bbr1628

Hey guys I was hoping to get some advice on rebuilding/upgrading my engine. I have a stock 5.7 corvette ls1 (15K miles, mefi 4 computer) in my dune buggy and recently had detination issues in 2 of my cylinders. Now that I have to rebuild it I figured I would add some hp (engine builder said the block is fine).

So what I've gathered so far is this:
asa cam 12480110 $450
ls6 valve springs gm 12586484 $70
chromoly push rods, length?? $130

What are your thoughts on this? I am going to put stock pistons back in and I currently have the 241 heads (are these worth having ported?). What length push rods do I need?

Any help is greatly appreciated!