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GMC
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1972
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G25/G2500 Van Base
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Repair and Diagnosis (Single Page)
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Engine Performance
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Ignition System
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Tune-Up - V8
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Distributor
Tune-Up - V8: Distributor
Point Gap
New
.019"
Used
.016"
Cam Angle
28-32°
Breaker Arm Spring Tension
19-23 ozs.
Condenser Capacity
.18-.23 mfd.
Fig 1: Firing Order & Timing Marks
Courtesy of GENERAL MOTORS COMPANY