That's encouraging to hear! Running an A1000 (overkill) and 42# marine injectors.
Dyno tuning this truck is a pain so I wanna make it count so along with the pulley and j tube/ tb change id like to get a better cam and upgrade the injectors to support e 85.

So a 2.8 blower pulley, 90mm J tube and throttle body, better cam and big enough injectors for e85?

 

All of this, yes. FWIW, those 42# injectors are probably already maxxed out if you're revving to 7K. They should be on the top of your list. Cam would be the least important thing on your list.

 

No doubt, I know the injectors don't have any room for growth much less e85. I'm gonna go ahead and get a TB coming and decide weather to cut my j tube flange off and weld a 90mm one on or just open the existing flange up. I think I'll go with an Edelbrock cable driven TB that has LS1/ LS2 dual bolt pattern for flexibility.

If a better cam, along with these mods will net seat of the pants results I want to do it because I only want to go to the dyno one more time. If the truck was dyno friendly I wouldn't mind doing this in stages.

If a cam upgrade would be negligible, I'll pass on it.

Thanks for the suggestions and advise guys, I'm considering it all. I have more questions about what type of OS to run and what type of exhaust system to build but I'll wait on those til I've got the above mods done or at least in the works.

 

Also is Leftcoast the only vendor with RIP cut pulleys? If so, I'll give them a call. Their website is under construction.

 

The cam could be worth it. It really depends on what you are after. Ideally where would your shift points be? Do you run a converter? What rpm is it most important to have the most power? How would you feel about an idle with a little lope to it? Basically, how do you use this thing?

 

I typically shift around 6800-7000 by ear. I tap the 7k limiter often. I run a 2400 stall 10" converter in my TH400. 2:1 transfer case and 6.72:1 axle ratio with cut 44" tires.

Where do I want the power? That's really hard to say. I guess I'm ok with the power it has down low. I think where I'm always looking for more is probably 3500-6500.

When I'm playing in 2wd it will blow the tires off in 1st and it's decent in 2nd. Third gear will bog the engine down. In 4wd I only have 1st gear because it will fall on its face in 2nd. I'm looking to blow the tires off in 2wd thru 3rd gear and thru 2nd in 4wd.

As far as how I use the truck... think of a purpose built burnout machine, except in the mud. I do not compete, there are way too many 600"+ and blown alcohol big blocks in town for my little 325" LS to compete. I basically just use the truck to sling the **** out of mud.

Lope at idle? I'd love it as long as it doesn't hurt the way it performs.

 

I think the truck would run a lot stronger with something along the lines of a vinci trucker. The trucker won't give you the same over rev that the z06 does because of its earlier valve events despite its larger duration. It would hoever make that truck a LOT stronger in the mid range through north of about 6k RPM where the z06 would catch up and I would expect the trucker to pull in a 5.3 to about 6400 RPM or so max.

Too Tall has a cam for sale right now that would work well too and be better to higher in the RPM range. You should check if its still available... it would really work well in your truck. You could also use a tiny bit more converter. Something closer to a 2800 to pop you right in the meat of the torque curve you just enhanced and it will feel like a totally different ride right off the line.

Your mid range would be strong enough between that cam, the pulley changes, and the J tune that I don't see thing thing ever bogging down. Hell Roger took his ECSB and 5.3 11.7 with that exact combo.

 

Dude! Y'all are getting me excited! Billet 90mm TB from C6 Perf. is ordered. I'll look Too Tall up and check on his cam. Cam profiling is like black magic to me. I can do alot of things, understand cam profiles... not one of em' lol!

I'll get on the horn Monday and get a pulley coming. Before the dyno I'll have to do everything were discussing here, build the trans, build two wheels so i can bolt on some dyno friendly rear tires and pressure wash for 10+ hours. Got alot of work ahead of me!

 

And I was short shifting it at 5800ish because I was out of injector at 5500 rpm. Lmao! With less boost and the smaller stock throttle body, the injectors didn't max out until 6400 or 6500. In my 5.3 the trucker pulled hard from idle to 6500.

OP, if you have any questions, just ask. I'll try to help.

 

Thanks AK! Will do!