What is the difference between L92 and L9H

I know both of them are truck engines with VVT. The reason i asked this question i have L9H and i am looking for performance upgrades like CAM and tune but more info is available on L92

 

It's the flex fuel version of the L92, everything is the same except injectors which works out well for nodding since they're bigger.

 

i've been told since its flexfuel the fuel pump is a bit beefier for running e85

 

You'd be correct ^

 

the cam is different as well.

 

So can i use performance cam from L92 on L9H? Most of the performance upgrades avaliable are on L9h. Mine was brand new crate not sure what year it is.

 

depends if you're trying to use a vvt cam or not