I am not really looking for fast, i am looking for high revs and old quality, i only have the 283, in searches for a 350 i have turned up empty handed around here, so i took what i could find, he put the 406 in there because he wanted his nova to be big, i just want my z to move...i want to get a compression ratio of at least 10:1, so any help for getting me there would be great, nothing too big is planned besides that...it has power pak heads, does anyone know where i could find info on them?? the corvette had fuelie heads and a 4 bbl carb, so my setup shouldn't be too far off....at least in looks...i just want a good engine that's old and runs nice...nothing extremely fast, and not a torque monster...just small and moving....any suggestions on what to do with the 283 to keep it sane without dumping a lot of money on it would be nice...thanks for your advice tech, but any suggestion other than go bigger would be appreciated...