GT500/GT350: What does it mean?

jt14894

Member
Apr 6, 2005
66
3
9
Florida
Hey all,

This may sound like a stupid question, sorry, but what does the 500 mean in GT500?
Same goes for 350 in the Shelby GT350 of the 1960s.
Although I'm not an expert, I think I know a lot of about the history of the Mustang, but I can never find any info on what the GT500 or GT350 designation meant. Does it really mean anything (i.e. engine size, HP)?
Can anybody enlighten me on this?
Thanks!
 
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Legend has it, the 350 was the number of steps between Shelby's office and his shop or something to that effect. The Mustang 350's were all small blocks whereas the 500's had the big block motors but the numbers didn't designated horsepower.