430+hp 340 possibilities

You can do it . My build : .030 over 340 , Speed Pro forged 9.0 to 1 for pump gas , stock forged crank, stock rods , 915 J heads, 2.020/1.600 , ported to 260 CFM , Mopar Performance 284 / .528 Mechanical camshaft , 1.6 HS rockers , Holley Strip Dominator, Holly Carb 4779 750 mechanical secondaries , Hooker Super Competition headers ,1 3/4 tubes . 441 HP . Yes, you can do it .