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I have a 65 coronet with a 440 that puts out an estimated 525hp. I have a holley black electric fuel pump with a holley regulator. -8 is ran to the regulator and -6 to the carb. I set my fuel pressure at 6.5 and it slowly drops down to about 3. I initially thought it was from heat so re-routed the lines to the carb, but it still does the samething. Any ideas on what it could be or what to check for. thanks



If you have a liquid filled guage take it off and throw it away. Get and non liquid filled guage. The liquid guages change with with the barametric pressure and temprature. It will read 6.5 one minute and 2lbs the next. They will drive you NUTS .