I was thinking going to port my plenum this week but I had some questions first. What do I grind out? Can i use an inline air grinder or do I have to buy some special porter? Do you have to buy special porting bits or can you use air grinder bits? What gaskets do I need to buy? How much more horespower will it give me? Does anyone have any pictures of what I need to grind out from when they did it? For the people who did it, did you notice a big difference when it was done? I know I asked alot of questions but any help would be greatly apreciated.

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88 iroc
LB9 305 tpi
k&n, flowmaster, ADS chip
160* thermostat
home made ram air
removed smog pump
TB bypass
ASCD big block hood

 

Try this page for info on porting the plenum. It should help you:
http://www.tribal-treasures.com/cars...-port/port.htm

 

...or check this link:

Plenum Porting.pdf

If you need any more photos or details, just add to the thread.

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Later,
Vader
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"I'm'a do Things My Way - It's My way or the Highway."
Adobe Acrobat Reader

 

thank you very much. Those links were perfect.

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88 iroc
LB9 305 tpi
k&n, flowmaster, ADS chip
160* thermostat
home made ram air
removed smog pump
TB bypass
ASCD big block hood