Re: Nother question about the stock V8 Magnum intake
[Re: StrokerPost]
#2419540
12/16/17 05:57 PM
12/16/17 05:57 PM
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Joined: Jan 2005
Posts: 12,408 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,408
Kalispell Mt.
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Lopping off runner length translates pretty directly into a increase in HP and decrease in TQ on these things.
Another thing that was common was to box off some of the plenum area to increase throttle response but I never thought throttle response was lacking on a properly running magnum. It will not give more TQ even though it will feel like it did. It can reduce HP as the throttle body shifts more towards flowing in pulses instead of having that nice big plenum to buffer the pulses and allow the TB to flow steadily.
I think you would be far better served trying to deal with the heat being transfered to the air. Even when its 20* below zero by the time the air is going through the port it is easily over 100* and on hot days it gets a lot closer to the coolant temp. I would love to try ceramic coating the plate and manifold. Also removing the entire factory thermostat, threading some pipe fittings in to the manifold flange and running a remote mounted thermostat, there is a ton of heat conducted to the intake air through that hot coolant running just on the opposite side of the plenum. Also tons of hot oil splashing off the cam and lifters is splattering all over the steel pan on the bottom exasperating the issue from that side also.
I have personally seen just a little benifit in IAT from removing all the webbing in the AC/ALT bracket as well as spacing a second steel pan about 1/2 inch lower than the factory one useing some of the valve cover bolts with the extra stud sticking up.
The only way the eddy air gap is even remotley close in TQ is because it solves some of the heat soak issues not because of superior flow.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Nother question about the stock V8 Magnum intake
[Re: StrokerPost]
#2419586
12/16/17 08:00 PM
12/16/17 08:00 PM
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Joined: Jan 2005
Posts: 12,408 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,408
Kalispell Mt.
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I think a 360 with a flat top would be perfect for the chamber size if not for NOX concerns.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Nother question about the stock V8 Magnum intake
[Re: JAMESDART]
#2420742
12/19/17 01:14 AM
12/19/17 01:14 AM
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Joined: Sep 2003
Posts: 6,847 Missouri
StrokerPost
OP
master
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OP
master
Joined: Sep 2003
Posts: 6,847
Missouri
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I put a 5.9 in my jeep and I can't stand that intake. The plenum plate deal sucks, it looks stupid, seems like it takes up a bunch of room. Maybe it's all in my head. I think I'd be more into the magnum swaps if you could still buy the efi m1, or something like it to get rid of the keg and plenum plate. This might be the intake for you then, especially if you've made other mods to your engine.
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