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11-13-2009, 09:23 PM
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Junior Member
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Join Date: Nov 2009
Posts: 2
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turbo 5.3L or 402
i want an honest opinion. should i build a 402 and drop it into my 2wd silverado or should i turbo the 5.3L i have now? i have a few bolt ons and a tune but i want power. i changed the rear to a detroit tru trac with 4.10 yukon gears. just asking an opinion and seeing which way to dump 4500 bucks.
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11-13-2009, 09:48 PM
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Paid Off
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Join Date: Aug 2007
Location: Gramercy
Posts: 448
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front mount turbo imo bc you can always upgrade motors later vs spending 5k on a motor then another 5k on a turbo..id rather the front mount turbo now then build a motor later
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11-13-2009, 09:50 PM
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Your God
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Join Date: Nov 2007
Location: Pittsburgh, PA
Posts: 4,454
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depends on what youre plans for setup is.
__________________
I boost not because I have to but, because its who I am
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11-13-2009, 10:06 PM
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sprayin the whole 1320
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Join Date: Sep 2008
Location: Dirty South Jersey
Posts: 525
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motor swap. when you get tired or need more power from the 402 then put some spray on it. Thing will be fast with the right suspension setup
__________________
2005 GMC RST
6.0 MS4, Ported + Polished 243's,rod bolts, 160 t-stat,
Longtubes, Spintech, 6 speed, ported intake, 4.88's
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11-14-2009, 08:20 AM
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Junior Member
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Join Date: Nov 2009
Posts: 2
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gas mileage isnt an issue. i would drop an 8.1L in if there wasnt so much extra crap i would have to swap. i have a motorcycle and a new excalade i can drive instead of this thing if gas prices go up again.
who else besides sts makes a turbo kit. i found one other but they dont have the carb oe numbers. so every time i have to smog the truck i would have to take it off. |
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11-14-2009, 10:34 AM
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Senior Member
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Join Date: Aug 2007
Location: wichita, ks
Posts: 188
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motor swap. that way if you decide spray or boost later the engine can handle it safely.
__________________
(SOLD)2000 ECSB HARLEY DAVIDSON EDITION. 2''/4" DROP, 20" BUDNIKS, COWL HOOD, MOLDED ROLLPAN, CLEARS, DROP IN K&N, MIT, TAYLOR WIRES, LOUDMASTER EXHAUST
1991 RCSB S10 355 SBC, 700R4, 8.5" 10-BOLT, 18"/19" Z06 WHEELS, 4"/5" DROP, MAGNAFLOW DUALS W/X-PIPE, FULLY SHAVED W/ CADDY LIGHTS
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11-14-2009, 12:34 PM
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Senior Member
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Join Date: Apr 2005
Location: Wheatland, WY
Posts: 303
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I do, Nelson does, and Trick, but none of them have CARB approval. Only one is STS and its only on 01-05 I believe. AS far as what's better, depends on what you want to do with the truck. A 5.3 with about 7 psi of boost will make about the same power as a 408, but then you can turbo up the boost and make more power then a NA 408 if you want! 
__________________
01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC
12.21 @ 110.5 at 4800' elv. (6800 DA)
KB Racing S480 Turbocharged!
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11-14-2009, 04:32 PM
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Junior Member
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Join Date: Nov 2009
Location: patuxent river, maryland
Posts: 28
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i like my turbo 5.3l it makes my pig move pretty good. then again i do care somewhat what my mileage is. but down time on the install was way less than a motor build also.
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'04 Tahoe AWD,5.3L trickperformance turbo kit, magnaflow muffler and SC3200. 12.89 
Linear Mode
