Electrical Specifications

Duty Distributor Idle
Transmission Cycle Number RPM Basic Timing


Auto LD 4289980 800 12° BTDC +/- 2° [1]
Auto LD 4289980 750 12° BTDC +/- 2° [1], [2]
Auto & Man. HD 4289980 710 10° BTDC +/- 2°
Auto & Man. HD 4289980 800 10° BTDC +/- 2° [3]
Auto & Man. HD 4289980 800 13° BTDC +/- 2° [4]
Auto HD 4289980 800 13° BTDC +/- 2° [2], [3]




[1] Except California
[2] High Altitude
[3] Federal Only
[4] Except Federal