msd ignition

HELLO FELLOW MEMBERS,
I AM A NEW MEMBER WHO IS TRYING TO FIGURE OUT A PROBLEM I HAVE.I HAVE A 1995 S10 WITH A 350 IN IT.THE OTHER NIGHT WHILE RUNNING IT AT THE TRACK IT STARTED SPUTTERING AND BACKFIRING BAD.SINCE THEN I HAVE REPLACED ALL SPARK PLUGS WIRES THE TIMING BELT,TAKEN APART THE CARB, CHANGED ALL FUEL FILTERS,BUT NOW THE PROBLEM IS IT WILL NOT GET ABOVE 3300 RPM.IT DRIVES FINE NOW UNTIL IT HITS 3300 RPM AND THEN IT BACKFIRES AND SPUTTERS.MY LAST CHOICE I THINK I HAVE TO LOOK AT IS MY IGNITION.I HAVE THE MSD IGNITION,NOT TO SMART ON IT, I AINT SURE WHAT KIND BUT IT HAS A LARGER BOX AND A SMALLER ONE ATTACHED TO THE DISTRIBUTOR.MY QUESTION IS DOES THIS HAPPEN WITH THEM, AND COULD IT BE THE PROBLEM?THANK ALL OF YOU FOR YOUR RESPONSE.

do your msd box have a rev. limiter on it? maybe someone put the wrong chip in it, other wise it could be the msd ign. :confused:

Could be your distributor misstriggering the box. Loose wire from distributor to box. Bad ground to MSD, bad positive connection, bad igntion supply voltage to the box. Coil problem, bad connections to the coil from the box.
What type of distributor do you have, those mallory's can be a pain also. I haven't had good luck using them in conjuction with an MSD box.
Could even be a fuel supply problem.
Even had bent valves do that to me, but at a higher RPM.

thank all of yall for your replies.i ended up replacing the msd ignition with a accel super hei coil and just bought a whole new distributor and it solved the problem,still not sure if it was the actual msd ignition or the distributor though, but who cares i got it fixed now.thank yall.