Just got back from PRI, new info on the Trick Flow Small Block Heads!

Heads are CNC'd. Published flow numbers are in the image below. In LS world its not like they're super great, BUT by small block mopar standards they're basically unheard of for a "shelf" part, particularly on the exhaust side. The Intake/Exhaust ratio is good enough I expect a custom cam is going to be necessary to get the most out of them.


As you can see on the bottom of that flow chart the exhaust were tested with a 1 7/8 pipe. Many (most) exhaust side testing is done without a pipe and heads tested with a pipe ALWAYS show higher flow numbers.