Forced Induction Superchargers | Turbochargers | Intercoolers

People with MP70s...

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Old 01-08-2007, 09:56 PM
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I have a MP T70 and made 565rwhp/595rwtq on 10psi through a 6spd on a 370 LS1.
Old 01-08-2007, 10:59 PM
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what kind of heads/cam?
Old 01-09-2007, 08:14 PM
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anyone else?
Old 01-09-2007, 09:32 PM
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Untouched 241 heads, LS6 cam...
Old 01-09-2007, 09:40 PM
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You know .. I thought a .68 would be too small also... Im sure the backpressure is a lil high on the high end.. but its barely ever there... its a street car... Like I said.. turbo ss ls1 is running a .81 on his 76... Its just better for the street... I would try .81 .. I guess if your looking for 3k and up .96 would be you best bet.. i start at 2400k..

... Ive read good things about divided housings if your looking to play around
Old 01-12-2007, 08:41 PM
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I got one with the .96 A/R...anyone have one on their 346/355? when does it come into full boost?
Old 02-13-2007, 01:26 AM
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Originally Posted by Snyper
I got one with the .96 A/R...anyone have one on their 346/355? when does it come into full boost?
Bump that, curious as well.
Old 02-13-2007, 09:53 AM
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me three
Old 02-13-2007, 11:09 AM
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Unit will come on around 3000rpms, and with a P-trim turbine wheel it will fall off up top due to backpressure if you plan to push it.
Old 02-13-2007, 03:06 PM
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so full boost by 3000?? I plan on spinning the engine to 6200rpms max and the compression ratio is 8.39:1....i shouldnt run out I hope??

Last edited by Snyper; 02-14-2007 at 08:57 PM.
Old 02-13-2007, 03:22 PM
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What would twins on a 408 do?
Old 02-14-2007, 08:57 PM
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Originally Posted by Snyper
so full boost by 3000?? I plan on spinning the engine to 6200rpms max and the compression ratio is 8.39:1....i shouldnt run out I hope??



dr turbo...someone?????
Old 02-15-2007, 10:39 AM
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Originally Posted by Snyper
dr turbo...someone?????

i had over 9 lbs by 3300 and it pulled to 6000, but it was running out of breath fast. On 15lbs it heated the crap out of the intercooler. And that was with a .96 hot side, on a 8.2:1 forged 370, with stock LS1 heads


it blew an intercooler pipe off at the 1000' mark and i hit the brakes not knowing what the sound was and ran the 11.2 @ 106 in my sig. (on 15lbs)
Old 02-15-2007, 11:36 AM
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Originally Posted by coop5885
i had over 9 lbs by 3300 and it pulled to 6000, but it was running out of breath fast. On 15lbs it heated the crap out of the intercooler. And that was with a .96 hot side, on a 8.2:1 forged 370, with stock LS1 heads


it blew an intercooler pipe off at the 1000' mark and i hit the brakes not knowing what the sound was and ran the 11.2 @ 106 in my sig. (on 15lbs)
Running it as a single I presume?
Old 02-15-2007, 11:48 AM
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turbo maybe too small for that engine?
Old 02-15-2007, 02:04 PM
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Originally Posted by DrTurbo
Running it as a single I presume?

ya it was a custom single front mount manifold kit. And as for it being to small it just depends on what you want to do with it. It was an awsome turbo for 500hp, but thats not what im after. Its in the shop now getting the PT88 and TH400 installed, so hopefully this year will hold single digits
Old 02-15-2007, 02:18 PM
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Originally Posted by coop5885
ya it was a custom single front mount manifold kit. And as for it being to small it just depends on what you want to do with it. It was an awsome turbo for 500hp, but thats not what im after. Its in the shop now getting the PT88 and TH400 installed, so hopefully this year will hold single digits


I think its best sized for a stock cubed engine. Theres someone who made 598rwhp with it by 5400rpms on cz28.com. My engine is only a 355 and im only looking to spin it to 6,000rpms max.
Old 02-15-2007, 04:07 PM
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i agree, when i bought the turbo it was for my 1st kit which was on my stock motor. When i switched over to the 370 it started running out of breath
Old 02-15-2007, 04:09 PM
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sounds like a good little street turbo
Old 02-15-2007, 05:07 PM
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twin mp t70s have worked great for me.



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