on a 6.0 which do you guys think i should do? i know 862's will make the compression pretty high but i'm planning on e85 anyways so it'll be perfect and i know the 5.3 heads will need bigger valves and the 6.0 heads already have the bigger valves...i'm rambling now bottom line is this is a budget build and i'm looking to spray it some..what you guys think any suggestions thanks much sorry for the run on sentence! Paul

 

ttt.....

 

what i'm new so nobody will help?

 

please....

 

6L heads are plenty for a budget build. The 5.3s bump the compression too much for me, but the guy that works on my car runs a LS1 with 4.8s and spray. It really comes down to what you can find, how quick, and what is the cheapest.

Good Luck!

 

BTW heads aren't much of a concern for E85, but you need some big injectors! Personally I like lower compression motors as well.

 

thank you for your input anyone else i'm just gonna pretty much bolt them on and go with some new valve springs and that's about it so just trying to figure out which will make more power stock for stock head on a lq9

 

What does the rest of your setup consist of? Which cam, headers, intake, etc...

I would go for the higher compression if you are running a decent size cam. But the 317's have slightly better flowing ports(similar to LS6) than the 862's, so keep that in mind also.

 

317 casting all the way !!!!!!!!!!!!! you can find them for about $350.00

 

Some worked 317's would do you well....

 

well if i go with the 862's i can trade my 317's that i have for a lot of port work to a guy that does ls heads and as for cam i'm still undecided any recommendations there i'm kinda just diving into the ls world here lol oh and stock exhaust manifolds till i come up with the cash and a ls6 intake manifold