Planning out my turbo build

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06-02-2014, 06:44 AM

#11

JUSTINTHECOASTIE

Join Date: Oct 2008

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Quote:

Originally Posted by baZurk

At 12psi with the s256 I made 440whp. With e85 I think you could easily make over 500 but not much past that.

Great information, at what rpm did you see full boost @12 psi?

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06-02-2014, 06:47 AM

#12

baZurk

Join Date: May 2012

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Quote:

Originally Posted by JUSTINTHECOASTIE

Great information, at what rpm did you see full boost @12 psi?

On the dyno it looked like 4k rpm's but in higher gears I can hear my wastegate open at 3600-3800 rpm's when going full throttle from cruising at 3k or so. This turbo creates a very useable power band.

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06-02-2014, 11:29 PM

#13

S3X2K

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Now I've heard the divided t4 housing with a 1.22 ar is best, is that true or should I look into a non divided?

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06-03-2014, 03:36 PM

#14

staylor725

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Sounds good for 500 with e85, but I would work on the diff first nothing like having 500hp and cant drive it the way you want. I justed picked up a 99 corba 8.8 diff going to try to make it work .good luck

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06-04-2014, 06:42 AM

#15

kaptaink2002

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With a GTX 3076 on a completely stock AP1 at 15 psi on 93 octane I made 453/295 so I don't see why you shouldn't be able to meet your goal of a higher torque number