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Old 05-26-2009, 09:37 AM
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Default Re: 5.7 turbo sizing

Quote:
Originally Posted by bulldog11267mad View Post
i was thinking about gt35 size but the have different trims and i dont know how you know wich one would work best for the engine you have is there some formula to know what is the exact right size?
It's not an exact science per say..... You can look at those compressor/turbine graphs all day and it will make you go crazy.

Since you are running two, you don't need to go nuts with the turbine A/R. A .63 or a .82 with the Vband option is what I would go with. The .63 will spool faster, but probably won't push the compressor as well as the .83 would.

As far as compressor, the GT35R is a 56 trim, .70 A/R as a standard... That's what makes it a GT35R

If it were me, I would go with the .63 turbine. If I were running a single turbo, I would run the .83

Have fun with the project, I would love to have the money to do a dual turbo setup!
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