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turbo for a 408 built short block with 10.8:1 cr

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Old 01-12-2010, 08:56 PM
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Default turbo for a 408 built short block with 10.8:1 cr

which turbo should i go with. will a 76 do it? will an s85 do it? gt4780? i put a call into drturbo, just waiting to hear back. decided id go open air with the question too.
408 lq9 built to withstand just about anything i can toss at it up to 1600hp. ls3 heads. complete fuel system.

05 gto, 6spd. looking for ~900-1000rwhp
street car
Old 01-12-2010, 09:48 PM
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Garrett GT91.
Old 01-12-2010, 09:50 PM
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ja ja jeezus.. almost thumper territory eh?
Old 01-12-2010, 09:52 PM
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Not really. Fairly compact for 91mm.
Old 01-12-2010, 09:55 PM
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spool characteristics? im not finding much nfo on this unit other than the price that FI gives
Old 01-12-2010, 10:15 PM
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On your engine it will spool very hard by 3300rpm if not sooner. It will be aggressive. The compression ratio along with the cubes you have will push that turbo nicely. It would make for a beaat with a good tune and gas.
Old 01-13-2010, 11:35 PM
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drturbo got back to me and recommended the s88... thoughts?
Old 01-13-2010, 11:44 PM
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The S88 is another good choice.
Old 01-14-2010, 05:03 AM
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05 gto, 6spd. looking for ~900-1000rwhp
street car
i have camro 6spd 408cid 10.3cr AFR heads 18 psi procharger F1C 850 rwhp

i think u cant with 76mm
Old 03-13-2010, 06:19 PM
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thoughts on twin ~70s ???
Old 03-13-2010, 09:44 PM
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You need the turbo I'm selling.

https://ls1tech.com/forums/parts-cla...od-t-tops.html
Old 03-13-2010, 09:48 PM
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Originally Posted by caindo
which turbo should i go with. will a 76 do it? will an s85 do it? gt4780? i put a call into drturbo, just waiting to hear back. decided id go open air with the question too.
408 lq9 built to withstand just about anything i can toss at it up to 1600hp. ls3 heads. complete fuel system.

05 gto, 6spd. looking for ~900-1000rwhp
street car

double o ring set up ?
Old 03-14-2010, 06:12 PM
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Originally Posted by TwnTrboCE
probly wont spool in my m6 on the street worth a ****...
Old 03-14-2010, 07:38 PM
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Originally Posted by caindo
probly wont spool in my m6 on the street worth a ****...
It would with a smaller AR housing. PM me if your interested.
Old 03-14-2010, 08:49 PM
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I was thinking about doing a turbo on my car, problem is i can only bring my CR down to 11:1 with 76cc heads and that can get sketchy.
Very intrested in your build and where it will take you.



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