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Re: 72 chevy 350 running rough under load!
definitely not the carb. the fuel/air ratios are right where they need to be. and the 1406 was always showing a very rich condition on the spark plugs, so a richer 1409 is not where i needed to go. this holly is definitely an improvement. and getting it professionally ported and built was a good idea. im pretty sure timing or valves are my issue. a leak down test is in order, then a recurved distributor. i'll let you know how it goes.
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