Building a 440" Packard V8
Posted by Jack Vines On 2017/2/9 17:13:54
Kids, don't try this at home! It's taken many years and many dollars, but it's getting closer.
First up is finding a forged crankshaft. As most of you know, these were most likely never installed in production engines, but only available a service items after production ceased, so quite rare. Then finding an old school shop which will still build welded strokers; also quite rare. It took him three years to git 'er done, but here's a 3.875" stroke crank.
The shop owner, who's been grinding for forty years, says the Packard forged crank counterweights aren't right. He welded on large additions to the second and fourth counterweights.
And removed material from the ends of the throws to help balance.
Custom 4.25" bore forged pistons compared to OEM 374" piston.
And custom 7.100" rods with BBC ends.
And an aluminum flywheel with steel insert.
Now the hard work, as the crank, rod and a piston has to be dropped in the block, rotated, marked where clearance is needed and the bottom of the cylinders ground until they all clear when things are spinning.
Jack Vines
First up is finding a forged crankshaft. As most of you know, these were most likely never installed in production engines, but only available a service items after production ceased, so quite rare. Then finding an old school shop which will still build welded strokers; also quite rare. It took him three years to git 'er done, but here's a 3.875" stroke crank.
The shop owner, who's been grinding for forty years, says the Packard forged crank counterweights aren't right. He welded on large additions to the second and fourth counterweights.
And removed material from the ends of the throws to help balance.
Custom 4.25" bore forged pistons compared to OEM 374" piston.
And custom 7.100" rods with BBC ends.
And an aluminum flywheel with steel insert.
Now the hard work, as the crank, rod and a piston has to be dropped in the block, rotated, marked where clearance is needed and the bottom of the cylinders ground until they all clear when things are spinning.
Jack Vines
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