Turbo selection help!

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Jul 22, 2020 | 03:46 PM

GreenMachine19

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Turbo selection help!

So I purchased a car already partially built that om trying to finish this year. Boost is new to me and I need some insight on what I should run. Engine is a 5.3, btr 660 springs, TI retainers, moly PR, and stage 4 turbo cam, 234/239 .612"/.610" 115+5. It has a full on3 kit now with hotside installed. Will be ran with a stalled th400. Any help is appreciated, thanks!

Jul 23, 2020 | 02:22 PM

stevieturbo

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From: Norn Iron

I think you should use this

https://www.garrettmotion.com/racing...x5544r-gen-ii/

Jul 23, 2020 | 02:30 PM

973800CamaroRS

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From: Thurmont MD

I'm assuming you are working with what you have. I would assume also that turbo kit has a T4 flange ?

Jul 23, 2020 | 02:35 PM

GreenMachine19

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Correct, it has a t4 flange. Vehicle came with the base on3 70mm .70 ar. From what I understand this is just entirely too small and will choke the engine on the top side. Especially since the cam is going to want to make its power up top.

Jul 23, 2020 | 03:05 PM

94heritage

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With that cam it needs like an s485 from forced inductions. If it was a street car i would swap the cam and install something more street friendly s475/87 in like a t4 1.10-1.24 housing.