Over the last 6 months or so my car has started to back fire in the intake "I think?" from 0 to about 3200 rpm then it clears up and runs strong. Now granted it has been neglected while I finished up school and started a new job and moved and has not beed driven hardly over the last 3-4 months plus it has 217k on the clock. A 347 with h/c/i is in the works soon, I just want it to run better so I can enjoy it untill im done with the engine build. Any sugestions would help out a ton. thanks..