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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 03-15-2011, 03:36 AM
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Default Reworking the Throttle body butterfly for HP gains????

Maybe a question for Ramtech?? I work with a guy who knows a guy...... who is a dodge mechanic! He says he can do some work to the butterfly in the TB to see big gains in HP and MPG?? Does this sound achievable or is someone blowing smoke??
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Old 03-15-2011, 04:11 AM
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You would not see big gains. Typically, the only time TB modifications will do much will be if you have an aftermarket intake manifold accompanied with aftermarket heads/cam as well. Aside from that, you wouldn't feel much difference!

If the guy is reputable, I guess you could let him work with it if you plan on modding heavily down the road. I'm assuming he will be boring it out a bit. It's a meticulous process and if it's bored too much you'll be losing power rather than gaining. The stock TB is typically the best it will get for the stock setup.
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Old 03-15-2011, 07:51 AM
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I think he's blowing smoke. I don't see how you'd get big gains by modifying just the butterfly. To get a gain, you need to flow more air which would require opening up the TB itself, not the butterfly. I could, however, see potential for high idle problems if it were done wrong.
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Old 03-15-2011, 08:20 AM
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maybe he'll put a nitrous nozzle in there?
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Old 03-15-2011, 10:24 AM
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it may show slight gains..my tb is ported and the blade knife-edged...to really take advantage you want a good cai/exhaust and maybe a cam/head setup down the road... is it gonna cost you? wiegh that vs the benefit...when ported tb's first came out they were around $400. They have since come down quite a bit nowadays..
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