Bjuice, Thanks for the response. I have been shifting at 5500 because some people told me you can't rev a stock bbc like a sbc., shows what they know. I leave at 2500 because the brakes won't hold the rear wheels,the car has disc in front and drum in the rear. They are not power brakes. This is a 1977 malibu (big car) bigger than 78-83 g-body. I had it weighed at the landfill, with me in it 3415lbs. I went 215 but that was a few twinkies ago. This spring I will definetly wind it up more.
Thanks for the help
Pete