Re: [FWDLK] INTERCHANGEABLE HEADS AND INTAKE MANIFOLD
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Re: [FWDLK] INTERCHANGEABLE HEADS AND INTAKE MANIFOLD



That would be a pretty neat trick; fitting the 55-56 Dodge Hemi heads onto the
55-56 Ply Poly (non-Fury) heads.

One major problem might be that the Dodge heads, along with The Ply's
pistons' "negative stroke" (?, maybe, where the pistons' overall height places their tops at a plane below that of the block's deck surface).....would create a decreased compression ratio, due to the Hemi's combustion chamber's extra volume.

This is precisely what occurs when 57 Dodge Hemi heads are placed
onto a Dodge Poly engine block, as the Hemi pistons are taller, and require
valve reliefs to be located onto the piston-tops.

Of course, taller pistons' installation takes care of any initial c.r. decrease.

Neil Vedder






Bjwt56@xxxxxxx wrote:
Ron:

The 55-56 Dodge Hemi heads will fit only the 55-56 Dodge and Plymouth V8's according to my parts book. Part number is 1615886. Incidentally, 1615886 will not fit the 56 Fury according to the same book. The 56 Fury head part number is 1731609.

     John

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