I'm not sure I'd want an intake with the TB opening on the back....an open element air filter sticking out of my dash would look kinda funny

But I bet it cures the #7 lean-out problem

 

Any updates on the LS4 intake working on the LM7, L33, LR4?

Flow tests?

 

get 4.8 pistons and put 243 heads on your 5.3 and use a ls6 intake and you have a more stout 5.3 then one of those

 

Just add a second 5.3 in the truck of that Monte Carlo SS for a 4wd rocket.

 

Trust me... you don't want the LS4 intake. Its a piece of garbage like the LS2 manifold only smaller. I was thinking of going with a LS6 manifold myself.

The LS4 has pretty much all the same basic parts as the truck engines such as 243 heads. There are no performance differences... only some changes so it will fit sideways in the engine bay. Also its an aluminum block... but I think they even have the aluminum block as an option for trucks now.