So I'll start a thread here for LSX based motors with power adders EG: turbos and blowers. I am horribly slow at updating stuff but I will try to stick with it. I am by no means an expert on the subject and there are a ton of guys building more power, going faster etc but I will share what I know.
5.3L T72 turbo set up:
This is about as basic as it gets. A bone yard LM7 5.3L engine is 9.4:1 compression and has heads comparable to the older F and Y bodies. Some even had 243 heads on them. It does share the same stroke crank as the 5.7 and 6.0L engines of the same family but with a smaller bore. I will post specs later on in the thread. Take this motor stock, swap to an 04 Z06 cam and springs, upgrade to 60 lb injectors and add ARP rod bolts. This is the extent of your internal mods. Use the truck maniflods pointing forward, build a Y pipe to a T4 turbo flange and add a Master Power T72 .86A/R turbo. These run right around $650 and are not the cheap Chinese junk. You are going to want to go to 2 wlabro 340 fuel pumps or an Aeromotive A1000 pump. Use a 1:1 boost referenced fuel pressure regulator as well. Add an ebay 24x12x3 air to air intercooler. Next part is a Methenol injection set up. I like to run a progressive style with it's own map sensor. It comes on at 8 psi and ramps up the pump speed as the boost goes up. You will need a 2 bar MAP sensor as well. Run a 50mm-60 mm waste gate. Too big will hurt you way less than too small. Keep boost to about 18 psi and keep overall timing under 18 degrees under full boost. The 0411 truck PCM is easily tuned for boost and the nice part is you can use the GM knock sensors. They spent millions calibrating them so why not use them. You can set the PCM to ignore a couple of counts of knock (2-3) but any more and you will run the risk of pushing a ring land off a piston (ask me how I know!) This set up on 94 octane pump gas and 100% meth (don't run a water mix) will net you around 600-630 crank HP all for under $4500 if you do all your own work. Don't let it knock and it will live a long time.
5.3L T72 turbo set up:
This is about as basic as it gets. A bone yard LM7 5.3L engine is 9.4:1 compression and has heads comparable to the older F and Y bodies. Some even had 243 heads on them. It does share the same stroke crank as the 5.7 and 6.0L engines of the same family but with a smaller bore. I will post specs later on in the thread. Take this motor stock, swap to an 04 Z06 cam and springs, upgrade to 60 lb injectors and add ARP rod bolts. This is the extent of your internal mods. Use the truck maniflods pointing forward, build a Y pipe to a T4 turbo flange and add a Master Power T72 .86A/R turbo. These run right around $650 and are not the cheap Chinese junk. You are going to want to go to 2 wlabro 340 fuel pumps or an Aeromotive A1000 pump. Use a 1:1 boost referenced fuel pressure regulator as well. Add an ebay 24x12x3 air to air intercooler. Next part is a Methenol injection set up. I like to run a progressive style with it's own map sensor. It comes on at 8 psi and ramps up the pump speed as the boost goes up. You will need a 2 bar MAP sensor as well. Run a 50mm-60 mm waste gate. Too big will hurt you way less than too small. Keep boost to about 18 psi and keep overall timing under 18 degrees under full boost. The 0411 truck PCM is easily tuned for boost and the nice part is you can use the GM knock sensors. They spent millions calibrating them so why not use them. You can set the PCM to ignore a couple of counts of knock (2-3) but any more and you will run the risk of pushing a ring land off a piston (ask me how I know!) This set up on 94 octane pump gas and 100% meth (don't run a water mix) will net you around 600-630 crank HP all for under $4500 if you do all your own work. Don't let it knock and it will live a long time.