Ok, I know the topic might sound stupid, but what I am asking here is what exactly are the differences between and LB9 and an L03? Here is what I know:

Differences:

TPI - TBI
"081" good flowing heads - Crappy flowing swirl-port heads
Better Cam - Peanut Cam

Now other than that, what are the differences? I am asking because I am thinking of putting on a set of "081" heads on my 75K mile L03. Right now I have stock heads and cam, but if I put on the "081" heads I want a nice aftermarket cam to go with it. I have an LT1 cam, but with the TPI heads I want something better and brand new. I basically want an LB9 with TBI plus the mods already in my sig. What is your guy's word on this?

 

you could stick with that cam and it would run pretty good and the differents is about 20- 30 horse and 40 -50 punds of torque (depending on the years) as far power goes. Heads, Cam, and of course the intake is totally different. the blocks are the same....i think

 

Exhaust is larger on the TPI cars. IIRC LB9's would've had 2 3/4" pipes compared to ours at about 2 1/4". Could be wrong on those sizes though. Some LB9's still had the peanut cam, I think only T5 cars and G92 ones maybe had the L98 cam in them.

Just make sure you get headers and full exhaust, otherwise you'll choke any cam and heads you put on there.