Greetings all, I am looking for some info for the 283/327 Power Pack head information. I did a little putzing around on google, which is how I found you guys... The information from HAMB has been helpful, but limited. I have a 1962 327, with the power pack heads on it. They are casting #3795896. (date codes D2662/E2662) According to various web sources, they are 60cc with 1.72/1.50 valves. I have seen other sources who cite these as possibly being 'Vette heads for the 250hp motor. (the block is 3789817/T0601S date E2662, good for up to 275hp) So far, the information I have found indicates a 327 that was in a full size with a Powerglide. Based on that, I doubt that these heads would be 'Vette. (the engine has been rebuilt sometime prior to my getting it. It had a cast iron, 2bbl intake on it) Now, the question is this: Are these heads good for anything? I am not going to throw them away, but I have the choice of using them on the rebuild, or a set of 461's. I am leaning towards the 461's. I have a 71 Nova that the engine is going to go into. I am looking for something quick, and streetable, and basically, anytime I put my foot down on the loud pedal, it will get out of its own shadow. But, people have suggested that the Power Packs are good for low end torque. The car is going to be (for now) equipped with a Powerglide. It was said that the Power Pack heads fall off about 6000 or so. I do not have a realistic knowledge of the operating range of the engine as a daily commuter, once its together. So, would the Power Pack heads be fine, and save the 461s for my 350 build? Or use the 461s and swap them over later when the 350 is built? (because eventually, once the 350 is built, I will probably sell the 327) Thanks for your time!