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Autolite 104's

fri3dchick3n

fri3dchick3n

New member
I have my scheduled tune on the 21st. I have everything besides my plugs. So I went looking around where I live and none of these stores carry any spark plugs besides stock heat range.

This really got me upset, so I instantly went online and ordered six of them. I think I might have grabbed a heat range too cold.

How much would 104's affect my car from 605's?

And what gap should I gap them at?

Mods will be: SD Headers, 3.4 MPS, shift kit, no cat, 180 Tstat, intake.
 


And actually 605s are a step cooler than stock.606 are stock.

The 104s would be good to have on hand though just in case.
 


Changing your plugs to get rid of knock is a bad idea.

You should run the correct plug for your mods so that it burns nicely.

This means you're not leaving fuel economy on the table nor leaving "KR reduction" on the table.
 


I've only messed with gap once when I got blowout. I still check them though but have never had to change them.
 


So I got my 104s in the mail today, and I am going to drop off my car to get tuned tomorrow morning. I need to install my 104's in tonight so the car can be ready. I am still a little unsure on the gap size of the plugs. I was thinking maybe somewhere around .050. Any suggestions for the gap size, it will be for a 3.4" pulley.
 
60 thousandths, not 600 lol. There's a huge difference between .060 and. 600 lol. I'd like to see the ignition system that could run a gap that big.
 
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