L79v Gene sound like my motor, lees a couple of cubes. I have a 482 with a hydro roller, 587"-607" 112LSA. 10.0 compression. Nothing fancy. Makes stupid torque off idle and smokes the tires. You are not crazy, yet(
) with power. Compare price for rebuild heads against buying new. Without a good history of how the car was used or abused we are at a crap shoot. Only other note, where both heads with problems or just one? I know Dove has worked to repair both the forging issues and their reputation. We don't know how old these heads are and when they where cast. I would price around and get prices from guys here about getting a set of stage 2 heads with basic cleaning of ports, gasket matching to the intake, and unschrouding of the valves a little. Blue thunder, Edelbrock, Shelby( buying a name, but foundry work is good) or maybe a set off CC.
We don't need to get crazy here. Other side note, you didn't say which manifold you are running but some of them have a 10-40 cfm different in flow to each cylinder. Joe Craine does an intake port matching to get any intake manifold within 3-6 cfm and help balance out air flow to all cylinders. The job looks like jewelry when done. It's a shame to cover it up. 1 week turn around, great price. Did a Dove intake for me, works great. Sent many members to him. All have been very happy with his work. Call for cost 210-521-4620 is last number I have at this time. Good luck. Tell us how it turns out. Rick