LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Intake manifold porting for tb

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Old 04-11-2009, 09:24 PM
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Default Intake manifold porting for tb

Okay I got a 58mm holly TB and we all know the stock is not that big. I have the intake off as I just got it powder coated red. Now, what is the easiest or most efficient way to open the tb holes on up? I have them marked so I know how much metal to take off. What about the extra metal at the bottom, If I go too deep there am I getting into something else? Is there any pics around that I have not found?
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Old 04-12-2009, 12:12 AM
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Just cut out the outline of the new 58mm gasket. You can use a Dremel, die grinder, sanding drum, etc., to open them up. Just make ABSOLUTELY sure you remove any and all metal shavings from the intake. There are dozens of places for shavings to hide, so be very careful and thorough.
Old 04-12-2009, 12:15 AM
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Originally Posted by RamAir95TA
Just cut out the outline of the new 58mm gasket. You can use a Dremel, die grinder, sanding drum, etc., to open them up. Just make ABSOLUTELY sure you remove any and all metal shavings from the intake. There are dozens of places for shavings to hide, so be very careful and thorough.

Perfectly worded.
Old 04-12-2009, 02:58 AM
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+1 on the dremel. after you are done take an air hose and blast it clean
Old 04-12-2009, 04:46 AM
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I have thought about taking it to someone to be cleaned afterwords as it has been media blasted before it was powdercoated and media just falls out as you move it around. What do I tell them I want done, I guess what I am aswking is if I take it to a machine shop what is the process of cleaning it well?



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