I swapped metering rods on my #1406 for more power. I put in a set of #1455 rods, which is about 6% richer than stock on the primaries. It takes all of five minutes to swap rods, just look in your owner's manual. I haven't tried to jet the secondaries richer, but i proably will soon....
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
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