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DavidG · 11-07-2019, 08:15 AM

As ronn indicates, initially the prefix was 'AB', which was used until engine number 62,387 when the 'A' was eliminated from the prefix. (Engines destined for big truck chassis used ABB and BB prefixes in sequence with the rest of the fours. Those destined for RHD chassis had a 'F' added to the prefix, as in ABF, BF, ABBF, and BBF in sequence with the rest of the fours.)

11-07-2019, 08:15 AM	#5
DavidG Senior Member Join Date: May 2010 Location: southeastern Michigan Posts: 10,101	Re: 32 ford frame stamps As ronn indicates, initially the prefix was 'AB', which was used until engine number 62,387 when the 'A' was eliminated from the prefix. (Engines destined for big truck chassis used ABB and BB prefixes in sequence with the rest of the fours. Those destined for RHD chassis had a 'F' added to the prefix, as in ABF, BF, ABBF, and BBF in sequence with the rest of the fours.)