Re: 352 Crankshaft

Posted by John Wallis On 2012/2/26 14:30:02
Quote:

Jack Vines wrote:
Quote:
Were PRODUCTION built golden hawk 56J's with Packard V8 all have forged cranks????
Other than a better bottom plate for the oil pump without the vacuum pump, the '56J was in every respect a standard 1956 275hp 352" with a cast steel crank.

To date, I've never seen a production engine which could be verified as having been built with a forged crankshaft. Until we get something different in print from the factory, the 1959 date for introduction of the forged crank as a service part is still the one I believe.

jack vines



I would agree with Jack. I have a late production 374 Service Long Block/Crate Motor with a cast crankshaft and a bellhousing casting date of 7/26/56 that was in a 1956 GH (obviously a replacement motor). The production date would indicate it was manufactured after the 56J and 56 Packard Seniors were out of production and SP had moved on to the 1957 model year cars.

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