Will Trick Flow Heads work on a B block 400

[moper]

"I've noticed that the 2 hp per cfm rule doesn't seem to apply to most engines."

It applies to efficient packages. Meaning the individual parts, machining, and assembly all play a role in reaching that number. The less efficient the engine, the lower the potential power. Simple reality.

 

[AndyF]

"I've noticed that the 2 hp per cfm rule doesn't seem to apply to most engines."

It applies to efficient packages. Meaning the individual parts, machining, and assembly all play a role in reaching that number. The less efficient the engine, the lower the potential power. Simple reality.

There is a thread on here on about my 514 engine that makes 900 hp. That engine has EZ heads on it which flow about 365 cfm on the intake side. So that engine is making more than 2 hp per cfm. But that engine has 15:1 compression, dry sump oiling and 0.900 valve lift. So the 2 hp per cfm rule of thumb really only applies to "typical hot rod" engines with "typical bolt on parts".