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Standard main jet for a list 1850 600 vac sec 4160 is a 66, so the carbs have been jetted up on the mains a fraction, where the PVCR should have been opened up if necessary.
The car needs to run up on a dyno to check the A/F ratios from idle to WOT.
Once the figures are established, the carbs are disassembled where necessary, and a few changes can be made in one hit.
Eg, idle rich, off idle rich, start of main lean etc.
Gary
Last edited by Gaz64; 02-28-2019 at 04:24 PM..
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