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Re: EQ or magnum heads with Manifolds
[Re: Supercuda]
#1283008
08/10/12 04:18 PM
08/10/12 04:18 PM
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Joined: Jan 2003
Posts: 7,978 Bethel Ct
AdamR
OP
master
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OP
master
Joined: Jan 2003
Posts: 7,978
Bethel Ct
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Im looking to run either my stock 73 318 manifolds (for now) or swap to a set of 71-73 340 manifolds. Im trying to keep the car stock looking. Obviously magnum truck manifolds fit.
Last edited by AdamR; 08/10/12 05:09 PM.
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Re: EQ or magnum heads with Manifolds
[Re: AdamR]
#1283009
08/10/12 05:27 PM
08/10/12 05:27 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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Well, I have test fit magnum exhaust manifolds on my 65 273 and my 87 318, had to grind the head a bit on the 87 where the rear most air injection port is and needed to plug the air injection ports, but they fit. I'd venture to say they'd fit the other way as long as you do not have exhaust manifolds with air injection ports. since those will not be covered.
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: EQ or magnum heads with Manifolds
[Re: Supercuda]
#1283010
08/10/12 07:33 PM
08/10/12 07:33 PM
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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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I've been running early 340 manifolds on stock magnum heads for a few thousand miles with no problems. The top and both sides of the LA ports are almost the same as the Magnum. Biggest difference is the port floor is raised significantly on the Magnum. When you mate the 2 together, you will see there is only about 1/8" of common sealing area at the floor of the port. This can lead to leaks at the bottom of the ports. If you have any trouble you can use Remflex exhaust gaskets, they will seal between the 2.
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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