AFR Heads

Mean416 said
I wasn't calling out w2's for being leakers. But w5s are.

Not all W5’s are. Poor aluminum and castings are the draw back if you go to far. Looked like you were calling out all W heads to me.

Mean416 said
I was calling out w2's for being cast iron.

IMO, in a sense you were because they are iron heads and by that metric, to heavy to use.

Mean416 said
Love w2's. But they ain't modern head by any stretch. And they require a lot of special parts to make work.

Major porting needed? No.

Mean416 said
PLUS...you still gotta port the snot outta them to get big power.

Like most any head. Then again, any head can be ported for more power. What’s big power to you?

Mean416 said
Nothing wrong. But they're super heavy and if you're porting them better be ready to pay a ton.

The MP templates can be used by a beginner and reach 300 cfm.