Originally Posted by KurtP
That is absolutely un true.
They may alter the spool characteristics to a particular set up depending on overlap and duration, or may not yield full gains higher in the rev band because the turbo is too small, but they are absolutely not an obstruction.
I would argue that next to selecting the appropriate turbo charger for one's goals, cams are a close second.
Regardless of your seemingly bigger is better argument, Kelford 264s are a good match for a Dom3xtr 10cm 3"... This is the Dyno Graph with JE Pistons / Heads on Methanol.