Rocket Scientist
Grand Exulted Poobah
- Joined
- Sep 27, 2009
- Messages
- 6,720
- Location
- Spring Lake, Michigan
- Ride
- Black 05' Rocket III standard
I was surprised to find that my Dodge Magnum Hemi came with conventional spark plugs (2 per cylinder). I changed them at 150,000 miles just cause I was afraid I might not get them out. The new ones were 68 cents apiece. Should now last the life of the car. The 5.7 L hemi makes about one horsepower per cubic inch much like the Rocket. I think if you have two plugs you might not need all the wizardry. 