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How much H.P can this turbo support

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Old Jan 25, 2008 | 09:07 PM
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Default How much H.P can this turbo support

I just bought this set up a few weeks ago,I thought it was a gt 42. I asked mike turbo to find out more info on it and he said It came in a volvo application and It's actually a GT4594 with 70mm inducer i believe and T6 1.19 turbine housing. this kit is for my LT1. He doesn't have flow maps for those, he doesn't think they were released. My goal is 750rwhp. Is this turbo big enough for me ? What kind of hp should this support ? Thanks...
Attached Thumbnails How much H.P can this turbo support-gt45-turbo.jpg   How much H.P can this turbo support-gt45.jpg  
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Old Jan 25, 2008 | 10:05 PM
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its a pretty big turbo...

You shouldn't have any problem hitting 750rwhp.
I just picked up a pte gt4276 that supports 1250 flywheel hp, and i have a 1.12 ar.
If anything it may take a little longer to spool if its an older turbo, but shouldn't be bad.


Nice job, Chris
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Old Jan 26, 2008 | 02:04 PM
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O.K thanks, I guess I will find out when I get it going..
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Old Jan 26, 2008 | 07:29 PM
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A Volvo application? Off what a Volvo big rig? Its way bigger than what i'd expect in any production car.
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Old Jan 28, 2008 | 07:05 AM
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Did you buy the hotparts too? At first glance, it doesnt look like it will fit in the engine bay of an LT1 fbody.

As far as the turbo, it will be tough to push a 70mm to 750rwhp... unless you have a small motor. I'd expect a max of ~700rwhp with a 355-383ci.
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Old Jan 28, 2008 | 01:58 PM
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I almost mounted my turbo that way but, I felt the inlet would be restricted, and I couldn't find a way to route the down pipe. I think it looks cool in that direction.
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Old Jan 28, 2008 | 05:04 PM
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Thanks every one.. Can this 70mm inducer wheel be changed to a larger one If I send this turbo out to some one, or would I have to buy a differnt turbo ? thanks
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Old Jan 28, 2008 | 05:28 PM
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Will depend on the stub diameter and then if its a boreless or bore through wheel. Depending on that we could CNC it to something larger.
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Old Jan 28, 2008 | 06:34 PM
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DrTurbo, what would it cost me if I send this turbo to you, and have you look at it and tell me if it can be upgraded ? This turbo has changed hands a few times so I am not 100% sure of its size..How hard is it to pull apart and measure the wheel ? thanks..
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