Larger throttle body vs porting and polishing? - Dodge Challenger Forum: Challenger & SRT8 Forums
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Performance Modifications Want to talk about performance modifications for your Dodge Challenger? This is the forum for that. Anything from exhaust systems to power adders and everything in between. (Dodge Challenger Performance Modifications)

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Old 07-05-2010, 03:47 PM
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Larger throttle body vs porting and polishing?

How much difference would it make getting a larger throttle body(85 or 90mm), vs just porting and polishing the stock throttle body? I found 85 and 90mm throttle bodies for sale on a site at $500(same price on both). Thats $500, or I think there's a guy here in the Dallas/Ft. Worth area who will port and polish mine for under $100. Anyone know said guy btw? Lost his contact info.

And if I do go larger, 85, 87 or 90mm, which would be best(considering I won't be doing more than a CAI and catback exhaust)? BMC Performance - Challenger, Charger, Magnum, 300 parts!
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Old 07-05-2010, 04:53 PM
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Isn't there a size limit on the RT if you're using the stock manifold? I thought if you wanted to go 90mm or bigger you had to switch to a SRT manifold?
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Old 07-05-2010, 05:23 PM
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Not sure about TX but I know a guy in MN

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Old 07-12-2010, 03:11 PM
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No one has any more input into this? I quiet curious too. Ported Throttle Body or Bigger Throttle Body?
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Old 07-12-2010, 03:30 PM
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I ported my own. Took me 3 hours from start to finish.
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Old 07-12-2010, 03:34 PM
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Unless you're going to be adding headers and hi-flow cats, the larger throttle body really isn't going to help much. Rule of thumb: Larger in, larger out. 85mm is about the largest you can go with a stock tune.

If the goal was to get more power, I think your money should go down a different path.
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Old 07-12-2010, 05:03 PM
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Isn't the question here still, whats better a Bigger or Ported throttle body?
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Old 07-12-2010, 05:12 PM
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Well I already have a CAI, Corsa catback is one of the next things. Not sure about headers though.
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Old 07-12-2010, 05:46 PM
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So I have a stock 6.1 intake. Are you all saying I can see a boost usit it with a 90 mm throttle body. I have ARH headers and hi flow cats and a borla catback. Also a homemade real cai and a 180 tstat.

Am I a 90 mm candidate?
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Old 07-12-2010, 06:10 PM
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The guys' name in Lewisville is Brian Sailor.

He's done hundreds of these including mine. Absolutely beautiful work and about $100 if you're associated with the DFW LX crew.

It's worth $100 but certainly not $500. I can barely tell the difference but the throttle response is better. Looks a heck of a lot better than stock but you won't see that part unless you take it apart or remove your CAI. Takes about 90 minutes and he'll do it while you wait. Very cool and he's a great guy.

You can PM me for his contact info.

The answer to "ported" or "bigger" is: ported will give you a bit on a relatively stock or mildly modded engine (exhaust, Predator). A bigger TB will be necessary as you get into big money power adders. At about that point you'll want to be working with the full time pro's like Andy at PWR. Hope that answers it definitively for you.
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Last edited by internetguy; 07-12-2010 at 06:12 PM.
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