Porting the plenum pics wanted....
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,182
Likes: 0
From: Concord NC
Porting the plenum pics wanted....
Well, the transmission on my truck needing a rebuild has put off the super ram, so I figure for now I'd do something that's free to tide me over. Anyone take pics along the way of porting the plenum (and possibly manifold, but don't know that I want to take that off right now).
Thanks
Joe
Thanks
Joe
Race Director
Joined: May 2000
Posts: 17,101
Likes: 4
From: No more yankee my wankee, the Donger is tired!
Re: Porting the plenum pics wanted.... (SlowJoe)
Jim Milstead is doing the work for me. With the shape of the ports, there is only so much you can get at. You can remove the underside of the plenum and do a complete job and re-weld as it will be unseen. But the advantages are basically only seen on a 415 car.
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: Porting the plenum pics wanted.... (SlowJoe)
Very nice pics.
With my recent testing, there is no gain with porting a plenum on a stock Heads/Cam car.
I ported the plenum and installed a Accel base with no gains. I have plenty of track data to reley on.
Vic
With my recent testing, there is no gain with porting a plenum on a stock Heads/Cam car.
I ported the plenum and installed a Accel base with no gains. I have plenty of track data to reley on.
Vic
Instructor
Joined: Jan 2002
Posts: 153
Likes: 0
From: Essex Ont
Re: Porting the plenum pics wanted.... (Vic'89)
I'll agree with that. I was kind of disappointed when I put the Accel lower/AS&M runners and ported plenum on and didn't gain anything. I'm sure it will pay off with heads and cam swap.
Bob
Bob
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,182
Likes: 0
From: Concord NC
Re: Porting the plenum pics wanted.... (Vic'89)
With my recent testing, there is no gain with porting a plenum on a stock Heads/Cam car.
I ported the plenum and installed a Accel base with no gains. I have plenty of track data to reley on.
Vic
I ported the plenum and installed a Accel base with no gains. I have plenty of track data to reley on.
Vic
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Joined: Aug 1999
Posts: 517
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From: Fort Myers FL
Re: Porting the plenum pics wanted.... (SlowJoe)
The main gain is in porting the intake manifold. Two runner feed air into one piston instead of one runner feeding air. The URL isn't working but the dyno showed a 40 HP gain by doing this. I am doing it now and will post pics on my web site when it is done.
(Physics) "Twice the air intake is a good thing" Al Einstien
I used a quarter to draw the radius where I cut out the aluminium.
Steve
(Physics) "Twice the air intake is a good thing" Al Einstien
I used a quarter to draw the radius where I cut out the aluminium.
Steve
