Hello...another new member knowing nothing about BBF's. I'm hoping someone can provide some much needed info about my 1977' 460 Panther built motor in my boat. The manufacturer is not providing any assistance! I do not know anything about the internal components, cam, pistons, etc. Here's what is visible: Heads - D3VE-A2A, Intake Manifold - ford - DOOE-8425C (7L21), Carb. - holly - 2R-4608. I guess my question is this, is this simply a stock engine with chrome valve covers with Panthers name on them, or has some modifications been done? I realize this is little info and seemingly a stupid post, but you guy's know your stuff and I don't have a clue! Any guess as to the HP output of such an engine, even if stock inside? Any assistance would be greatly appreciated and start me off on my learning curve...I'm reading everything on this site...it's excellent!!!