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Old 02-05-2018, 05:31 PM   #39
OLD GUY
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Join Date: Sep 2002
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Default Re: 1966 Ply Belvedere

Quote:
Originally Posted by Grey Ghost View Post
Is that specific intake manifold required or can the "street" version be legally substituted?
The 2780543 and 2780544 are one and the same Street Hemi intake. For some unknown reason Chrysler saw fit to have 2 casting numbers on the Street Hemi intake. As far as I know all Street Hemi intakes have those two casting numbers on them. So to answer your question the 2780544 casting number is just one of the two casting numbers and not a separate number for a different design manifold.
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