Jack Vines wrote Quote:
However, I've found the cost of modifying the 402" GM pistons and custom rods to fit the Packard V8 exceeds the cost of custom forged pistons which fit with no hassles.
<p>The mods to the 402 pistons is cutting off the small (0.200in) dome and adding another valve relief. There are no mods to the con rods which are "off the shelf" (see the manufacturer and P/N cited).</p>
Quote:
using the GM rods will require grinding the crankshaft to a smaller diameter.
<p>Correct, from 2.250 to 2.200 (0.050) on the rod journals. No difference on the mains, of course. Off the shelf BBC rod bearings will then fit. Pontiac and other racers do this all the time.</p>
<p>The whole assembly must be rebalanced, but one would do this anyway for a "high performance" build.</p>
<p>I'm not defending this setup per se. I am only putting forth an alternative for someone who wants better than stock pistons and rods at what appears to be a reasonable price, even considering the machine work.</p>
<p>Craig</p>
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