Tapping noise only on acceleration....

[Matt@codered]

Tappet type noise when accelerating. The car had a failed cambelt which has been repaired and two tappets were replaced by the garage that damaged the valves. The car is a sprint car, so stripped/caged etc.....now we get a 'tapper' type noise ONLY on acceleration, not idle or fast idle.
I'm guessing exhaust gasket.......