Exhaust TECH Mufflers, Headers and Pipes Issues

          
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Old 10-28-2018, 11:47 AM
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Jon Salem Jon Salem is offline
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Default What manifolds fit what motors?

Does any one know what year range of exhaust manifolds will fit a 1971 400 motor? Will 350 manifolds fit a 400? Thanks.

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Old 10-28-2018, 12:35 PM
tom s tom s is offline
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its not the manifolds to the engine except for D ports a O ports but what chaasis they fit.Some manifolds will fit first gen and 61-64 big cars but wont fit 2nd gen a A body cars.Establish the chassis first.Tom

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Old 11-07-2018, 08:21 PM
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Jon Salem Jon Salem is offline
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It is an A body (71 Lemans sport convertible). The current driver side manifold is a 4-bolt, while the other is an older (69?) six bolt.. I would like to get a six bolt for the driver side. I'm not sure what year they shifted from six bolt to 4 bolt.

The six bolt manifold on the passenger side of may 1917 400 Lemans is code is 480142. Any idea what year/vehicle that correspond to? Thanks.

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Last edited by Jon Salem; 11-07-2018 at 09:21 PM.
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Old 11-08-2018, 12:57 AM
Goatracer1 Goatracer1 is offline
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If it is a six bolt, rear exit, 2 bolt pipe flange from 1964 through 1971 it will fit. I may be wrong but i think it was 1972 that has 4 bolts.

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