Re: [FWDLK] INTERCHANGEABLE HEADS AND INTAKE MANIFOLD

[Eastern Sierra Adjustment Svc <esierraadj@xxxxxxxxxxx>]

> 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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