DragSource

I will be running an HX35 this summer on a 83mm b18a and I am trying to piece together my intake system right now (IM, tb, charge piping, etc). I am trying to figure out a good approximation of how far the rev's will drop between shifts in each of the first 3 shifts. . . 4th to 5th should't come into play.

I have the 14cm^2 turbine housing. . . w/ 2.5" vband out o2 housing, so spool will probably be slightly later than the standard 12cm^2 hx35. I may end up having to switch turbine housings. I'm expecting power from 4800 on up to 8000 (strictly speculation based on what I've read from other people's experiences), will I be pushing it as far as falling out of my power-band goes?

I'm hoping to only have to rev to 8k (don't want to take it much higher)

and before anyone jumps in with, "That's why I bought a GS-R" or "Just get a GS-R" or "Put a vtec head on it" - I would like to retain my LS head.

If someone has an RPM datalog of anything with an LS tranny, please hook me up.

Thanks for reading folks

s2kdre

are you using a stock head? cause if you are that head stops making power at6200 rpms. Now if you can rev it to 8k then gsr tranny would be perfect, my ls with a gsr tranny is short as hell but i love it, 1st 2nd gears are the same in a gsr and an ls 3rd and 4th and final drive are different.

turboEGhatch

Gear ShiftRPM Speed @ 8000 RPM
1st N/A 39.9
2nd 4706 67.8
3rd 5343 101.6
4th 6090 133.4
5th 5913 180.5

That's assuming a perfect shift at 8000, of course. In reality you're probably looking at around 4300-4500 RPM's shifting out of first and falling out of boost.

DragSource

I'm running a JG Pro Series head w/ Crower 403's.

I don't know if it will make power to 8k, but I'm hoping for the best. I've seen a couple dyno's from JG Pro heads that held to 8.5-9k . . .but I'm scared to rev that high.

Thanks a TON turboEG for posting that. Awesome!

It looks like I better just swap on that 12cm^2 housing before even hitting the dyno.