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400hp on 5.3?

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Old 05-22-2010, 04:23 PM
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it all depends on how the motor was taken care of , regular oil changes matience ect , .. theres quite a few guys on here with 120k+ miles and have full boltons and cam and run just as good as anything
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Old 05-23-2010, 05:04 PM
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Originally Posted by La_Beast
well i have my 5.3 engine with the xr275hr cam, 3000 stall, SHORTY HEADERS, underdrive pulley, cold air intake, helix spacer, light wieght driveshaft, original tranny, g80 with 342 gears and a custom tune from down south texas, and i am making 456rwhp and my torque was 479... i think it pertty dam good for a 5.3....... i have a couple more mods that i will be adding...
I've been telling you guys this for too long now, long tubes give up about 110rwhp to SHORTY HEADERS
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Old 05-23-2010, 07:26 PM
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What kind of power can be expected from a tr220 cam, lt headers, ory, cai, and 3000 stall?
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Old 05-23-2010, 11:00 PM
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What year model? 99-06 I'm gunna say about 320-330 RWHP through that converter, and about 400 to 410 at the crank...
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Old 05-23-2010, 11:36 PM
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I have a tr 220 and its a great cam in a 5.3 I think.. Most tr220 setups make like 325-340 at the rear wheels...
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Old 05-24-2010, 09:49 AM
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Would it be good to get the whole cam kit with the tr220?
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Old 05-24-2010, 11:50 AM
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you will need some good springs and pushrods... im runnign pac 1218s and comp 7.4s
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Old 05-24-2010, 11:56 AM
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Sounds like a lot of you guys are being way too optimistic...


My 5.3 has 400 hp at the crank with a K&N drop in and a flowmaster it's got that vortec motor dontchaknow?
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Old 05-25-2010, 09:47 PM
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https://www.performancetrucks.net/fo....3+tr220+stall

Easy to find with a little search-a-rooskie in the "DYNO" section.
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Old 05-09-2014, 05:23 PM
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Couple questions...

I have a 2006 5.3 with 128k miles on it.

I'm soon going to be putting a lunati cam into my truck (Voodoo Hydraulic Roller Cam - GM LS GEN III/IV 267/273 - Lunati Power) it has .549 lift on intake and exhaust, and since I have to upgrade my valve springs as well, I'm going ahead and putting new lifters in as well.

all of this with a tune what should I be getting for rear wheel power?

It's 2wd by the way.
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