[FatBoy]

I have a 750cfm Holley on my 427, which was built by Southern Automotive and something isn't quite right with the engine. Although everything appears OK and it sounds fine, it just doesn't have the "go" that it should have and it's reluctant to rev.
I've checked the plugs and they are very clean and pale, maybe a little too pale. Fuel pressure is fine.
How do I know if the secondaries on my Holley are working OK?
I've removed the choke assemby and I'm running a K&N filter.
Any ideas ?

BTW, it has only run for a couple of very gentle hours.

Paul