I think you'll find the coil fires one plug at a time, governed by the computer. On the motors with plug wires, cylinder 1 is fired by the coil for the main power stroke. It also fires cylinder 6 for its secondary power stroke. I believe the newer setups handle this via the computer.

 

why wouldnt they just put a msd box on it instead, real v8 only have 8 plugs

 

For all the reasons that have already been discusssed. The Hemi head is the worse design and would never pass emissions if it weren;t for the 2nd plug, plus the 2nd plug allows the use of more free flowing cats. Free flowing cats means saved money for Chrysler too.

IMO, it was a patch job from the beginning and rather than to spend millions of dollars to redesign a newer more efficient head, they stuck with the patch that ended up saving them money. win-win for them.

The parts I didn't copy/paste stated how terrible the cooling direction is and how bad the angles were for the pushrods/valves for the Hemi and that it would have taken a few years to resolve the issue's. Something along those lines.

 

lol i was just pulling your chain
i knew i could get someone started lol

 

Thats not the way I read it at all, and it would be impossible for one coil pack to fire on two power strokes in two different cylinders anyway.

 

Even more interesting is that the second plug should be platinum if not irridium, as suggested by the manufacturer.

I'm going to get a Chevy next... they are far superior in their manufacturing process and only have 8 spark plugs.

 

That is interesting...and so is this information about the 1990-1995 Chevrolet Corvette ZR1:

"The LT5 was so radical, that GM could not even produce it their selves. It was partially designed by Lotus, but was actually hand build by the Mercury Marine Company in Stillwater Oklahoma..."

Does this prove that Chevrolet (General Motors) has a far superior manufacturing process?

How about the fact that this engine (LT5) has 16, yes 16, fuel injectors AND 32 valves (four per cylinder). All this to produce ONLY 375 horsepower from a 350 c.i.

I will gladly consider my, 16 spark plug/16 valve 345 horsepower from 345 c.i., Chrysler Corporation Hemi to come from a good manufacturing process.

 

Apples to apples now... what was Dodge making then?

What is Dodge making now and what is Chevy making now?

Just pulling legs again -- lastrights was right, that was fun.

 

Okay, you got me.

I just get a little defensive when someone takes a jab at Chrysler.

 

No it's not. It's called a multiplex circuit. Most of the connectors inside the cab and a few under the hood are run off of Multiplex circuits which means that one wire can control several devices. There's Multiplexers and De-multiplexers and yes those do the opposite. De-multiplexers have several signals controlling one device.
Multiplex circuits send binary codes through out logic gates to decipher which circuit to activate and for how long. It's amazing and rather complex stuff.