Originally Posted by Tootall

It is. If you already have a 4.8, you do not have to get the complete 6.0 engine. All that you're going to need is the block and heads. THAT'S IT. All of your current parts, covers, intake, oil pan . . . . ya ha ah will bolt over. Lots of parts are interchangeable. I bought a "rebuild-able" 6.0 long block with covers for $500. If you end up buying a complete engine, you can always part out the unused parts later on.

cam - If you decide on a bigger cam, you're going to need springs rated for more lift. What kind/size springs all depends on your cam. A cam only motor would need some head work.

Cooling - the 28" will work, but if you're towing, and or desert like conditions, you're going to want the 34".

Originally Posted by nightrunner

first off you WILL NOT find a 6.0 long block for 600 maybe a bare block but not a longblock.

a 6.0 longblock w/ low miles will cost you about $1500, which is not bad

IMO waht you should do is get a 6.0 longblock and swap it out, do all the boltons, and add a radix with a 3.0 pulley and you have 450hp+ add in the flt trans and aftermarket locker and you have it made

6.0 - figure $2k to have a little room to grow
flt trans - $2500
radix - $5k
gears and lsd - $1k
tune - $500 on a dyno

and you have a reliable 450hp

Originally Posted by Yogi Bear

Kiserhd - Whatever you buy, if you are planning on FI, you will need forged pistons. Stock cast pistons + FI = KABOOM! Also, I'd be surprised if the salvage yard will take the extra parts off your hands. The yards like to handle complete motors and they shy away from individual parts like coils, injectors, and intake manifolds. A better source for buying and selling is here on PT.net, LS1tech.com, and E-Bay.

Originally Posted by kiserhd

So you really think ill blow it up that easily? I figured I would be safe at 7psi. Correct me if I'm wrong but aren't the pistons they put in our motors Hyper Eucretic or something crazy like that where they add silicone into the mix and you end up with tighter tolerances but because they do not expand like forged pistons your only safe up to 500hp. Now from what I'm calculating/hoping for is around 400hp, I assume that would be a safe zone. But then again I may have read wrong.