Hi, Sorry for the remedial question - but I?ve tried to find this answer on the net with no success.
What does the number associated with different heads mean? Specifically: CB 44 http://www.cbperformance.com/ProductDetails.asp?ProductCode=1443 <http://www.cbperformance.com/ProductDetails.asp?ProductCode=1443> or Revmaster 49 http://revmasteraviation.com/?p=125#more-125 <http://revmasteraviation.com/?p=125#more-125> or MOFO 42 http://www.mofoco.com/item/MOFOCO_042_BIG_VALVE_CYLINDER_HEAD/235/c52 <http://www.mofoco.com/item/MOFOCO_042_BIG_VALVE_CYLINDER_HEAD/235/c52> vs MOFO 50 http://www.mofoco.com/item/MOFOCO_050_BIG_VALVE_AIR_COOLED_VW_CYLINDER_HEAD/234/c52 <http://www.mofoco.com/item/MOFOCO_050_BIG_VALVE_AIR_COOLED_VW_CYLINDER_HEAD/234/c52> ??? Cheers, Owen
