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Why does no one port TBs?

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Old Jul 4, 2005 | 11:28 PM
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Default Why does no one port TBs?
There is a local guy here who does porting but i have not seen anyone here who has ported theirs. can it be done?
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Old Jul 4, 2005 | 11:34 PM
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yes... I am sure alcee1 will chime in!!!
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Old Jul 4, 2005 | 11:38 PM
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I massaged mine a bit






Does it help? Who knows. Maybe with more mods it will pick up a little something.
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Old Jul 5, 2005 | 12:00 AM
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I have a stocker punched out to 52mm. It's done all the time.
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Old Jul 5, 2005 | 12:09 AM
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if you port it do you need to have the car tuned?
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Old Jul 5, 2005 | 12:20 AM
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From: Good health is merely the slowest possible rate at which one can die
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Originally Posted by CrazyInBlack
if you port it do you need to have the car tuned?
No. If that's all you do, it'll be fine. The concensus is around here, Dave Kuldos does a fine job of this for much less than an aftermarket one. Some of the aftermarket ones are troublesome anyway.
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Old Jul 5, 2005 | 02:10 AM
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David Koldos is the man for stock (48mm) to 52mm. Excellent work and great to deal with.

dkoldos@ameritech.net
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Old Jul 5, 2005 | 09:41 AM
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Originally Posted by CrazyInBlack
if you port it do you need to have the car tuned?
With my LT1 I did have to have the car tuned. As the last mod I made after heads/cam and headers the PCM could no longer manage the changes with stock tune.

I have a heads/cam upgrade and on a previous dyno session the tuner didn't change the A/F. After installing the 52mm TB the idle was erratic and cam surge at low revs was worse. A tune by Jeff Creech smoothed it out and gained about 10 HP for me.
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Old Jul 5, 2005 | 09:55 AM
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Theres a guy out in KS that does them. He hangs out on the CZ28.com board. he puts new bearings in them and all.

They require reprogramming definately if the car is a 94+ just to get the transmission back in line.. oR the best it can possibly be.
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Old Jul 5, 2005 | 10:21 AM
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i'll also offer another source, although i don't know how useful it would be. i bought my 52mm used, it was a stock unit bored out and bearings, etc. all replaced.......work was done by Arizona Speed & Marine.....however I don't know what they charge for the job.

http://www.azspeed-marine.com/
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