Ok i can get my hands on a ls6 block for 375 (good deal???) but could i bore it out to a 427? If so.. what kind of hp can i get out of this motor??

 

Without resleeving the block, which is some $$$, you can only go to 3.905" bore or there abouts on that block. Can get a 4" stroker kit and make it a 383 though.

 

Ok whats better.... The ls6 stock block with a cam and other stuff? Or maybeing building up like a 5.3 or 6.0? What could i make more hp. with?

 

Well just look at the cubes, man. While a 5.3 could make a really nice DD engine and get you well into the 13's or lower, there's no replacement for displacement. A stock LS6 is 346 cubes, a 5.3 is 325, and a 6.0 is 364. Purely looking at the respective displacements tells you that a better platform to build upon is a 6.0, but sometimes the entry fee into the 6.0 world is more than what some folks want to do.

An LS6 would be a fine engine to build if the price is right, but run the numbers to make sure you're getting the best bang for your buck. A 6.0 has more potential due to the 4" bore which will inherently flow better if you hold constant the set of heads, but still, an LS6 is waay better than a 5.3 if you're gonna build them the same.

 

man idk what to do im in va right and there is a bare ls6 block for 375 bucks.

 

It's up to you, man. If it were me, I'd sit on my money until a 6.0 in some configuration or another came along. If you're patient, you can get some killer deals out there.

 

how do u even know its a ls6? just wait for a 6.0 shortblock. i bought good running 6.0 lq4 shortblocks for 500$

 

X2 on waiting for a 6.0. I was going to have a stroker kit put in my 5.3 last year but I waited to get a 6.0, 3 months later I bought a 18K longblock LY6 6.0 for half of what I was going to spend on the stroker upgrade. Time is on your side, don't rush into purchasing an engine until you have checked it out, or had a mechanic buddy check it out if your not savy on internals like me.

 

you can pull the valley cover to see if it is a ls6 right?

 

no. 5.7 ls6 blocks had different main webbing windows. different from 5.7 ls1 motors. they also have diff. part no. and came in some 02 fbods also. my old 02 ss came with ls6 block