from what I've gathered it's pretty much a stock lq9 rebuilt bottom for much less as i called a few shops who sell reconditioned short blocks and ther asking 2500

 

The person selling this block that I'm considering is asking 1600

 

It could be rebuilt by some middle school drop out on meth that doesnt understand how to read a measuring tape lol. Oem factory untouched bottoms are known to last forever. Unfortunately my experience on rebuilt motors from professional shops hasnt been great...

 

i am running a 6.0 bored out .30 with milled 799 .30 and a 229/244 cam by BTR( spec'd out by him) . i am barely in the break in period with a base tune on 93 octane but we will see what she does once i get it fully tuned out, i am running ls9 head gaskets.

 

Maybe I missed some information but other than milling what oter work has been done to the heads? Bigger Valves? Ect?

With our CNC program and milling we can clear a 228r 600/600 on a 6.0 with heads milled 35 thousandths.

With heads milled that far I would definitely check to PTV before you take any advice from anyone. Motors vary, so your best best is to measure and see what you can come up with.

A.

 

Me either, across a number of platforms I play with. Every time I build a motor, it lasts less time lol

 

keep me posted on how well it runs please

 

that's very true I may just end up looking for a lower mileage 6.0. What about lq9 vs lq4 if I run my heads the only difference would be the pistons ?

 

I honestly dont feel the price difference between the 2 on the used market is worth finding an LQ9 over a 4, plus, 9's are getting harder to find in decent shape.

They made more 4's, but more went into neglected work trucks than anything else.

Best I can say is buy a motor from a rolled or rear-ended truck. Denali, Escalade, 2500/3500, 06 LTZ (?) Suburban, etc.

In short, buy what you can find, for the price you want to pay, in the condition you want. A cam and milled heads settles all the differences with a good tune, IMO