76mm ideal size turbo for an LS2?
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76mm ideal size turbo for an LS2? Im looking to turbo charge my LS2 350z.....wondering what kind of turbo would be idea. I know that the 76 seems to be perfect for an LS1..just wondering if it would choke out an LS2....
It was recommended to me today that for a stock cube LS2 to go with the TC78 for street use and a PT88 for all out drag racing. Even with the TC78 you are looking at around 800rwhp.
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I want a turbo that makes full boost around 3,400 up to 6500..i dont plan on spinning the motor past 6500 even after I build it.. if a 76mm will work without choking the motor then id rather stick with that one..anyone have a side by side comparison of the 76 and 88 in terms of actual size?
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you should stop thinking ls1/ls2 and start thinking ci.
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346/364..i know the ci's. And thats exactly why I was bringing up different motors. I know an LS1(346) works really well with a 76mm. I was told by a few people the LS2(364) might be a little too big for the 76. Thanks for the informative post though.I wasnt sure if he was talking about the 370..or an LS motor in general.
So many things affect spool, its really a vague question. Down pipe size, compression, gear, ignition advance, AFR....
76mm would be perfect for what it sounds like you want to do.... but only you know what you want to do....
76mm would be perfect for what it sounds like you want to do.... but only you know what you want to do....
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yeah thats what im thinking..maybe even the 78..not much of a difference..but every little bit counts. How much boost do these LS2s take on stock bottom ends?
I wouldn't run boost without at least better rod bolts and even then anything over 10psi is pushing it IMO. That's why I want to just put forged rods and pistons in my motor. Since I only have 27k on the car I should just be able to hone it and use stock sized pistons.
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Im only looking for 6psi max on the stock motor...just so everything is up and running.
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On a completely stock LS2, i'd say to run no more than 8-10psi and put at least arp rod bolts and arp head bolts/studs in it. With perfect tuning and other things considered it will last "forever". Good luck with the build man 
Last edited by fenix999; Jan 12, 2009 at 01:45 PM.