Ok... I think I'm done with the wishy washy-ness over vehicles now... The truck stays, and the project drivetrain is in the works, for much less than I originally expected. My questions are, how much can a stock 6.0L block be bored over safely? It will more than likely come from a 99-02 or 03 2500 HD, or something along those lines. I was talking to a technician at the dealership I work at and he says that theres a coolant passage thats too near the cylinder(s) to bore much, if any at all. Says that a 6.0L is pretty much scrap if you blow it and need to bore. And what is needed to convert cable throttle to FBW if I get an engine with a FBW throttle body? Also, can this block be clearanced for a 4" stroke crank? I know theres a lot of guys out there with 408s, but didnt know if they had purchased an aftermarket block that maybe was a little different in some areas. Anyway, thats the questions I have. Hopefully in a year or two I'll have a well built, turbo'd 408 churning the tires. The original plan was a 427, but a 408 would be far easier and cheaper to build.

 

People bore them to 4.030 all the time. I'd imagine that you could go to .060 safely but wouldn't unless it was necessary. A 408 is a 4.030 bore and 4.000 stroke. A 4.100 stroke will fit but cause more clearance issues that aren't worth the 10 ci you gain. The cyl wall thicknesses on the 6.0's are about the same thickness as older sbc's that they have been boring for years.

 

30 is good, 60 is pushing it. It may work on some blocks, but not on all of them. You won't cut though at this point, but it will run dangerously close to a water passage.

4" cranks shouldn't be a problem. PM me in about a month and I'll let you konw. Hopefully less than that.

 

A 4" crank goes right in the stock block.

 

You should be fine with a 4.060" unless you plan on some heavy boost, then 4.030" would be better.

 

Always sonic test to see if there is enough wall thickness.

But it seems like .030 over is very common on the 6.0L's

 

Has anyone ever tried sleeving a 6.0 ci block?Why not just makeup some 4.125" sleeves?How about a 388cid screamer with a stock crank.

 

I don't see why not. I guess no one has wanted to invest that kind of money in one yet. Especially with Dart's new block.

 

I bet you could sleeve all 8 cylinders for less than a $1000.How about a budget 427 with a CI block and a Eagle 4" stroker?

 

No doubt. If it hasn't been done it probably will be done soon. For that matter you could do it with a 4.8/5.3 block as well. But with them you would definately get into water. No different than the aluminum blocks though. Most people going that route would probably opt for the more reliable and stronger Dart block. I know I probably would. What is another $1000 any more?