Check out this link for the three types of Dura-bond am bearings for LTx.
http://store.summitracing.com/egnsea...115+4294889104

My engine has the standard and performance and wants to know what I want to use. I cant find a clear cut answer to if the performance bearing is just better performing or longer lasting.

I am building a new 355 LE2 with about 400RWHP and I want a cam bearing that will last. Longevity is higher priority than power when it comes to the cam bearings.

What about these coated ones, they sure cost a lot more.
Anyone want to chime in?

 

I'd spend the few extra bucks for the better bearings. The bearings just went out on my .383 set-up causing damage to the crank and the block.

 

Use the performance bearings, you don't need the coated.