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1969 BOSS 302 Alternator... Questioning assumptions

1969 BOSS 302 ALTERNATOR
The 1969 BOSS 302 started production on April 14, 1969 well after Autolite changed over to the die stamped front housing in late March 1969. Understandably there is a lot of confusion about what is the right alternator for the 1969 BOSS 302. Most assume it came with the 55 Amp C9ZF-10300-E die stamped alternator and the large 3.87" C5AF-10A352-H pulley that was on the 1970 BOSS 302. After all, it's what the MPC listed as a service replacement after 1969. 

So whats the right alternator? Research by Bob Perkins indicates all 1969 BOSS 302's came from the factory with the 42 Amp C6AF-10300-A Autolite alternator and the 2.88" C5AF-10A352-L pulley (pulley not 100% verified yet). We both believe its possible that extremely late production 1969 BOSS 302's had the 55 Amp C9ZF-10300-E alternator with the large 3.87" C5AF-10A352-H pulley. 

Bob also noted the heavy duty battery option still would have come with the C6AF-10300-A 42 Amp alternator. 

1969 BOSS 302 PULLEY
C5AF-10A352-L single sheave pulley is what we believe to be the correct pulley. The engineering number can be on the front or the back of the pulley. The reproduction 2.62" single sheave pulley made today to replace this pulley has a slightly smaller diameter and it doesn't look exactly like the originals but its the only pulley available.

CLICK HERE TO SEE PICTURES OF AN ORIGINAL C5AF-10A352-L PULLEY

Photo: Our alternator the 1969 BOSS 302 display engine at Anghel Restoration's 2017 BOSS 302 Open House