Re: Did Chevy consider Packard V8 BB Design?

Posted by 55PackardGuy On 2009/3/7 23:37:06
And now, after those brief words from our sponsors... back to the show:

Quote:

Rusty O\'Toole wrote:
The Polysphere was more like a Hemi head than a wedge head. Chrysler brought out their first Hemi V8 for the New Yorker, Imperial and Saratoga in 1951 while keeping the flathead 6 for the Windsor. In 1954 they introduced a new V8 for the Windsor which they called a Polysphere V8..

The big block Chev featured what they called a "canted valve" head. It has the valves at an angle and a flattened out Hemi head like a Poly.

Only Chev brought out their engine just as Chrysler was dropping the Poly head, 1965 - 66.

Rusty,

Was that the Chevy "Porcupine Head" or "Semi-Hemi" I've seen references to?

And, since engine design is on topic here, who came up with that wondrous "egg-beater"-- the true Chrysler hemi? Quite an engineering marvel, although why they didn't just go ahead and use overhead cams, I'll never know. Pushrods were the hard way... but then I suppose they saw some efficiencies in having a multi-use block.

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