Clean merc intake Dualplane Bronze insert, freshwater only

$75

I'm putting bigger carb on my 454 peanut heads would this be what I need or is this a rectangle port?

This is a square port intake, not what your looking for.

Don't want to HiJack a thread, but for Heath,
I have an older 7.4 cast iron intake. would that work for you?

What merc motor did these come on. Was it a HP motor what horse power. JOHN SR

My intake was from an old 1989-ish 330 horse 454 (Not a Mag)

I've heard dual plane rectangular ports support 500+hp especially the low rpm of marine motors. Say below 5500. Everyone likes the looks of single planes but many of the top engine builders agree the dual planes are better suited for many marine applications. Low and mid range torque will increase with minimal if any flow restrictions at the top rpm.

Not trying to push my intake or anything just how I understand it.

Bump

Have many other stock dress items if anyones looking to dress a motor on the cheap.