Message: Its always a gamble boosting on a stock bottom end at any pressure. But to answer your qustion I have seen guys running 9lbs on stock short block without damage. Keep in mind that any pinging at all will surly kill your motor.
Powerdyne 6#, MP Headers, Transgo shit kit, MSD/BTM ignition, MAP tweak, relocated IAT, MP PCM, "409" taylor plug wires, Keith Black Pistons, 5140 I-beam rods, polished head bowls. MONEY PIT!!
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