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Latest design in TB porting...

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Old 07-13-2008, 10:00 PM
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Old 07-14-2008, 10:14 AM
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The stock LS1 and LS6 blade is 75mm, you can bore most of them out to 78mm. A few I have seen doesnt have enough material in the casting to go 78mm. Ive never offered a 78mm and have never done one but Ive ported enough of em to see that one or two here and there wont go that big so you may have to supply/buy/swap another.
Old 07-14-2008, 10:37 AM
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And you are correct, they are 75mm....my error.
Old 07-14-2008, 10:45 AM
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I have a C5 TB housing and blade if you need another core. Its in great shape and is untouched.
Old 07-14-2008, 10:50 AM
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wow
Old 07-14-2008, 10:52 AM
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yummy that looks real nice!!
Old 07-14-2008, 11:11 AM
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so when exactly are these available?
Old 07-14-2008, 11:51 AM
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Thats one cool CNC program. What do you use to create files and programs
Old 07-14-2008, 11:53 AM
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Originally Posted by cals400ex
so when exactly are these available?
Now! Y or F body. Takes app 5 days turnaround. Send yours in first or the core is $50.

$15 S&H flat rate.
Old 07-14-2008, 01:11 PM
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are you guys doing the bump stop mods or any other changes? or is it just working the inside of the tb?
Old 07-14-2008, 01:29 PM
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Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
Old 07-14-2008, 01:33 PM
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what about the truck DBW, dont forget about us now....lol
Old 07-14-2008, 01:37 PM
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sweet is wish my blazer was out of the shop so i could be driveing it instead of my Z28 so you could do this ill get with you in a week
Old 07-14-2008, 01:38 PM
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Originally Posted by Bad Blue WS6
Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
there design with the swirls is helping force more air in and faster. and the fact its actually cnc'd!!!!!!!
Old 07-14-2008, 01:43 PM
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I would rather buy a stock hand-ported throttle body, performance is going to be the same.
Old 07-14-2008, 01:54 PM
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i wonder if hand finishing this to a mirror finish would help some more?
Old 07-14-2008, 02:10 PM
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Originally Posted by Bad Blue WS6
Is it me, or does that edge looks very crooked,,like one side got Pnp'ed nicly, and the other is still thick?,,like it wasnt machined evenly,,or it was done lopsided,, looks like half of the outer ridge remains...and whats different besides the lil swirly marks on the inside?,,im not getting the whole "latest design" thing,,,"latest method of porting" maybe...is that what is meant? Not trying to be a pain, i guess i just expected more than what it is..
The pattern is dense on the steeper side & less dense on the thicker, or off-set side. We do the snout as thin as can still hold the coupler/bellows.

As far as the other questions, I believe we are the only ones to do a CNC program for the stock TB's, and it was CAD designed so the flow volume & velocity is matched on all sides where a hand port gives the same finish on all sides & causes turbulance as the airflow enters the blade area due to the un-even bore.

We are working on the truck ones as well as LS2's, but this took over 6 months to perfect so it will be another 45 days or so. We did several different cuts & patterns that looked good on the computer, but this design produced the most through the entire RPM range. Oh, our engineer that designs alot of this stuff was with Edelbrock in the old days & has been doing R&D for GM for years....including the pre-production LS1 heads.
Old 07-14-2008, 02:32 PM
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awesome!!!
Old 07-14-2008, 02:46 PM
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There is another company that does CNC but its nothing like this.
Old 07-14-2008, 02:55 PM
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so in all honesty, what is a better TB....

A Bo White P&P TB

or

A CNC TB

I have a Bo White P&P TB, was wondering ig i could p/u up somre more ponies with a CNC'd one?


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