Paul_J
Well-known member
I'll second the Megasquirt setup! Get the free 5.3l running and then start adding the upgrades as you can!
Use the 0411 PCM with the 5.3L. You can easily get 650 Crank HP with a single Master power T76 turbo ($750 brazil made not junk china) or two master power T61's. All you change in the motor is cam and springs (Use an 04 Z06 cam and springs) and up the injectors to at least 60lb ones. I have used both Megasquirt and stock PCM's and like the stock PCM for the simple reason of using the factory knock sensors. Then you can really lean on it and watch for knock. 18 psi boost with 18* timing (Methenaol injection over 10 psi) nets you about 650hp. we had a 4400 lb C1500 pick up running 11.90's @ 121mph in the 1/4 same set up. If you drop a set of 6.0L heads on it (317 casting number) you can go up to 24-25 psi due to the heads dropping the compression ratio down to 8.5:1 (stock 5.3L is either 9:1 or 9.3:1 depending on year) Give a shout if you need some info. [P
Well contrary to popular vote I ended up with a cummins. A buddy had a clean 89 cummins that he was willing to trade me for a tranny I had. Went today and picked up the adapter to mate the cummins to the 4l80e. Should be able to get the truck back to my shop this weekend and start mocking up the new drivetrain!
They aren't exactly a powerhouse, but those 160 and 180 6BT's were bulletproof motors..Keep in mind that motor weighs about the same as two small block Chevy's..
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