Plenum Porting Service
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Joined: Nov 2003
Posts: 266
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From: Mid Mo.
Car: 1989 GTA - Gunmetal grey
Engine: 5.7 ltr.
Transmission: 700R4
Axle/Gears: 3:27 9 Bolt Borg Warner
Plenum Porting Service
Looking for a plenum porting service to match my SLP siamese runners and 58mm throttle body.
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Joined: Oct 2005
Posts: 545
Likes: 23
From: IN
Car: 88, 89 & 91 GTA
Engine: 355 Super Ram/350
Transmission: TH-375/700R4
Axle/Gears: Currie Ford 9"/3.70
Re: Plenum Porting Service
Do it yourself, easy.
Watch the video on youtube, buy a die grinder and some carbide bits. He goes into detail how to do it.
I did the exact same thing you want to do last year with the same runners. I bought a cheap grinder, got the bits from the source mentioned in the youtube video and got to it. Easy mod, had 60$ in it total.
Watch the video on youtube, buy a die grinder and some carbide bits. He goes into detail how to do it.
I did the exact same thing you want to do last year with the same runners. I bought a cheap grinder, got the bits from the source mentioned in the youtube video and got to it. Easy mod, had 60$ in it total.
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