High throttle miss

[Gaz64]

Hi Bryan,

For the OP, this is a carburettor problem.

For an engine that idles at 16 inches, I don't know why his throttle plates are drilled for a racing cam.

Your rev limiter probably does make it misfire, dropping cylinders out.
Depending on who's rev limiter you have as to how smooth a cut it is.
Some will hold the rpm at what you set, some are rough as.
With a carburettor, you will get exploding fuel in the exhaust while on the limiter.

Remember, you have it fitted to protect the engine.
If you hit the limiter often, you need a visible progressive shift light.

Gary

[Texasdoc]

The misfire was due to broken valve springs as noted previously in this thread. Those have been repaired. It was not the rev limiter - when this thread was started I didn't even have a limiter activated. There is no longer a misfire.

I am working on getting the carb tuned for my engine. The motor runs strong and pulls hard. Just trying to tune the transfer slots - they were initially very rich, then lean, now almost there.

[Gaz64]

Good to hear you are getting there.

Does sound like a common problem with some Holleys.

Gary