Ported Plenum
11-16-2002, 03:49 PM
#1
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Car: Camaro
Ported Plenum
I have finished porting my plenum but I haven't gotten a chance to run it yet, I was wondering what kind of gain I could see! It was done professionally and it looks exactly like every restriction has been removed or dremeled down to a smooth airfoil (near the runners). I've done all the other free mods so I am wondering what kind of gains I could expect to see with all this done. I pulled a 14.6 with the stock plenum and thermostat, bypass and MAF mod.
11-17-2002, 12:36 AM
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Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
I think you'll see more than that. Can't lay down a good estimate, but I'd say more than one tenth, less than two.
11-17-2002, 03:56 AM
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Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
definitly a performance gain, i know on my car the 5000 rpm barrier was gone once it was ported, it pulls right to 5500 now
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