243 Heads

[Smoky02]

I just picked up a set of 243 heads for my truck. I've been reading on here and I'm trying to put all the pieces of my build together. My truck is going to be a DD that I would like to have some pretty decent power. If I run the LS6 heads stock with the BBK SSI intake and the 228/230 588/591 lift cam will it make good power? Or is there something that I should do to the heads to make the best of that setup.

Thanks in advance,

Brandon

[skeet]

its always a good idea to have the heads ported!! seems like youre gonna have a sweet setup there, i take it this is on a lqx engine ?

[Smoky02]

Well I had thought about running that setup on my 5.3. But I'm debating on using a 5.7 instead.

[Smoky02]

Would that setup run on a 5.3? i know the compression will be 9.1 to 1, but is that going to be a problem or is that a high enough CR?

[Tank]

Its high enough, but not optimum. Good daily driving

[Show&Go]

Id think 10 to 1 would be a good cr to shoot for at least... lq9 comes stock with it so it gives you a idea of if its streetable....

[Smoky02]

Well I'm looking at running a 5.3, and with these heads it's not even close to that cr...

[Show&Go]

Mill em down a lil. Less you have plans for a much larger motor with those heads or FI

[Smoky02]

What's a lil? How much can I mill off of these heads? And if I do mill them and later won't to put them on a 5.7 LS1 is the cr gonna be way to high?

[truckinL33]

What's wrong with a little compression? Makes things alot more fun on the street...