mine towed 6000lbs+ lbs in overdrive with 3.73s and 33'' tires without a problem. Didn't even downshift over some small hills. (nothing crazy, michigan is pretty flat)

 

well i am in the works for te 6.0 30 over build so i will be able to give you some numbers in about 3 to 4 weeks

 

Cool. Mine seems to tow in OD for most small hills, just unlocks TQ on most. My trailer is 9000 lbs, 4.10's. Just on larger hills it still has a hard time in 3rd and often needs second if big hills.

 

Well, I've gathered up most of my parts to finally get going on this project (Callies DragonSlayer 4.0" stroke crank, CompStar 6.125" Rods and -18 CC Wiseco pistons plus gaskets, etc.). I've got a good seasoned 6.0 L block and I'm going to have the machining done in about November. I've been trying to decide what to do on my heads (keep my hand ported cast iron heads or go to some new design small intake runner heads). I'm looking forward to finishing this project as I've been planning it for about three years.

I'll keep you posted on the project.

Steve

 

I just took my block (plus my crank, rods and pistons) to Patterson Racing in Augusta, KS. They are going to align hone the mains and size them for about 2.5 thousandths oil clearance on the mains, deck the block at 9.230" and bore and hone the block to 4.030". Then I'll build the long block over the winter or early in the spring.

Steve

 

Sounds good. What did you decide about the cylinder heads?

 

I'm planning to go with Patriot Predators when they become available. I believe that they will have all of the right features (thick deck, five angle valve job, better rocker arm clearance, etc.) at an excellent pricing point. I like the fact that the customer will be able to choose the combustion chamber volume (I'll go with 72 cc). I plan to go with the smallest intake runners that they offer for the highest velocity. Since this build is all about torque below 5,000 RPM's and my HP will probably not peak too far away from 5,000, I want the small runners. Much of my driving will be at part throttle anyway so I don't need big runners.

Also, I bought an LS6 Valley cover and I plan to change my PCV system to avoid pulling the crankcase vapors directly out of the valve covers.

Steve

 

Puts you right at a 9.5:1 compression ratio with the zero deck, -18cc wiseco's and the 72cc heads. Sounds like a torque monster. Sweet!

 

Cam choice?

 

You can easily out-do it with small runners, just FYI. a 6.0 is a relatively large engine that can really pull down some air. If you have a cam designed to give you max torque at 4000rpm (for a redline of ~5k), thats still a good amount of air to move. Dont size them with golf *****, but dont get carried away either.

sounds cool though, I think you'll be pleased with the end result.