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Twin turbo 5.3

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Old Dec 6, 2015 | 05:18 PM
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Default Twin turbo 5.3


Plan on putting twin turbos i have off of a 14' Cadillac sport in a pickup but I can not find any specs on the turbos, I know they were on the 6cyl engine but with a stockish 5.3 it should be enough, right? I'm thinking they should spool up pretty quick, probably going in a 97 gmc 4x4 or a 76 chevy.


Appreciate the any info


Last edited by l_r; Dec 13, 2015 at 10:43 AM.
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Old Dec 7, 2015 | 06:01 PM
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anybody? If these will be too small Im going to sell these and buy another turbo
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Old Dec 8, 2015 | 02:05 PM
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Pull the covers off and measure the wheel diameters. (comp and exh wheels) Then we can help you...
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Old Dec 13, 2015 | 10:51 AM
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Edited with measurements, truck will be a 97 gmc 4x4 with small tires, 4l80 and stock 5.3 with good gasket and studs, shooting for 500-600 at the wheels, also will be spraying methanol after 8-10 pounds probably , what size intercooler would yall recommend? This will be a 2wd appearing street truck with little track time, thanks for the help
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Old Dec 13, 2015 | 11:39 AM
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I'm on my phone so I can't see the measurements very close, but I don't think those are going to support 600 to the wheels. I'm not sure they would support 500 at the wheels.
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Old Dec 13, 2015 | 11:46 AM
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So like 43mm compressors. 45mm exh wheel exducer? Hard to tell on the exh wheel, looks like the caliper isn't on the minor portion of the wheel. Either way 43mm compressors are pretty tiny. You can get decent sized turbos that will meet your goals for $128 each. I wouldn't bother with those.

http://www.ebay.com/itm/T04E-T3-T4-6...BV3AbE&vxp=mtr
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Old Dec 13, 2015 | 12:21 PM
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Okay that's what I needed to know, I'm sorry it is not on the minor portion of the wheel, didn't know I needed to measure that part, guess I'm gonna get a pair of on3 gt30's then, appreciate the help as I'm new to the ls world, I come from the outboard v6 two stroke world lol
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Old Dec 13, 2015 | 04:15 PM
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If you're gonna spend that much I'd Try these instead, much better potential. S366 clones...

http://www.buyautoparts.com/buynow.a...FQgaaQodRFcMBA

Compressor

Compressor: 66 mm inducer / 91.4mm exducer, with exclusive Extended Tip Technology.


Turbine

Turbine: 80 mm inducer / 73 mm exducer. Cast in Inconel 713 for high-temperature operation
Turbine: .91 A/R Twin Scroll, with 'T4', divided entry, and 4.21" v-band discharge.
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Old Dec 13, 2015 | 04:35 PM
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Originally Posted by Forcefed86
If you're gonna spend that much I'd Try these instead, much better potential. S366 clones...

http://www.buyautoparts.com/buynow.a...FQgaaQodRFcMBA

Compressor

Compressor: 66 mm inducer / 91.4mm exducer, with exclusive Extended Tip Technology.


Turbine

Turbine: 80 mm inducer / 73 mm exducer. Cast in Inconel 713 for high-temperature operation
Turbine: .91 A/R Twin Scroll, with 'T4', divided entry, and 4.21" v-band discharge.
How many people are running these? They look quality but does anyone have real world experience?
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Old Dec 13, 2015 | 04:44 PM
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OP is talking about ON3 units which are also china. They will be as good as any other china copy IMO. Hopefully the S366 copies use some newer wheel design castings.
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Old Dec 13, 2015 | 05:28 PM
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I think I want a t3 flange since I am doing twins, unless towing a little (light boat) will affect which one is more desirable. I'm not sure on what size to get, does wanting launch in 4wd affect what wheel size I need? Forgot to mention it will have a cam in it
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