Engine Health,what do you think?

[FED 387]

Ditto on changing stressed parts at regular intervals eliminates many problems
check oil & filters for particles
leak down test as well as blowby testing to check ring wear among other things
do not be afraid to take off the valve covers and give it all a good lookover for particles,broken springs ,rocker arm alignment , water leaks,etc--also turn engine over by hand while looking in these areas
check valve retainer/locks/caps appearance ,spring condition and pressures

dynos only tell you part of the story track performance is the true test--check chassis/tires etc regularly too

compare your performance with another similiarly classed car if possible see if when you do make changes if in relation to the other cars what happens faster/slower

keep records on every run-- your engine settings/weather etc so you can go back in future situations to compare that performance against a known condition in the past