340 tune specs

The original factory spark plugs for the 3.3L/3.8L minivan engine will fit and work well also. They are champion platinum plugs. They were put in the minivan engines because the rear bank plugs were difficult to change, so they used a platinum 100,000 mile plug in them.

They changed the spark plugs for the 2001 3.3L/3.8L engine and later to a tapered seat and no gasket. Those will not work. Only the pre 2000 and earlier plugs will interchange on the small block. I've been using these for years with no problems.