Forced Induction Superchargers | Turbochargers | Intercoolers

Garrett GT40

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Old Sep 25, 2004 | 06:13 PM
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Default Garrett GT40

Has anyone used this turbo on a stock cube LS1 with any success? I did a search but didn't find too much on the new GT series in general. It seems like everyone is still sticking witht the T-series.

How would the GT40 67T with a .81 A/R turbine spool on our engine? What kind of difference does the Ball Bearing option really make on spool time? I've seen claims of 300-1300 RPM sooner. If it's 300 RPM it's not worth the money IMHO.
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Old Sep 25, 2004 | 06:32 PM
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here is a map for the turbo. What kinda psi do you want to run. Also how high do you want to spin the motor.
Here is what u need to know to find out if this turbo will work.
http://www.forcedinductions.com/consumption346.htm
Attached Thumbnails Garrett GT40-gt-40-full.jpg  
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Old Sep 25, 2004 | 06:38 PM
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Goober, I've looked all that up before but thanks. I wantto know how it will spool, ie what RPM wil it spool to, say, 7 psi as a general number?
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Old Sep 25, 2004 | 08:38 PM
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The 408 we just installed a GT-70 on spools quicker than I expected. I was told, it is the GT wheel that makes the difference. It spools faster than my 60-1 on my stock LS1.
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Old Sep 26, 2004 | 12:45 AM
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It'll spool pretty quick but what's the point, the gt40 won't flow enough air on the top end to support the ls1.
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Old Sep 26, 2004 | 12:47 AM
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That is y i posted the links. But that bitch would spool quick.
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Old Sep 26, 2004 | 08:41 AM
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In that case, would the 42 spool as quickly, that one would definitely flow enough air... keep in mind the only turbine A/R available is the1.15 and that is huge.
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Old Sep 26, 2004 | 09:14 AM
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Originally Posted by Eight Ball WS6
In that case, would the 42 spool as quickly, that one would definitely flow enough air... keep in mind the only turbine A/R available is the1.15 and that is huge.
The 42/42R will not fit in your car without major modification. This would include cutting your car.
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