Need help with turbo selection

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Oct 9, 2007 | 11:48 PM

GreaseMonkey83

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From: Marblehead, OH

Need help with turbo selection

Im trying to find the right turbo for my 4.3 vortec s-10. I know its not a ls motor but from my experience you guys seem to know your sh** on here compared to other forums that im on.

Im not trying make crazy horsepower or anything, Im basically looking for an increase in torque so i can turn the 33" mudders i just put on'er. wont be running anything higher than 8psi.

Im pretty sure i want to go with a T04E "57" turbo. Ive matched the garret compressor map to my application and it looks like it should work. I found a turbo for sale that says its a T04E turbo, 57 trim, .50 a/r.... but its not a garrett turbo. The garrett turbo compressor map that i was using was for a T04E 57 trim turbo with a .60 a/r. I cant find a map for the turbo i want to buy. So my question is, would the compressor maps be different for the same trim turbos, but one with .50 a/r and the other with .60 a/r? if not, do you have any idea where i can find a compressor map for a T04E 57trim and .50 a/r? Thanks for any help you can provide.

Oct 10, 2007 | 09:15 AM

sparkwirez06

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From: brunswick, ohio

Go to syty.net http://www.syty.net/forums/? They specialize in boosting the 4.3

Oct 10, 2007 | 09:29 AM

hellbents10

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From: Spring Lake, MI

I have turbo'ed a number of 4.3l's. The 57mm compressor wheel will work good, you will want a bigger exhaust side though. The fueling is the major problem on the 4.3l's though. It can all be worked around though.

Oct 10, 2007 | 10:37 AM

GreaseMonkey83

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From: Marblehead, OH

.50 a/r is the ratio for the compressor, the question i was asking was whether or not the compressor map for the turbo im buying is the same as the garrett with the .60 a/r compressor, they have the same compressor trim, T04E 57 trim, im just worried about the a/r. The turbine side a/r is .63 so i should be good as far as that goes.

Oct 10, 2007 | 10:42 AM

GreaseMonkey83

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From: Marblehead, OH

here are the specs on the turbo im thinking about buying:

Inlet- 3"
Outlet- 2"
Bearing- Wet Floating Bearings
Oil Inlet- 1/8 NPT Oil Inlet
Flange- Standard T3/T4 Flange,
Swaps- 350 WHP
Working Pressure:- 25~30 PSI
Compressor- .50 A/R Compressor
Turbine- .63 A/R Turbine
Compressor Wheel- .57 T Compressor Wheel
Exducer: 3"
Inducer:2"
Turbine Wheel Exducer: 2.2"
Inducer:2.58"
Hot Side- .58 5 Bolt Standard Hot Side

Oct 10, 2007 | 10:46 AM

hellbents10

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From: Spring Lake, MI

Little on the small side for a 4.3l. That turbo is better suited to a 4cyl motor. There is a lt better choices out there. Unless you are just looking for a really, really cheap turbo.