Here is Ron's post from 2008 describing his GMC 302 build......Also, Hudson rods, not Packard!
Beater,
321" GMC (+0.125")Block is filled with HardBloc to water outlet.
308 Hudson rod (8.115" C-C)
0.880" Pontiac pins, 84 grams lighter than GMC.
JE 11.5:1 piston (400 grams lighter than GMC)
Stock main brgs.
CR90P rod brgs ( 1940-1950"s Chrysler)
2.02/1.60 SB Chevy valves
#983 cylinder head, ported. 264 cfm @ 0.600" lift
Dema Elgin did the cam based on everything else in the engine.
I wouldn't consider anyone else grinding a cam for this engine. Pulls like a freight train above 3500 rpm.
Aluminum roller rockers we made. (1.85:1 ratio on a 1.00" shaft)
I saved 1.25 POUNDS per cylinder with the piston/pin/rod.
Bearings look good after 20 pulls on the dyno and 6 runs down the strip.
Smith Brothers Pushrods, Bend, Oregon. 5/16, 0.125" wall. Beautiful work and delivered on THE day promised.
