My Demon has a 1973 360 block with no fill, w/ Program 2-Bolt Center 3 main caps and a 4.100 Crankshaft, 13 to 1 CR, Nicely ported production heads and a fairly mild solid flat tappet cam [Racer Brown STX22]. The car weighs almost 3100lbs and has been 1.260 60ft, 6.09 1/8th at 111mph and 9.68 at 136mph 1/4 mile.

Car has a crank trigger and timing set at 28*. This engine has 1800+ passes and counting. Crank has not been out of block nor have heads been un-bolted from the block since they were torqued on in winter of 2006. Rod bearings and valve springs have been changed twice. Rod bearings only changed when replacing the $800 Stefs aluminum oil pans, [two of them], after smashing them up on unexpected huge wheelies.

I say build what you have and don't kill it with too much timing.