53bowtie

iTrader: (6)

No way to know for sure without you trying and reporting back but from much reading and research over the years, if you go any larger than ~220 cam in a 6.0 you will begin to lose low end which must be made up with a higher stall converter. However, the higher stall converter is not recommended for towing due to the excessive heat produced, especially under load, in the transmission.

This is why, for your application, it was recommended above to stay with a stage 1 or stage 2 cam for your needs/goals. When towing with stock sized engine you have to walk a fine line between camshaft/stall converter upgrades and towing. The bigger you go on camshaft, the larger you have to go on stall converter and gears to maintain, somewhat, the low end "grunt" due to the larger cam shifting the power band up in the rpm range.

As I said earlier though, I think you can get really close to 400 with the recommended mods and a ~220 or bit smaller cam....just don't want you to be disappointed if you do all this work and get 390 or 395 for example. Also, you will most definitely want long tube headers, a free flowing intake tube, electric fans, etc. (basically all the exterior bolt-on upgrades) to increase your chances of getting there....

03sierraslt

iTrader: (22)

The stage 4 is too large for towing, unless you plan to give up power below 3600 or so. Keep the cam smaller and it will pull better.

If you want towing power, go with their stage 1/2 cam and some ported heads, have the heads milled a bit to raise compression a tad and run a tight converter. A 2600 Triple disk converter. Don't buy a single disk to tow with.

Oh ya, and you are not going to see 400RWHP with a 6" lift and 35" tires unless you add boost or a stroker motor.

53bowtie

iTrader: (6)

Stage 1 BTR for sale in classifieds right now.......

https://www.performancetrucks.net/fo...hipped-549755/

M60gov20

iTrader: (1)

I may have jumped the gun a little bit. My converter is already on the way. Its a 2800 from curcle d. I'm not completely hung up on numbers. I do really love the sound of a good cam and some compression. I plan on dping the electric fans and long tubes and h-pipe. Frankenstein E.D. put together a nice estimate that I'm considering with his ported heads. Anyone else here running a set? Also if I talk myself into a supercharger who has the best deal on them? Would a procharger work good with my stall or stick to a positive displacement set up. I don't really see any kits that say they are for an 02? Will the 2003 6.0l Magnuson kits work?

M60gov20

iTrader: (1)

Got my stall converter in last night. A little tighter then I was hoping for but made a huge improvement.

M60gov20

iTrader: (1)

Thanks for all the input. After paying attention to how I typically drive it. I need the power down low. So I've decided to go ahead and get a supercharger. Definitely going Magnuson note sure on 1900 vs 2300.

rocknZ71

https://www.performancetrucks.net/fo...2500hd-539463/

Check out this thread. Similar trucks and goals.

ZR1 DREAMING

iTrader: (28)

Good deal man! You might skip the cams mentioned above then since you've decided to go with a roots SC. There's some other BTR cams that will work for you, and the LS9 cam would be a decent budget cam that will work too.

M60gov20

iTrader: (1)

Yeah, I'm going to hold off on the cam. The supercharger and probably long tubes. Going to call and see what all is different other then the blower in the 1900 vs 2300. I think the 2300 come with 8 rib belt and maybe bigger injectors but I'm not sure. I think the 1900 would be plenty for me but if I need to go with bigger injectors and or pullies then maybe I should just do the 2300?

bobfig

Imo you should be ok with that setup. They are just trying to save you some money. The heads while are great the 317 ar good with a cheep mill job for $50 to bump compression and maybe a little clean up on the runners. As for the cam it should be fine and the bigger 6.0 should be able to handle it better then say a smaller engine. However having a larger cam os going to move the torque up the rpm range and could be worse when having to tow at 2500-3000rpms vs something a little lower.

Another thing that would help is look at getting a nnbs truck intake as they flow a lot better then the older nbs style.