Tune up questions

72bluNblu said

Won’t go above 4k rpm is the orange box.

I went through several Mopar ignition boxes, old, new, whatever. The ones that aren’t good will start to break up over 4k.

You may try a chrome box, I had better luck with those, but the quality of the Mopar ignition boxes is only getting worse.

Click to expand...

this is my guess.

motor is fresh, cam is an oregon regrind, timing set was checked, springs are hughes. carb is from previous motor and ran great.

electronic ign is also a new variable and was swapped at the same time.

box or coil, but coil is new. so that leaves box or possibly distributor.