389 421 Super Duty
Found a series of old articles on Pontiac's Exotic Engines. It is a nice grouping of articles on the development of the 389 and 421 Super Duty, Ram Air IV, Ram Air V and the backroom development of what could have been the Ram Air VI and Ram Air VII.
Pontiac may not have been officially in racing but PMD engineering tried to succeed in spite of resistance from Corp. At times even their own management.
The Blackbird was a result of alot of this backroom engineering. Remember Jim Wangers asked Russ Gee for some of the parts to build the Blackbird as a "what if".
First the 389 and 421 Super Duty
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