Try setting the timing up a little. That might help but it sounds like the carb is lean. Pull the top off & recheck the float level. It should be 1 9/32 from the gasket to the bottom of the float with the air horn upside down. You can tailor it a little by raiseing it to 1 8/32. Look at the main jet & the size should be stamped on it. When these carbs go through the rebuilders they mix up parts & applications. If its a 216 engine the jet will be around .052-.053. A 235 will have .055 to .058. You can go to a 1-2 thous. larger jet. Make sure the power piston goes into the hole & kicks the ball off its seat. They have been known to get bent.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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