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yes thats a nice street and strip cam......
so ur saying the popping is from the exhause not the carb,,,,please try this in park,,,and let me no what happens,,also im thinking you may have some...

I GENERALLY THINK IF YOU DO A TROUBLE SHOOT ,,STEP BY STEP...YOU SHOULD BE ABLE TO FIX THIS PROBLEM ,,IT SHOULD NOT TAKE MORE THEN 30 MINUTES TO FIGURE OUT WHATS GOING ON,,,MAN I WISH I WAS THERE?TO...

I BET YOU GOT THE 992 VORTEC HEADS,THEY ARE THE BEST FLOWING HEADS FROM THE FACTORY,, POPPING NOISE ,,GENERALLY COMES FROM THE VALVES,IF YOU GOT IT IN PARK AND SLOWLY REV IT UP..WHAT HAPPENS?
ALSO...

whaT ABOUT THE PUSH RODS!IF THEY ARE BENT .THIS HAPPEND ALSO.
SO TELL ME ,,IS THE MOTOR FRESH? OR DO YOU GOT MANY MILES ON HER?
THANKS..

HI,
I HAD THE SAME PROBLEM AND WHAT HAPPENED TO ME WAS MY CAM LOBES WORE AND CAUSING THE VALVES NOT TO OPEN AND CLOSE PROPERLY...ALSO MAKE SURE YOU GOT THE VALVES ALL ADJUSTED PROPERLY!!!!HOPE THIS...