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Old 02-04-2011, 09:43 PM   #1
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Reasonable change to add power to a 5.3

We are towing with a Suburban 1500 with a factory tow package, 5.3 V8 in a 2003 model. It does OK, but if I go up in TT size I would need more power. Does anyone know of a reasonable change that can be made to improve the power output of the 5.3?

On my 2003 Jeep I added headers, exhaust system and a chip which gave it a definite power increase which has been fun and useful off road. Hope there is something similar for the 5.3 Chevy V8.
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Old 02-04-2011, 10:02 PM   #2
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Get a 2500 Suburban with the 6.0L gas motor. Anything you do to a chassis that is already near capacity will be a hugh waste of time and money.
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Old 02-05-2011, 08:28 AM   #3
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The mods you made on your Jeep will do very little to improve your towing capability while in the typical 2000-3000 rpm towing range. If you are talking about running at max. rpm, well then that's a different story. You need more engine displacement or a diesel to generate more torque. Been there, done that !!
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Old 02-05-2011, 07:10 PM   #4
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To answer your question, yes. Wait4Me Performance is one, Brazel's RV Centralia Washington would be my choice. Then of course Banks performance sells a "kit" for performance enhancement.
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Old 02-05-2011, 07:46 PM   #5
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I installed a new chip from Hypertec in my previous 87 and 95 1500 Chevy PUs, it did help but I was working with the 5.7 in both. Then I moved up to a 3500 dually with Duramax & Allison, won't go back and can't because of the 5er we're towing.
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Old 02-07-2011, 02:33 PM   #6
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Quote:
Originally Posted by RVandbike View Post
We are towing with a Suburban 1500 with a factory tow package, 5.3 V8 in a 2003 model. It does OK, but if I go up in TT size I would need more power. Does anyone know of a reasonable change that can be made to improve the power output of the 5.3?

On my 2003 Jeep I added headers, exhaust system and a chip which gave it a definite power increase which has been fun and useful off road. Hope there is something similar for the 5.3 Chevy V8.
If you want to increase HP, that is one thing. If you want to tow safely, then you need to consider the tire,springs and axle capacities and gear ratios to name a few. If you only increase HP, when you find out that wasn't enough, at that point you may only be able to hang on and pray.
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