The previous owner had rebuilt the motor & has done some changes to it.
He put in Silv-O-Lite pistons that look to be 10.2 compression.
Also Comp Cams Extreme Energy Cam & Lifter kit # CL20-223-3 (Advertise duration 268 int / 280 exh Lift with factory rocker ratio = 0.477 int / 0.480 exh) He called it a lumpy cam.
Also Speedmaster aluminum heads part # PCE281.2146 w/ 2.02" Intake / 1.620" Exhaust
It has a Holley model 4160 600cfm square bore carb on an adapter plate on the stock...
73 Challenger 340 AT doesn't seem to have the power I think it should
