Thread: 434 sbc

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Back to the soup bowl pistons and quench. A friend bought a 434 sbc at an excellent price. Almost what the sportsman block would cost let alone the 230 Iron Ealge heads on it. The motor is 12.8:1 CR and he wants to get the CR to about 8.5-9.0:1 and set-up with a 177 blower. I got a 420 with 9.0:1 reverse dome with the 177. No one can make the pistons with low enough CR in reverse dome or inverted or D-shape etc., only dished. The engine now is a 427 and he is boring and setting it up for street use on pump gas. 4.0 stroke, 6" rods, Dart block, Dart heads, and all studded. I don't see any way quench would help out in this application. He will run 4-6 lbs boost. Any suggestions?? I have been dealing with piston man. daily and dished is all they willing to do. Not enough compression height for a inverted dome. Has to be a negative 38-46cc recession.