Re: Hey john,how do you like the gt3071?what is the max - Saab Performance Bulletin Board - Saabnet.com
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Re: Hey john,how do you like the gt3071?what is the max
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Posted by John Williams [Email] (#1982) [Profile/Gallery] (more from John Williams) on Wed, 9 Jan 2008 14:57:41 Share Post by Email
In Reply to: Hey john,how do you like the gt3071?what is the max, fellow saaber, Wed, 9 Jan 2008 12:31:30
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I really like the gt3071wg .64ar, it does very well with the 2.3 motor and there was another guy that just dynod at sea-level and he made max torque by about 3700rpm and full boost of 23psi by around 3500rpm in third gear.
He made about 305whp and 352wtrq on a Mustang dyno. That would be about 340whp and 387wtrq on a dynojet.

That is about what I saw, 3500rpm in third gear, max boost 27psi, around 3200rpm in 4th gear. Most guys make around 340whp and 400wtrq with the gt3071wg .64ar. You can make around 370whp with the .86ar housing and 400whp with the larger gt3071wg .86ar with the larger 60mm turbine wheel and 4" inlet.

I think Terry made 405whp and close to 500wtrq on his 9000 with the gt3071wg .64ar.

My car made 385whp and 430wtrq sae in Denver or 320whp and 370wtrq uncorrected in Denver without my w/m injection on and about 23psi. I now run about 25-28psi with w/m injection and when I am racing I put in 104 race gas and add the "special" nitromethane mix that acts like a 50hp shot and it really wakes it up on the track. I have never dynod with that combo, but its a monster... :-)

Vigge just made 507bhp or 445whp with the gt3071wg with .86ar turbine housing on it and the 268 cams on his viggen.

The cams seem to allow for another 35whp or so and much better breathing up top, but its harder to get the sw dialed in for both good street drivability and good top end flow.

John

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