A couple of weeks ago I think I over-revved my engine and floated the valves while I was doing a burn-out, ever since the it seems that the engine is a little sluggish and is'nt as responsive as it was before. Could doing what I did have bent a push rod or damaged a lifter?
I'd test my valve springs.
My ol ladys gt was droping off power when it shouldn't have been. At fist I thought I was sucking the fuel line dry. I installed a fix for that and same problem.
I desided to put in better springs and it gave the car it's pep back.
May just be worn parts.