Disappointed magnum head flow numbers....

318willrun said

• flow at low lift is important
• matching the rest of the car to the engine is important
• having the car "work" in itself is huge.

My point is, a well sorted out 385 hp powered Duster can beat a 485 hp powered Duster if the 385 mule is in a car that is well sorted out.

Click to expand...

Point one is not what my experience says. For more than one reason. I look at the numbers below about .200 lift, but unless something is way wrong I don’t care about that.

If you can test low lift at say...100 inches of water you’d see why the low lift numbers don’t mean much at 28 inches. Plus, the piston is in the way. Plus, you have to deal with cross flow at overlap. To fix that you have to reduce overlap and that’s a power killer.