my new custom s480 setup!!!
Setup consists of:
Sbe lq4, ls9 gaskets stock 317s.
230/236 112 cam with dual .650 springs
Yank 3400 single disk built by circle d.
80E with shift kit and 3.73s
Turbo kit was built by me with a forced inductions billet s480.
4" downpipe with dumped 4" bullet.
Jgs 50mm gate and tial 50mm bov.
Treadstone 4" core intercooler and 3" piping.
Fuel setup is a dbrods cell with twin walbro 255s. One on a 4psi hobbs switch. Magnafuel regulator with siemen deka 80s.
[IMG]
[/IMG][IMG]
[/IMG][IMG]
[/IMG][IMG]
[/IMG] 2.5# was 495whp,
4# was like 540whp
15#did 817whp
this was with very little tuning just making sure afrs were safe.
i would guess 10# would be an easy 675 whp.

Im happy with the way this turbo setup come together. Was a long process. Should have done this along time ago!
It started building boost around 3k and was pretty instant after that.
Trending Topics
The Best V8 Stories One Small Block at Time

everything happened so fast I was like WTF! I do know when it spiked 15 psi it was trying to get some were. felt awesome for the a few seconds lol.
further inspection today showed it bent a rod on #1 piston. still trying to pull it out of truck for a lil more info. thank god it didn't come apart. I geuss that goes to show this boost thing is nothing to play around with. IF doesn't seem right don't try to build any boost!!!
I did notice my 2 rear passenger head ground straps were loose as well. What do those control?
Typically one would put the smallest spring in the gate and proceed with caution while data logging.
Or head straight to the dyno to dial in timing and afr.
Bummer man
Ron
ill just have to take baby steps with this boost thing for sure.
im in the process of tearing it down and installing a set of ls2 floating rods and pistons.
As for the JGS gate, the spring that comes with it is the light spring, it gave about 7 psi on my setup. The heavy spring is giving me 16-17 psi with my eboost zero'd out.
So 7psi with the original spring? Does my wastegate placement look optimal? It transitions pretty good into a y and dumps into the downpipe.
I figured i would come out better building my own kit. I could make it how i wanted it. Turned out pretty good. Easy to.work on as well.










