Your "new heads"...
Are they small port or rectangular port?
Lunati Voodoo cams are a good product, try and find a full kit including lifters and springs etc.
Having a stock bottom end will limit the longevity and drive ability of the engine if you hit it with too much cam.
Big blocks produce tons of torque....if this is a street driver, the small port heads have sufficient flow to match the torque curve of the BB....
Try spinning it past 4500 and you will find trouble, especially with those cast factory pistons....
Have fun...
