Shady Dell Speed Shop 440" Big Block Chrysler on the dyno. Factory 1970 Plymouth Superbird Engine, Comp EX274 Hydraulic Flat tappet camshaft, 906 factory iron heads, Competition valve job, 9.4;1 compression, Factory 1970 cast iron intake manifold & correct # matching AVS carb. 408 HP @ 4900 RPM 508 FT LBS Torque @ 3100 RPM
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