403 LS notch now billet84mm and LJMS cam 7.86@174.5 11-15-14
#182
How did you identify it was out of turbine? Do you monitor back pressure? Or is it the amount of gain you saw from adding additional boost? Amazing.
#187
down low its like 30-40whp per psi easily and up top its under 10hp per psi
so its something, i think its the turbine since its 403 cubes on a 96 turbine
i would be willing to bet the gt55 94/103 or whatever it is would make much more per psi and more top end
but the car is already exceeding expectation everytime we try, and its reliable as all hell, same spark plugs in it from the first time i dyno tuned it.
#188
#189
i dont think there is anything exotic done at all, just RMVB and brake
pressure mods i would assume but other than that.
#196
#197
#198
#199
The GT55 is bigger, but not that much bigger. I put a 91mm GT55 in my car this weekend where an S480 had been and while it took some massaging, it went into the same spot.