Hello all,

Looking at a parts truck to pull the engine and trans to rebuild for my truck, without taking my truck off the road.

My truck is a 94, 1500 light duty with EGR. The truck I'm looking at "might" be a 97 or a 98. I intend to get a chip flash to remove the EGR functionality as well as a number of other modifications. The sensors and IP will all be transferred to the new longblock, to keep OBD1 (unless someone can give me a compelling reason to swap?).

I heard that the 98s had an updated block with piston squirters (which I absolutely want), so does anyone know what year they came in? Any idea if the block casting is otherwise improved structurally in these trucks?

The new truck has an external oil cooler, but strangely the panel-style air cleaner. I thought the cone filter came in 1996, so maybe I'm wrong?

The truck is a mutt, but the price is right and all I need is a decent core for the rebuild.

Any help would be greatly appreciated!