:: Pontiac not only put on Four Bolt Main Caps on their Fabled…
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Title: Pontiac not only put on Four Bolt Main Caps on their Fabled 1973 and 1974 455 Super Duty Motor but they also added two more braces in the Lifter Valley to stiffen up that incredible cast iron weak point.
Pontiac not only put on Four Bolt Main Caps on their Fabled 1973 and 1974 455 Super Duty Motor but they also added two more braces in the Lifter Valley to stiffen up that incredible cast iron weak point.
