Maniacmechanic1
He replaced the MSD distributor/ignition, its going to be fine.
I run a complete MSD ignition and while i dont have many miles on the car, i hold it on rev limiter every single ride and was never a single problem with detonation or the engine.
One thing to keep in mind is that the rev limiter is progressive, if its set at 6000 rpm the engine may still go up to 6200~.
Rick
About the detonation can, i use the MSD knock alert, i think its discontinued.(i can design a electrical circuit for that if thats necessary, i can also have PCB made for us from the factory and do the assembgly too. We can also add a microcontroller( and some lcd or bluetooth app to run on your phone too
)
You should just try to avoid that 14.7:1 air fuel ratio since this is a carb equipped RACE engine, you should forget about gas milleage a little bit.
Lean plenum charge will cause detonation off the line(i had the same problem when i tuned my engine, it did show on the knock alert)