Welcome to CHR! 454's will make a ton of torque with the right parts. Will the block clean up and hone ok at .030", or will it be bored? Not much of a chebbie guy myself, but with any engine build the parts selected for it have too match what you want the engine to do, and also the budget for the build! Aftermarket aluminum heads and a hydraulic roller cam can really wake up an old stocker, or if you want even more torque then a stroker kit to raise the cubes will make for a huge torque monster!!!!