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6-5/8" Pontiac 389, 400, 421, 428 & 455
Part
#: 650401 |
4 Bolt pattern on 3.300 bolt circle
Pulley holes must be re-drilled. 1969 & up timing cover may be required on early models.
Internally Balanced
Black Zinc Finish |
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6-1/4" Iron Duke 4 Cylinder
Part
#: 620101 |
151 CID (2.5 Liter)
Internally Balanced
Black Zinc Finish |
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