 4.5 – 5.75 psi 4.5 – 5.75 psi
    Oil Capacity (dry) 6 qt 6 qt 6 qt 6 qt
    Oil Pressure (idle) 10 – 20psi 5 – 10 psi 5 – 10 psi 5-10 psi 5 – 10 psi
    Oil Pressure (4000rpm) 40 – 50 psi 50 psi 40 – 50 psi 50 psi 50 psi 50 psi

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    About jimhadfield

    Retired and enjoying it.
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