Timing/plugs at 5280

[Monopoly]

I am going to reset the timing on the truck. From what I understand we need an advance of 6-8% at our height (Denver). I'm thinking 6% to stay on the safe side. This is on a stock motor. Thoughts?

Also doing new plugs, going with NGK UR5 or UR6 with .028 gap. Should I make any adjustment again with the altitude? Thanks guys.

 

[murdermachine]

Re: Timing/plugs at 5280

I am going to reset the timing on the truck. From what I understand we need an advance of 6-8% at our height (Denver). I'm thinking 6% to stay on the safe side. This is on a stock motor. Thoughts?

Also doing new plugs, going with NGK UR5 or UR6 with .028 gap. Should I make any adjustment again with the altitude? Thanks guys.

I run mine with a base of 8 degrees and .028 on the gap... works pretty good.

 

[TYTILIDIE]

Re: Timing/plugs at 5280

What are you guys thinking? Timing should always be set to 0. Your ECM advances and retards timing. Disconnect tan wire, set to 0, clear code plug tan wire back in and your golden. IMO, you're playing with fire advancing your base timing. Stock trucks I gap plugs at .35. Anything 20g and bigger I go .28. Unless you have MSD and a generally strong ignition.