Originally posted by Mercracer
The 351W rpm intake is well known commodity.....to people who USE one, that there is fuel distribution problems with it. Without the carb spacer, you get rich looking plugs on some cylinders, and lean plugs on others...and some of the mixed-up plugs are on the same plane....let's say, betweem number 6 and 7 cylinders......
However, this problem does not rear its' head as much on stockers running this intake, it only seems to get worse as the airflow/fuel demand goes up with modified 351W's....
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