Do I have to port manifold right away for 58 tb?
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Registered User
Joined: May 2003
Posts: 724
From: Regina,Sask,Canada
Do I have to port manifold right away for 58 tb?
I plan on porting my intake manifold when I do heads/cam and headers next year but was wondering can I bolt on a 58 tb right now or will the blades not open properly with the 52 size hole stock in the intake?
Registered User
Joined: Oct 2003
Posts: 340
From: Iowa Falls, Ia
Re: Do I have to port manifold right away for 58 tb?
Yea you need to port the opening....or get a spacer. I remember seeing a spacer so you dont need to port your manifold, but do it right...PORT IT!!!!
Registered User
Joined: Jun 2002
Posts: 214
From: DFW
Re: Do I have to port manifold right away for 58 tb?
You need to port the manifold so the ariflow won't be restricted. I don't think it'll hit the maniflods 52mm openings. I need to port my manifold also. I installed a 58mm tb a little over two years ago without porting and I haven't had any problem to support the throttle blades striking the manifold at WOT. It doesn't dyno as much N/A though as when I had the 52mm on the car though.
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