i need motor date help

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It's at least an 89 & a car motor but that's all you can tell from that. The date code will be stamped into the block, a 4 digit number, i.e. 3B20F.3B20 = February (B) 20, 1973 (3). The F is the assembly plant code.
 
Gavin, I had a 351C in my 72 Mustang. Built the top end, blew out the bottom, so rebuilt it too... and man did it HAUL! Changed out the rusty cragars with keysone classics...



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351c 2v heads on a windsor block will mod I think. 600cfm carb. breaths real good. Turn some big rpms. Been so long I cant remember the details. Might be the Aussie heads.
 
LaRue, my best friend in high school had a '73 Mustang, same color except his was a "Grande" edition with a tan vinyl roof. Loved that car- wish I had it today! :banana:
 

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