W2 Race vs Econo Heads, What's the difference?

PRH said

Econo heads have the rocker stands cast into the head.
There are two versions of econo heads.
One that take the same length valves as normal SB heads, and one that uses the same length valves as the non-econo heads.

The ports on all of those versions are the same, when they are all of the same vintage.

The “econo” part was referring to the cost of the rocker gear.

Click to expand...

^^^^^^^THIS^^^^^^^

If you have the econo head buy the long valves and mill the stands down and use offset stands and blocks.

You do have options.

Without looking at the book, IIRC you can use the econo head up to .650ish lift. If you are using less lift than that, you can use the shorter valves and just buy a rocker geometry correction kit from B3 Racing.

You need to verify the lifer number first though.