Well the carb is a Holley 80457. The jets are 65s and the power valve is a 4.5. Other than that, it is a stock fuel pump and intake. I did notice a huge gas smell when I would shut it off before. I am not sure if it's as evident now that I put the new power valve in. No black smoke that I could tell, but wasn't really watching for it. I bought the carb last year, and it probably only has about 6k miles on it, if that many.
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See my
1985 Mustang GT