CNC Spiral Ported TBs - Whose Got It???

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Oct 19, 2012 | 07:24 PM

oh1vette

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From: Youngsville North Carolina

CNC Spiral Ported TBs - Whose Got It???

Hey C6 brothers, I understand a lot of you guys have gone this route...

Seems like these have been offered about a year now and I want to get my TB ported and these appear to be very nicely done.

But, I haven't been able to find any real world reviews.

I understand porting mostly improves throttle response, but the original thread quotes gains of an avg 12-16 HP...

(http://forums.corvetteforum.com/c5-t...le-bodies.html)

So, anybody got one that wants to share their experience?

Last edited by oh1vette; Oct 19, 2012 at 07:27 PM.

Oct 19, 2012 | 08:36 PM

sevinn

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From: Baton Rouge LA

St. Jude Donor '14, '16

Had mine done in my 05. I don't think it added any HP, but there was an appreciable difference in part throttle response.

Oct 20, 2012 | 04:31 AM

brewcitygymratt

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From: Milwaukee WI

St. Jude Donor '13

I have had one for a couple months to go with my ported fast 102. Love the improved throttle response. I'm going to Dyno the car within the next couple weeks to see if there was any gain with the vmax ported tb & dual round tip mbrp axleback.

Oct 20, 2012 | 06:46 AM

SpinMonster

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From: Colorado Springs, CO

St. Jude Donor '08-'09-'10-'11

Quote:

Originally Posted by SEVINN

Had mine done in my 05. I don't think it added any HP, but there was an appreciable difference in part throttle response.

Thats about all any ported TB will give you and as far as putting a spin on the air, its pretty impossible since the throttle blade is at a right angle to the supposed spining air when its open. If there was no blade, it would work as advertised.

Oct 20, 2012 | 12:03 PM

FloydSummerOf68

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From: Missouri City Texas

I wouldn't count on any power, but the throttle response should be nice for 100 bucks, or whatever porting costs these days.

Oct 20, 2012 | 12:43 PM

litle88

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I really wouldn't call it "porting" the opening cause its still 90mm's but they are cncd and from what I can tell throttle response is way better for 100 bux.

Oct 20, 2012 | 02:06 PM

SUB VETTE

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From: San Diego CA

I installed a Vmax CNC ported TB on my ported Fast 102 as part of a package of other mods (Long Tubes Etc.). I don't know how much Hp the TB by itself picked up, but I do no that throttle response was much improved. The vendor for the TB suggested 3 to 5 Hp gain only.