Well, I've got a 99 model 6.0l and its going into the Wood Haulers 02 rcsb. Right now it has the 4.8 in it with the 4l60 of course. I want to get started building the motor, but need to know what is nessecary to bolt the 4l60 up to the 6.0. Any help would be appreciated. Also, how much can the cast iron 6.0's be bored or do I need to resleeve.

 

The 99-00 6.0's have a longer crank that won't bolt up to a 4L60E, you'd have to swap the crank for a later one or possibly get a custom torque converter. Here's a link with some helpful info: https://www.performancetrucks.net/fo...39#post3207039

 

You will need to change the crankshaft to a 2001 or newer model. You can use one from a 5.3 or LS1 but the balance is different. Most people say .030 is the max safe overbore on these blocks.

 

Where is the cheapest place to get a newer model cam. Also, has anyone one here offset ground their crank for a little more stroke?

 

HTC ( Hank the Crank ) does offset grinding for the LS1 style cranks. Not a huge amount of folks using them as this was before Eagle and others started offering low price ( $1000 or less ) 4" stroke versions. Lunati makes one of the best overall cranks for the GenIII motor but you will pay for it ( $2500 or so ). You do get what you pay for, but don't take it that the others are junk. Build a full on race motor and use the Lunati else the daily street drivers do fine on the Eagle or less expensive models.

 

i've never seen a crankshaft fail due to it being weak. Many of my harder-core race friends say the same. i've seen a rod let go and because of that the crank go damaged. crankwalk etc is an issue, but never actually seen a crank break.

It definately wont break if your setup is balanced and correct in other ways, like ktm said- dont waste big bucks on big buck a crank. Id personally run a stock one

 

Cool, thats what I was wanting to hear. I know that I am going with forged pistons, but will the stock rods be o.k. for 175 shot of nitrous?

 

judging by the size of the rod bolts, no. at the least replace those.

 

treyZ28....crankshafts will fail b/c of them being weak. they all have their limits. some crankshafts can only handle so much power before they'll develop cracks. once they crack, naturally they're prone to breaking.
ive seen cranks be cracked in good running engines, and yes they had full competition balancing.

there's a reason a Callies, Lunati, Crower, etc. crankshaft costs twice what an Eagle, CAT, Scat, etc. does. CHIP

 

The factory cranks theses days are strong as hell if Parish was able to make all that power on his 6L and also Harlan took his car into the 8s with a stock crank I think it will do jsut fine. I went with an eagle for the stroke not for necessarily the strenght but it does make me feel a bit better knowing its forged.