Originally Posted by blackrat (Post 4262203)

ps coolers came on all the SS', Ws.6's, and Firehawks from 98 or 99 on. They came in every v8 in 02.

Very neccesary in ls1 cars since they are creating may more output then needed, so they heat up. The LT1's ps fluid reservoir is mounted off the engine so it doesn't have as much of an overheating problem.

The design of the cooler basically has a thin double wall. The coolant passes though the big tunnel, and the ps fluid is pushed through a maze of small tubes in that double wall.

Supposedly it's a decent system but auto-x'ers still tend to cook their pumps. Mine failed and allowed coolant into the reservoir, taking out an alternator and basically making my life a living hell before I figured it out.