Pontiac 4000-Series

4000 SeriesEnginePart NumbersAdjustmentsNotesYear
PG4112
V8 287, 316, 326, 347, 350P, 370, 389, 400, 421, 428, 455S305FRM, S371RX-9, 3DR60GCrank +/- 2,4,6,8 degreesNo billet steel for this application1955 - 1982
PG42102004 346 5.7L (PASS) LS1S285M, S827RX-6, 3SR60FBCrank +/- 2,4,6,8 degrees
Retard -2,4
Both sprockets billet steel
4000 SeriesEnginePart NumbersAdjustmentsNotesYear