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s91 power capability

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Old Sep 18, 2010 | 07:32 AM
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Default s91 power capability

ive been trying to see what the s91 is rated at. it seems that alot of the information has been removed. i have a t6 BW s91 on a 408. I would like to also know if a larger wheel can be put it or if any upgrades are available. i heard about a s95 oor something.
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Old Sep 18, 2010 | 09:02 AM
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i belive its like 1500 + hp.
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Old Sep 18, 2010 | 10:21 AM
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Atomicfusion and Koolrays both ran mid low 8s with 3650+lbs race weight with 427ci.

Atomic made 1200+rwhp with mid boost and th400 the turbo is good for 1500HP For sure.
I think with your 408ci the S91 is more than enough to run mid 8s maybe even low 8s.
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Old Sep 18, 2010 | 10:05 PM
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Id say 1300rwhp.... I did 1132rwhp with the S88 with a 370ci motor thru a PG and a S60 rearend.
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Old Sep 19, 2010 | 09:43 AM
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thanks for the info, nassty-how much boost were u running and was that on the 6.0 heads?
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Old Sep 19, 2010 | 11:08 AM
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The S91 is very capable. I have a buddy who just put down 887rwhp with a S88 @ 12 lbs on his 408 and pump gas. The S91 should easily crack the 1000rwhp mark if your engine us setup to push the boost levels up.
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Old Sep 19, 2010 | 08:52 PM
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887rwhp was that with a M6?
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Old Sep 19, 2010 | 08:58 PM
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I'm with Nasty. Should be in the 12-1300 range.
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Old Sep 20, 2010 | 12:24 PM
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Originally Posted by cjg454ss
thanks for the info, nassty-how much boost were u running and was that on the 6.0 heads?
The 1132rwhp was on VA Speed's dyno and was 22-23 psi and yes that was on worked 6.0 heads.
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Old Sep 20, 2010 | 12:30 PM
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It took a lil more boost to make 800rwhp for me...with the 370ci. This is how i drove it on the street with pump 93.... 16psi and 817rwhp thru a A2 and S60/spool with 325/50/50 M/T ET Radials. Josh from Extreme..Sponsor on here ran 9.19 or so on my 93, S91 with a 408.
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Old Sep 20, 2010 | 12:40 PM
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Originally Posted by venom ws7
Atomicfusion and Koolrays both ran mid low 8s with 3650+lbs race weight with 427ci.
Mark and I are both using the garret GT55 91mm turbo's. His is ball bearing mine is journal. I weight #3750 he is a little lighter, I think #3680.
We have not reached the limits of the turbo's yet.
I am not much on the dyno thing, how fast does the OP want to go?
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Old Sep 20, 2010 | 12:44 PM
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Originally Posted by cjg454ss
887rwhp was that with a M6?

Th400. Dana S60.
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Old Sep 20, 2010 | 02:20 PM
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Originally Posted by koolrayz
Mark and I are both using the garret GT55 91mm turbo's. His is ball bearing mine is journal. I weight #3750 he is a little lighter, I think #3680.
We have not reached the limits of the turbo's yet.
I am not much on the dyno thing, how fast does the OP want to go?


Thanks for the info and again great runs.
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Old Sep 20, 2010 | 04:00 PM
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S91 will make the power you want.....

Our new S88 ET-R wheeled unit will make a little more then the S91 made . Also spools about 300-400rpms sooner
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Old Sep 20, 2010 | 04:46 PM
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thanks for the info, dr turbo- i have a jgs wastegate. 60mm, do you have springs for it. i think im pushing the gate open.
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