I was wondering if anyhone has the r154 with the 430 diff I wanna how you guys like it I also am abojut to put the 7mge-t in my supra
r154 with 4.30 rearend
- Thread starter mikehockenberry88
- Start date
Is the compression ratio of the na-t still 9.2:1? If so I'd try the 4.30 diff.
I ask because typically if the diff ratio is too short the turbo may take longer to spool due to there being less load on the engine. But a higher compression ratio would help spool it anyways.
I ask because typically if the diff ratio is too short the turbo may take longer to spool due to there being less load on the engine. But a higher compression ratio would help spool it anyways.
Yup. it has all the gte shit on it the only thing ge is the shortblock I'm curious as to how it will run I wanna take it to a track and run it and I'm also curious aboujt red light! If it gets traction I think it would be awesome
Think about it, 3.73 vs. 4.30, at what rpms will you be at in either if you're going say 75mph. Still shouldn't be too bad considering the increased efficiency of higher compression.
So long as the 4.30 is a limited slip. All Canadian NA models had limited slip, in the US, it was optional.
If it's open, you're going to have a lot of trouble hooking that up.
If it's open, you're going to have a lot of trouble hooking that up.
Shitty highway gas mileage. 65mph = ~3000rpms. The speedo will also read faster than you're going
Eh who cares about the speedo being off just guess everywhere. It would rip shit though man 4.30.
Try and find a 4.1 speedo gear so it will at least be close. I have one in my setup and love that I can get out of the hole quicker. I am actually going to increase my redline to avoid swapping gears.
I'm running this now and my RPM seemed higher just cruising in town but lower at 85mph than when I had the 3.91. Also it did seem to get going quicker faster and I don't much need to go 100mph+
It's impossible to have a lower rpm at a given speed in a given gear when switching from 3.91 to 4.30, if everything is working properly.
- from my Archos 5 IT
- from my Archos 5 IT
In 5th gear, at 45mph I'm at 2k RPMs, at 65mph = 3k RPMs, at 75 = ~3500
4.30 is good for around town, but sucks for any sort of cruising speeds as you watch your gas needle become a reverse boost gauge :/
4.30 is good for around town, but sucks for any sort of cruising speeds as you watch your gas needle become a reverse boost gauge :/