Originally Posted by kakarot09
Why? It should make gt35r power with gt35r spool and costs more than a gt35r. The compressor maps between them are almost the same and the hotside would be the same. The only possible benefit is the smaller diameter of the compressor wheel which although it may spin up very slightly faster if you look at the compressor map it has to spin faster to flow the same air anyway. I know that's all arm chair engineering I'm hoping someone has a back to back comparison to show why it's worth it.
Edit Actually I believe a 35r has more power potential than a gtx3576 and will spool the same if not sooner.
The GTX3576 will spool sooner that the standard GT3582R and have as much if not more top end power. The spool of the GTX3576 will be close to the spool of the GTX3076 and it will have more top end power. The wheel pairing of the 3576 is made for our 2.5 liter motors. I like it better than the 3076 with the 68mm turbine wheel vs the 60mm wheel of the 3076.
I am running the Blouch version of the 3576,the Dom 3.5XTR. The difference is the Blouch stock location version uses a 64mm turbine wheel (a wheel that Garret developed but does not use on any current models), Garrett CHRA vs the 68mm turbine wheel of the GTX3576. I am slightly handicapped by the stock location intake piping and compressor housing but have found that my set up spools as fast or faster than most of the Dom 3XTR's and makes more power. I made 400 ftlbs. at 4200 in 4th gerar on the PnL Dynojet with conservative timing because of some crappy unbalanced injectors I had installed at the time of tuning. After I sorted out the injectors and installed the ID 1k's I was making 28.4 psi (420 ftlbs.) at 3640 rpms in 4th gear and carrying 28 psi all the way out to my then 7800 rpm redline with no taper at all.
I know this is the Dom 3.5XTR and not the GTX3576 but really the the 3576 should perform better than my 3.5XTR given all the same conditions on my build. They should be the same price as the GTX3076 and more than the GT3582R. I would just shop around.