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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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  #61  
Old 04-10-2013, 11:37 PM
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Originally Posted by bgramling View Post
ok, so after reading this im still clueless on what throttle body to buy. i have a 2012 Single cab 5.7L and i have a CAI so far but my next thing is throttle body and bbk shorty headers. what size throttle body should i run??
You want to look for a ported throttle body with an 87mm initial opening if you are planning headers.
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  #62  
Old 04-10-2013, 11:59 PM
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Originally Posted by CdnoilRAM View Post
You need to separate boosted and naturally aspirated. Boosted will still function just fine with a stock throttle body. You need to start looking at larger throttle bodies when you start moving larger volumes of air. The throttle bodies that dap and moe's sell are ported with stock butterflies, so all you are doing is creating a smoother transition of the air to increase velocity, not flowing more volume. I would look at going to an 87mm with headers and full bolt ons because you want to flow as much air at higher velocity to clear the combustion chamber as quickly as possible.

Anything beyond bolt ons on a naturally aspirated motor should have a larger true bore throttle body, and any good engine builder will tell you that.
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  #63  
Old 04-11-2013, 06:14 AM
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I just posted what I was told by the company that makes them. To be honest, your theory sounds correct but who am I to go against the designer and retailer?

Perhaps this is why it's so confusing as not everyone is on the same page.
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  #64  
Old 04-11-2013, 03:54 PM
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Do you know what the good thing about turning forty this year is? I finally have the ability to admit when I'm wrong!

Ignore my post about the 85mm being for all N/A bolt ons, it's not. You guys were all correct when you said that as soon as you add headers, the 87mm is required. There was a mixup in communication between Matt at Moe's and myself. He's now sending me a new 87mm and he agreed that I had the wrong TB.
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  #65  
Old 04-11-2013, 09:35 PM
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Anyone who needs a ported throttle body let either myself or Andrew know we will get you some killer pricing! and only the best quality, we use factory Mopar cores port them to 85mm or 87mm taper them to the original butterfly, and we do this on both sides of the throttle body.

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  #66  
Old 04-12-2013, 05:25 PM
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So after reading this I think im going to be getting an 87mm TB since I'll be installing my LT headers next week. Is this correct? I'm still a little confused...
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  #67  
Old 04-12-2013, 05:45 PM
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So after reading this I think im going to be getting an 87mm TB since I'll be installing my LT headers next week. Is this correct? I'm still a little confused...
Yes sir. This is what you want. You want full benefit f the increased airflow and getting it out quickly.
Let us know and we could provide you an 87mm
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  #68  
Old 04-16-2013, 08:39 AM
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I just installed my 87mm on friday, I have noticed some seat of the pants power. It took a couple key cycles to really start to feel it, now it seems to have a more effortless feeling under part throttle acceleration. I haven't really had a chance to go WOT yet, and I haven't made it to the track with it either. I do think once my tune is dialed in, it will produce even more gains. Throttle responce is better and my slight off idle stumble is almost gone, so it was worth it just for that reason, the extra power is a bonus at this point.
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  #69  
Old 04-16-2013, 01:27 PM
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Originally Posted by compressor man View Post
I just installed my 87mm on friday, I have noticed some seat of the pants power. It took a couple key cycles to really start to feel it, now it seems to have a more effortless feeling under part throttle acceleration. I haven't really had a chance to go WOT yet, and I haven't made it to the track with it either. I do think once my tune is dialed in, it will produce even more gains. Throttle responce is better and my slight off idle stumble is almost gone, so it was worth it just for that reason, the extra power is a bonus at this point.
This is exactly what you should feel and what everyone else will feel.
Its a good butt dyno and it does take a few runs to get the full feel of its potential
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  #70  
Old 04-19-2013, 02:00 PM
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I have an 07 hemi ram that has a cai,electric fan, lt headers ,no cats , flowmaster dual exhaust, and a superchips programmer( thinking of selling and getting a different one) and a couple other bolt on's. I'm very interested in getting a ported tb and from what i.ve read I would need a 87mm with the mods I have. My only concern is my fuel milege. How would the TB affect the milege?
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