APS F body 427 cube twin turbo system - coming soon
03-27-2008, 05:57 PM
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03-27-2008, 06:58 PM
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i am building a 6.2L(377) with 225 afr heads. now are you telling me i wont make 1000 horse on 18lbs of boost?
please help peter
03-27-2008, 07:51 PM
#45
The standard APS are supposed to flow 50 pound of air per minute which usually works out to about 500 engine hp per unit or 1000 ENGINE HP ,about 850RWHP on standard car at 15% drivetrain loss.
These bigger turbos do like 1000 or more RWHP or 1150 hp but thought heard 65 pounds per minute which would be 650 engine hp or so per turbo or 1300 max engine hp. So definitely bigger turbos.
Now APS is not using your standard type garrette exhaust manifold so would have to say that gt35R would not connect up without some adapter or different exhaust manifold.
I would not be overly worried about a 370 with good parts being able to hit 850 or so rwhp at 18psi . APS has hit that number pretty much on their standard turbo dyno with their forged 346, lingenfelter gt11 cam, fast 90 and 90 tb and afr 225 heads.Check thru the old threads. They got a bit more on more tweaked 20 g turbos on same engine. Remember their dyno reads a lot lower than dynojet as Peter has mentioned several times.
I am pretty confident will get 850rwhp out of my 408 combo maybe at 15psi maybe 18psi. Now the turbos might start dying off top end and may not put out as much boost on the 408 as smaller 370 or 346. Guess the proof of the pudding will be when my combo is finished. JM also is going to be dynoing again at think 14 or more psi.
His car is an auto though so will show less at the rear wheels.
Guy has to decide how much hp they really need. Past a certain point is simply bragging rights on most cars at these levels of power. Do you really think you can hook up 1300 engine horsepower?? Good luck trying.
These bigger turbos do like 1000 or more RWHP or 1150 hp but thought heard 65 pounds per minute which would be 650 engine hp or so per turbo or 1300 max engine hp. So definitely bigger turbos.
Now APS is not using your standard type garrette exhaust manifold so would have to say that gt35R would not connect up without some adapter or different exhaust manifold.
I would not be overly worried about a 370 with good parts being able to hit 850 or so rwhp at 18psi . APS has hit that number pretty much on their standard turbo dyno with their forged 346, lingenfelter gt11 cam, fast 90 and 90 tb and afr 225 heads.Check thru the old threads. They got a bit more on more tweaked 20 g turbos on same engine. Remember their dyno reads a lot lower than dynojet as Peter has mentioned several times.
I am pretty confident will get 850rwhp out of my 408 combo maybe at 15psi maybe 18psi. Now the turbos might start dying off top end and may not put out as much boost on the 408 as smaller 370 or 346. Guess the proof of the pudding will be when my combo is finished. JM also is going to be dynoing again at think 14 or more psi.
His car is an auto though so will show less at the rear wheels.
Guy has to decide how much hp they really need. Past a certain point is simply bragging rights on most cars at these levels of power. Do you really think you can hook up 1300 engine horsepower?? Good luck trying.
03-28-2008, 01:17 AM
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Peter
03-28-2008, 01:24 AM
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Thanks,
Peter
03-28-2008, 01:27 AM
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03-28-2008, 09:40 AM
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We have a GT 3582R dual ball bearing turbo (from our C6 ZO6 twin turbo system) that will bolt up to the F body turbo exhaust manifolds though you would need to install a smaller starter motor to fit those larger turbos. By the time that you buy those turbos, starter motor and adaptor mount I very much doubt you'd get any change from $4000.
Peter
Peter
Anymore cutting for clearence? Would the down pipes be the same?
I'm not looking to do this right now but it could be in my future. Thanks.
03-28-2008, 12:18 PM
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but when you get a turbo upgrade price let me know. also could we just change form the mit g20. to the g21 or g22(i don't remebewr the next size) cuase the housing body is the same size?thanks
03-30-2008, 06:30 PM
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Depends on the engine flow.............I'd say between 950 - 1000 dyno jet rwhp with a good cyl head, cam, intake combination.
You just need to install a smaller starter motor to gain more clearance to the turbine housing and I'm told that the down pipes do not require any modding.
Peter
You just need to install a smaller starter motor to gain more clearance to the turbine housing and I'm told that the down pipes do not require any modding.
Peter
03-31-2008, 05:26 PM
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Peter
