Quote: Yes the Hemi is tumble ports, something a lot harder (but possible usually at the expense of flow) to achieve with a wedge.
I also seem to keep seeing guys building the new hemi are claiming no difference firing both or only one plug, what have you found?
When you think about it--How can there be the same timing lead required when you have 2 plugs on opposite sides of the chamber? J.Rob
I know it makes sense but every thing I keep reading they say it don't make no difference on dyno or track even read about the guys developing it said it did not make more power but was done for emmissions I was curious if you had tried any with or without and what you found? Only reason I can think of to not change it is they are in really good locations already and the difference is too small to tell
Not talking about power. The topic was reduced ignition lead. Think about it--2 plugs on opposite sides of the chamber. Light them both off at the same time. How much time does it take to complete the burn from one side of the combustion space to the other? I bet it is a lot less time, which would equal less lead time required. We need to light the mixture ahead of the piston reaching TDC correct? Well it is not hard for me to imagine that if we light it off as the piston is approaching TDC that the piston will be experiencing resistance earlier than ideal. Now take the G3 and you can WAIT to light the mixture because it will burn completely in a shorter amount of time. Interchange the word WAIT with reduced TOTAL timing. This is how I see it anyways. J.Rob
even read about the guys developing it said it did not make more power but was done for emmissions 
I was curious if you had tried any with or without and what you found? Only reason I can think of to not change it is they are in really good locations already and the difference is too small to tell 
