does anyone know if there is a difference in the flow rate of the three different types of camel hump heads? is one type better than the other or are they basically the same? i have never used camel hump heads but, i'm looking for a better flowing iron head. Sick

 

The 461, 462, 291's all flow about the same, but, the 291's were made for 283 power pack set up with a 3.875 cyl. bore. The 461's were made for use with dome pistons.

 

what about the single hump 290's and 185's? and the double small hump 186's and 492's? the ones i'm looking at are 492's. sick

 

well ... i won a set of 462's for $153.00. they was fresh two years ago hope they haven't rusted. hopefully they will flow better than the ones i got. sick