Hey guys not a f150 question but I know you guys are pretty good so here it goes...I have a 83 302 out of a mustang and it is now in a mazda/courier. It runs laike a scalded cat but sometimes has a random missfire. The ignition is a cheap procomp for the time being, could that be my problems?

 

I would check the timing and fuel pressure.

 

thanksfor the reply,I have put a new dura spark in it and a msd box which almost completey fixed the miss. Since i dont have a manual for the engine,anyone have a sugjested base timing to start with? Thanks again for the help, and yes the truck is a blast.

 

10° BTDC after you pull the timing plug on a warm engine. You can run up to 14° if you are willing to run premium fuel for a little more power.

 

using a msd box for ignition so no timig plug but the same still?

 

the box does not affect timing you still do it the same way..