340 tune specs

340sFastback said

With vacuum advance unhooked try 13 BTDC at idle for the timing. Plug gap is .035". You can go to rockauto.com and look up the plugs. I prefer Autolite brand spark plugs. They work great and are cheap. A lot of Walmarts have them too. Stay away from Champions and the more glitzy plugs won't buy you anything.

Click to expand...

It just crazy all the different stories flying around. Back in the day Everyone always said use ONLY Champion plugs in Mopar. They were OE Plugs and always ran great for me. The along came Autolite and everyone said they were the Co. that Made Champion(or Visa Versa). I always used Champions in My Cuda 340 and it ran great. Same in my Cuda 360. The A/L's also ran great. Now I hear this and It just blows my mind. Not trying to bust balls but Id like to see some proof that A/L's are good and Champions aren't.