Camshaft Selection Information

1MeanA said
+36 hp from a carb change sounds questionable. Since it is believed the factory rating of 275 hp was correct does how did they get 275 hp with a crap carb? Does this mean the dyno was 'optimistic'? I would be surprised if cam recommendations aren't in the XE268-XE274 range.

I’ve never tested it, but I have been told that a well tuned 340 would make 295-300 HP.

That would mean to get to 400 HP you’d need a 33% increase. That’s damned hard to do with bolt on‘s for sure.