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Roadster #3358K, Spec Racer #2889 SP, Daytona Sypder GT #4569GT (#8 of 39).
I bought a holley jet kit that has very jet from 66-100. I need to down size the jets in my carb. I don't know what size jets they are. So, I need to find the size of the jet I have in the carb and match it to the Holley numbering system. Then I can start experimenting with the holley sizes.
Old #66 could be 66.1 thru 66.9 , so now they rate them #660.
1989 Mustang S-trim supercharged opentracker
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