[ZLRob]

Well... You got the breathing mods present for bigger power.


I think the most important thing is setting the HP/ TQ goals first and then constructing your build from there. Do you want to be at low to mid 700's or is that what you're thinking all the mods you're talking about will make you? The cam specs you are talking about are bit on the large side and may not get you the output you are thinking it will. These engines perform incredibly well with smaller cams and that's been proven several times over. The type of cams that work very well with LS engines do not with our LT's so the philosophy of what works well has changed with the shift into LT engines. Especially when you are talking about positive displacement blowers on them.


Tailoring the fuel system to work with flex fuel is a tall ask, because what you ideally want to do is build the system based on the amount of ethanol you want to run and then from there you can add an extra 30% to total power output from there for standard octane. Not the other way around. Example, you see all the mods in my signature, yet with all that, my high side fuel pump is almost out despite being allowing an extra 10% to the high side additional running pump E85. My injector PW's and overall IDC's are getting up there as well on total allowable output before I'm out as well.


One corrective thing to mention is that if you go with a lower pulley, you need to go larger (more overdrive) on it to create more boost, not the other way around. Be careful running an upper. 2.3 and lower size pulleys cause slippage and it doesn't matter what you do to the general set up to try and circumvent it (even going LT5 01 rib tensioner set up) most of the time the slippage will remain.


I (and others here I'm sure) will be happy to help you out further in mapping your goals out, but I think the first thing that would definitely help is mapping things out with better concision and then moving forward from there.


One thing of a sidenote worth considering, Gabe is going to be doing a camshaft shootout event here pretty soon, like within the next month soon, which will get pretty darn good data on which one makes the most power, is the most efficient, etc... if you are torn on which one to choose, it may be worth the wait before you start investing in spending coin for your soon- to- be build.