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Old 01-15-2013, 04:46 PM   #1
KO6GTO
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Arrow Porting my ls2 intake

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Last edited by KO6GTO; 08-25-2013 at 04:51 PM.
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Old 01-17-2013, 05:30 AM   #2
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double cut tapered carbide burrs would work a lot better.
your width should be about 1.045" all the way top to bottom to match the head opening, like you see there in the carbon/oil baked on deposits
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Old 01-17-2013, 07:42 AM   #3
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There is a long thread about this and I posted my home porting pictures there. My measurements agree with A_VAS.

http://www.ls1gto.com/forums/showpos...&postcount=116

http://www.ls1gto.com/forums/showpos...&postcount=119
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Old 01-17-2013, 08:11 AM   #4
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http://http://www.american-carbide.com/Burs/ABProducts.php

actually the cone radius angle burr at the bottom of this page, in double cut is the tits for porting this nylon 6 stuff, at least IMO
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Old 01-17-2013, 08:27 AM   #5
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Worth doing this to a stock 04 intake?
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Old 01-17-2013, 08:46 AM   #6
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Quote:
Originally Posted by A_VAS...View Post
http://http://www.american-carbide.com/Burs/ABProducts.php

actually the cone radius angle burr at the bottom of this page, in double cut is the tits for porting this nylon 6 stuff, at least IMO

What size cut diameter works best? Or should I get a few different sizes?
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Old 01-17-2013, 08:59 AM   #7
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NVM found out its not worth porting the stock LS6 intake
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Old 01-17-2013, 10:20 AM   #8
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First time? If so, I'd suggest doing the porting with small sanding drums instead of a carbide bit. The sanding drums can be had in different coarsenesses (and diameters) for rough cutting and smoothing. Sanding drums may take a little longer (not much really), but since you are working on plastic instead of metal this isn't a bad thing. With a carbide bit you can dig clean through the plastic a lot quicker than you think.

I ported my LS2 intake in 3-4 hours using sanding drums only and never made any gouge cuts I wanted to undo. You can see the results on my GTO website.
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Old 01-17-2013, 12:20 PM   #9
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you do need to use light pressure and go slow with the carbide for a first timer. But once you get the hang of it goes very quickly. I do finish blending with a 80 grit sanding roll to make the corners nice and round and smooth it all up.

1/2" diameter carbide burrs are a good size. I port 3-4 intakes a week so time = money is why I use carbide to remove material quickly.

The same type of burrs in single cut style work well on the aluminum throttle bodies. Or a CNC machine if you have one of them in your garage LOL
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Old 01-20-2013, 09:19 AM   #10
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Great advice guys! Going to be finishing it up today will update
Rinsed all the plastic crud out and set it in front of a fan for a couple hours
then installed it and went to get some gas
Seems to rev better but it is thirty degrees and i haven't driven the goat in forever

Last edited by KO6GTO; 01-20-2013 at 02:37 PM.
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