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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 08-21-2011, 03:42 PM
Red05Ram Red05Ram is offline
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Default 85mm vs 90mm Throttle Body Upgrade

I wanted to upgrade my throttle body, but I see on Moes website it says that tuning may be required... I think at some point I remember seeing that a 90 wouldnt have really an advantage unless you change your intake manifold, but if thats the case why does the 85mm say you can just use it and the 90 say tuning required? Which would yall recommend? Also, anyone get the 85mm that moes makes themselves? Thanks!!
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Old 08-21-2011, 04:25 PM
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the 90mm is overkill unless you have plans for forced induction.
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Old 08-21-2011, 05:16 PM
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Got this puppy of Dans Fastman Website

HEMI TB SIZING RECOMMENDS:
My Standard Modified Hemi TB is an impressive improvement over the factory Hemi TB. It is absolutley perfect for most applications. This TB covers everything from bone stock through the typical bolton additions like aftermarket Air Intakes, Exhausts, and Programmers. My Standard Modded Hemi TB is an excellent value and will improve your performance nicely.

I do offer the bigger 84mm Hemi TB. It is meant for built motors of the next level which require more cfm than my Standard Modded Hemi TB can deliver. This means Ported Heads, Cams, Stroker Motors, and Boosted Applications.

While the "Bigger is Better Theory" is always an evil temptation proper TB sizing does not work this way. All you need to do is match your motors air requirements. Going bigger than necessary is not going to give you anything extra. Follow my recommends and get a good result.
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Old 08-21-2011, 08:02 PM
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Quote:
Originally Posted by Bordin View Post
Got this puppy of Dans Fastman Website

HEMI TB SIZING RECOMMENDS:
My Standard Modified Hemi TB is an impressive improvement over the factory Hemi TB. It is absolutley perfect for most applications. This TB covers everything from bone stock through the typical bolton additions like aftermarket Air Intakes, Exhausts, and Programmers. My Standard Modded Hemi TB is an excellent value and will improve your performance nicely.

I do offer the bigger 84mm Hemi TB. It is meant for built motors of the next level which require more cfm than my Standard Modded Hemi TB can deliver. This means Ported Heads, Cams, Stroker Motors, and Boosted Applications.

While the "Bigger is Better Theory" is always an evil temptation proper TB sizing does not work this way. All you need to do is match your motors air requirements. Going bigger than necessary is not going to give you anything extra. Follow my recommends and get a good result.
Exactly like ^^


If you put too big of a throttle body on it can reduce intake speed and hurt your performance. When you dont have a need for all the air it slows up in the intake manifold and isnt pulled in as well as it could be.

If you arent heavy into the mods, you dont need a giant TB
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