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NarcoSS messed up LS3 Procharger Build

779 Views 11 Replies 4 Participants Last post by  Samuelbeast123
watched this page for god knows how long and figured it’d be time to write one of these things up…

2020 bought this truck with a bad trans and a “built” 402 stroker. About a year later the transmission exited the chat, and shortly after so did the LS2 due to a bad lifter.

Went full ape 💩 and got a RPM Level X and a FULL pull out procharged LS3 full fuel system and all.

After about 2 years bc life happens (medical issues, drainage pipe burst @ the house, and a 2yr old boy that runs my life) my buddy decided to help me out and get this b**** back on the road. Currently got the old engine out and going to transplant the new LS3 😁

A little background: This is a street truck. I plan that 95% of the time it will be cruising or picking up the little one from school not to far. The idea has always been to overbuild to under power. Might mess around @ the track every now and then, but mainly built to mess around on the highway.

I am a marine tech and don’t mind wrenching. Already used to using four letter words and being crunched under fat pigs 🐖 either for the water or road lol.

I have my challenges and am ready to experiment (ie: battery & ecu relocate, running AN fuel lines figuring out how to make a Fore fuel pump from a Camaro SS possibly work with our truck , dropping new engine, and some figuring if I run air 2 air or air 2 water)

so here we go…

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These are common and sold by a number of big small and diy places. Huron speed offers a popular one specific for the tbss,(don’t buy their overprice harness) there is an individual that builds double and triple setups for GM platforms on Facebook, etc.

If it doesn’t have the nor use the factory bucket, I would think you have no choice but to use a hydromat or other fuel bladder system?
depending on which procharger you’re going with, I think you can get buy with a single 450 or 525. Unless you’re looking to go balls out 700+ hp?
Those are the 3 main one really. Holley, the tbss specific Huron kit and the guy that builds his own on Facebook. In dual and triple setups and can work with the factory bucket in some cases…. He don’t recall his name off hand. If you’re part of some of those LS truck groups or tbss society he is usually mentioned or posts there. Chris something?
You have two choices about the battery charging sensor.

Run a ground from battery directly to the front with your positive. Use a busbar or terminal post and hack the battery terminal for a copper lug crimp. This way the sensor still does it’s thing and you remove like 50lbs off the front end and really clean up that area… you can make a small simple ABS plastic plate or sheet metal plate to hold the bus bar.

second option, ground from your battery to frame. Then up front frame to battery. Make sure you clean that area really well to bare metal, use a large ga wire, copper lugs and make sure you use some dielectric grease and paint the connections after to weather coat it. Because there are more points of connections, there is increased chance of ground issues if you had water intrusion. Still use a busbar or terminal bus to join new ground wire to old battery terminal.

here is a busbar example that will support up to 200A.

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