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Re: Magnum headers fit LA?
[Re: roadrunninMark]
#1119685
11/23/11 12:05 PM
11/23/11 12:05 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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yes,they fit either head,LA heads have the air injection hole that needs pluged before headers go on.  now wether those shortys fit any other older body style is another story.
Last edited by scratchnfotraction; 11/23/11 12:08 PM.
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Re: Magnum headers fit LA?
[Re: roadrunninMark]
#1119687
11/23/11 04:59 PM
11/23/11 04:59 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Not all LA heads have air injection holes and there is a difference between the early and late LA heads.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: Magnum headers fit LA?
[Re: Supercuda]
#1119688
11/24/11 01:34 AM
11/24/11 01:34 AM
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Joined: Jul 2003
Posts: 6,167
Maryland
GO_Fish
master
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master
Joined: Jul 2003
Posts: 6,167
Maryland
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Quote:
Not all LA heads have air injection holes and there is a difference between the early and late LA heads.
And a difference between truck LA heads and car LA heads. IIRC, the trucks escaped the air injection heads for a few years after the cars got them (different emission requirements?). I have a set of 360 heads off a '74 van that have the boss for the air injection, but they are not drilled.
And when mixing LA and Magnum exhausts, make sure your mating surfaces are perfect, or you can easily have exhaust leaks at the bottom of the port(s). The floor of Mag ports was raised for better performance , and there is only about 1/8" common sealing area at the bottom of the port when compared against the LA design. If any doubt about your machined surfaces, go with Remflex exhaust manifold gaskets to make sure you have no leaks.
Last edited by GO_Fish; 11/24/11 01:40 AM.
Scott B.
"I'm a self-made man... I started with nothing, and I still have most of it!"
68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph
69 340 GTS stock 14.18@ 95.60 mph
01 5.9L Ram 1500 Quad Cab 4x4
01 3.5L 300M 16.23@ 86.97 mph
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