63/64 Cadillac Website

exhaust manifolds

guys do exhaust manifolds from a 1964 Fleetwood 429 fit on a 390 from a 63 ?

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Comment by tim sparks on October 23, 2015 at 8:59am: thanks Jason your the best

Comment by Jason Edge on October 22, 2015 at 12:06pm: Left driver side is the same from 1961 to 1964 (all body styles) + 1965 (75 Series)
Right passenger side is different between 1963 and 1964.

The RH 1963 is a one year only manifold, while the RH 1964 manifold was also used on the 1965 75 series.

You can see the distinct differences between the RH 63 manifold (top picture) and RH 64 manifold (bottom picture) below:

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Posted by SK on June 2, 2025 at 2:20pm 2 Comments 0 Likes

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