t4 s475 on a SBE 6.0
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On The Tree
Joined: Jul 2011
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t4 s475 on a SBE 6.0 So I have been toying with the idea of turboing my car this winter, and drunk me decided to go ahead and order a turbo last week. Seriously didn't even know until I logged into my paypal to make a payment and saw the charge...
So I ordered a VSR S475 clone, T4 1.10 AR. I'm not trying to set the world on fire, so I assume this turbo will be fine for my goals, but what will its characteristics be on a SBE 6.0? Right now I have a large N/A cam in it that will obviously be coming out now. Was looking at the stage 3 summit turbo cam to replace it. Hoping to make ~650-700whp on pump 93 keeping the RPM's under 7k. Will that be possible?
So I ordered a VSR S475 clone, T4 1.10 AR. I'm not trying to set the world on fire, so I assume this turbo will be fine for my goals, but what will its characteristics be on a SBE 6.0? Right now I have a large N/A cam in it that will obviously be coming out now. Was looking at the stage 3 summit turbo cam to replace it. Hoping to make ~650-700whp on pump 93 keeping the RPM's under 7k. Will that be possible?
On The Tree
Joined: Oct 2012
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I feel like thats too much cam for that turbo. I would go with something along the lines of the summit stage 2 turbo cam or the high lift truck cam summit offers 218/227 600 lift. I run the exact same turbo on my 5.3 just a genuine borg not vs and it makes 650hp on 20 psi. It is great driving on the street and on an even bigger 6.0 it oughta light really quick.
What cam is in it? You'd likely be fine leaving it in with those goals. Don't over think it. Id say if anything, call up Viren and ask if you can exchange that one for a small fee and go with the T6 S475. Would work better with a larger cam anyway and its less cost and effort to change than changing the cam out.
Thread Starter
On The Tree
Joined: Jul 2011
Posts: 100
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What cam is in it? You'd likely be fine leaving it in with those goals. Don't over think it. Id say if anything, call up Viren and ask if you can exchange that one for a small fee and go with the T6 S475. Would work better with a larger cam anyway and its less cost and effort to change than changing the cam out.
Thread Starter
On The Tree
Joined: Jul 2011
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And what was the limit of pump 93? I plan on staying on pump as well, as I spent big $$$ on an aeromotive stealth II tank which kind of limits my pump options - pretty much ruling out e85.
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It took out the top of the piston #7 on 9#'s and 15* @ 11.5 afr. It was an unopened bottom end other than removing the dod stuff, adding turbo cam and springs. I think I had a good bit of back pressure because I tied the down pipe back into the stock exhaust and mufflers, there were probably multiple causes. I'm in the process of getting it put back together.
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Verdad Gallardo Usually nipping the top off is rings butting. Hose it down with a healthy amount of water/meth and keep timing down to 10* below 5500 to start. Then get a good plug read and go from there. There is no "go to" answer for a safe tune up. Gotta start low, read plugs, and give it what it wants.
Usually nipping the top off is rings butting. Hose it down with a healthy amount of water/meth and keep timing down to 10* below 5500 to start. Then get a good plug read and go from there. There is no "go to" answer for a safe tune up. Gotta start low, read plugs, and give it what it wants.
Also even if E85 isn't an option. YOu may try using an ethanol content sensor and blending in smaller percentages. E50 is some powerful stuff and less demanding on the fuel system. Even 30% helps alot.
Thread Starter
On The Tree
Joined: Jul 2011
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Yessir 83x75. I was going to use a pair of up and forward headers but they dont fit with my P/S location so I am gonna try out the hooker manifold setup. This is all in a 71 cutlass.
My car is flex fuel from the factory, so I may give that a try. We don't have any E stations around my house.
It took out the top of the piston #7 on 9#'s and 15* @ 11.5 afr. It was an unopened bottom end other than removing the dod stuff, adding turbo cam and springs. I think I had a good bit of back pressure because I tied the down pipe back into the stock exhaust and mufflers, there were probably multiple causes. I'm in the process of getting it put back together.
Agree with frcefed, spray it down and it'll be happy. Stock48 went 8.9x on that turbo I believe, 1st time out. But went 157 and only 16lbs! also seemed to run on magic unicorn sauce, because no one else has come close to those numbers @ 3350 that I know of? I think his "mild" home ported heads were pretty dammed amazing. I remember he was saying that turbo was tapped and struggled to make over 16lbs on his motor. Meaning that engine had to be making over 500 NA. None of his stuff adds up! But is damn impressive... he helped me alot! super great guy. 2nd time out he had the Billet S476 and set the SBE record at the time at 8.3 and 163.
My 5.3 T4 S475 was tapped at around 20lbs and i pushed it to 24, basically pushing hot air as it picked up about 1 mph. That was with an LS9 cam with a butt ton of negative overlap @ .050. Was at 2.8:1 if I recall back pressure wise. Def not happy! 8.9xs at 153ish. Around 3000lbs.
Actually I had it set to 11*, but didn't know there was a table in the E38 under minimum spark that was set to 15* above 4k rpm... So it was 15* straight across on the datalog.