Turbo and Injector size

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Feb 15, 2008 | 03:34 PM

gremjimi70

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Turbo and Injector size

I have a 5.3L, I want 550-650 hp what size turbo(single setup) do you guys think and can the stock 28lb injectors be enough?

Feb 15, 2008 | 03:43 PM

ninetres

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From: Mufflerville, CA

Quote:

Originally Posted by gremjimi70

I have a 5.3L, I want 550-650 hp what size turbo(single setup) do you guys think and can the stock 28lb injectors be enough?

No. Get 60lb injectors.

Feb 15, 2008 | 09:01 PM

gremjimi70

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42?

What about 42lb would that be enough?

Feb 15, 2008 | 09:14 PM

Grr

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From: Fargo ND

get 60# injectors, or go carbed, simple as that

Turbo, for that power 70mm would be fine
Gary

Feb 15, 2008 | 10:59 PM

ninetres

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Quote:

Originally Posted by gremjimi70

What about 42lb would that be enough?

Did you miss post number 2? Go back and re-read

Feb 16, 2008 | 04:29 PM

kbracing96

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My 42's in my 4.8 are maxed out at 12lbs boost and making 505rwhp

Feb 16, 2008 | 04:32 PM

99SS-T

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500 is about as far as u wanna push 42's. Mine were nearly at 100% duty cycle at the 531 i made when i still had 42's. You dont wanan be near 100% as that is insuring that they will fail over time. Get 60's. Its not much more and its WELL worth it.

John

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Feb 16, 2008 | 10:00 PM

dredoggy

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here is a site for turbo size calculations hope this helps. http://www.smokemup.com/auto_math/turbo_size3.php

Feb 16, 2008 | 10:14 PM

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Sideways240sx

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From: Byron, IL

60's for sure. 28's might be fine for a heads cam/wet shot to hit 550rwhp, but not in a boosted app.

If you dont get the 60's you will wish you did, and your not gonna sacrafice any driveability with them.

Good luck, Chris