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Exhaust man compatibility - LA 318 to 5.2 Magnum

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Old Dec 26, 2010 | 02:36 PM
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fin reaper
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Default Exhaust man compatibility - LA 318 to 5.2 Magnum

Will center dump '86 LA 318 exhaust manifolds bolt up to '96 magnum heads? Any potential loss in power if they do fit?
 
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Old Dec 26, 2010 | 03:03 PM
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Only one way to find out! The gaskets are the same, so there is a good chance.
 
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Old Dec 28, 2010 | 12:01 AM
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Originally Posted by fin reaper
Will center dump '86 LA 318 exhaust manifolds bolt up to '96 magnum heads? Any potential loss in power if they do fit?
The LA and Magnum motors share the same exhaust manifold bolt pattern so yes they will bolt to the motor. They will not work with the magnum motor mounts though as the LA manifold dumps right into the mount. Many LA exhaust manifolds have emission passages that may allow exhaust leaks.

The factory magnum exhaust manifolds are some of the best exhaust manifolds Dodge ever produced. The LA manifolds you have will reduce power and efficiency.

Originally Posted by grox
Only one way to find out! The gaskets are the same, so there is a good chance.
The gaskets are similar but not the same.
 
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Old Dec 28, 2010 | 11:03 AM
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Thanks. This is being swapped into a wrangler - so the motor mounts will be out of the way. I think I may just get the block huggers.
 
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