Max Hp w/GT42/74

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Sep 23, 2009 | 12:29 PM

BoostnTBSS

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Max Hp w/GT42/74

well Am putting the S88 away for now and stepping back to a GT42 74 mm for now because i want it to spool a little faster for now (need my converter re-stalled) also i am getting alot of surging @ low boost (11psi and lower) and 12 psi and 2600lbs on the street is too much with the S88. so i have a brand new Gt42 74mm with 1.15 ex that will bolt up for now till i can get a custom 80mm built.. how many have gone over 650RWHP with a turbo like this? i will prob run a max of 18-22 psi just looking for some real data with a gt42 turbo..
348ci

Sep 23, 2009 | 02:46 PM

DrTurbo

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We have maxed them out around 700-750rwhp. Also check with some members here. They have ran them and maxed them out as well.

Sep 26, 2009 | 07:26 PM