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What size twins for stock cubes?

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Old 07-15-2010, 03:03 PM
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Default What size twins for stock cubes?

Im sure this has been beaten to death but search didnt come up with much.

Im throwing some ideas around and Im curious what turboes you would recommend for a stock cubed ls1. I was thinking a couple of 60s would work well but Im not sure. Thanks
Old 07-15-2010, 03:07 PM
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Twin PT67s on a stock bottom....

https://ls1tech.com/forums/dynamomet...+bottom+end%21
Old 07-15-2010, 03:12 PM
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Originally Posted by Mike@Diablosport
Holy ****! Ive never seen that much on stock bottom before. The tune must have been amazing.

Do you think 2 Masterpower t70s would be too much for me to spin? Im already running one with a .96 a/r which Im pretty sure is too big
Old 07-15-2010, 03:14 PM
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Precision 58's will make more power than it can take.We've made 800rwhp with these.
Old 07-15-2010, 03:15 PM
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What a/r would you recommend? Those 58s have 6 different options
Old 07-15-2010, 04:01 PM
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Why not just get a more efficient turbo to replace the Masterpower? Like a TC78 by Turbonetics or a PT88 if you want to go huge power.
Old 07-15-2010, 04:14 PM
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Im very happy with my Masterpower setup, it makes great power for what it is. Im mainly doing it because I can. We have long winters here so I need something to keep me busy for about 7 months. Trading out a turbo will keep me busy for about an hour. lol. Im going to be making a truck manifold kit and figured I may as well do something different. I was one of the first to turbo an fbody in the state, if not the first, so Im trying to mix it up.
Old 07-15-2010, 10:09 PM
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If thats the case just do twin Masterpower T70's with the .68A/R exhaust housings. You might get lucky and find someone to just swap a .68 for your .96. Then you only need to spend $600 on another MPT70. There is a guy on here with a stock 5.3 or 6.0(I can't remember now) with twin MPT70's.
Old 07-15-2010, 10:25 PM
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his name is tirefryin s10 he had a mustang with twins 70..
Old 07-15-2010, 10:37 PM
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How much turbo lag would there be with 2 70s w/ .68 a/r though?
Old 07-16-2010, 03:23 AM
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from reading tirefryins10's thread, I wouldnt want that set up on a stock cube LS1 unless it was purely a track vehicle. He was running 70's on a .68 a/r and I *think* he said he was all in by 4500 rpms, so knock off a few cubes and youre going to be waiting ALL DAY for boost, especially if you drop compression on a rebuild. go 60's, early boost and a killer top end!
Old 07-17-2010, 04:51 AM
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i have twin turbonetics tc61's ball bearing on a stock cube 8.6:1 CR ls1
Old 07-17-2010, 07:52 AM
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We would have to know what your plans are with the car and what you budget is to get the right size turbo's on there.



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