someotherguy
+1y
'79 454 is gonna be low compression smog era motor, not huge power, but should definitely wake up when you mash the loud pedal. Before writing it off do a compression check to be sure it's healthy at the core, then check your ignition timing (not sure what spec should be on a '79 454 but maybe someone has a manual or your emissions sticker still lists it) and things like the vacuum advance may not be any good, mechanical advance weights may be sticking, carb might need to be rebuilt or adjusted, even something stupid might be tripping you up like the throttle linkage isn't letting the carb go wide open. With the engine off have someone put it to the floor while you look at the carb to see if it's getting there.
Richard