Ive got an old '79 5.7L from a k20 pickup and i plan on rebuilding it to put in my f-body camaro (82). I know this motor has relatively low HP (around 160-175) and im looking to do some upgrades to it durring the rebuilding, aiming for around 250ish HP. Upgrades will be a hotter cam, headers(shorties), and a 550 cfm edelbrock 4bbl. Do you think these upgrades will be enough to significantly increase the HP of this motor? or will i have to tamper/ replace the cylinder heads too (apart from matching it w/ cam), also add a 600 or 650 cfm carb instead?

I've got help on rebuilding the motor but as for the gains/losses in HP/TQ i have no experience or advice on, so any input is GREATLY apreciated!

thanks!