I'm looking for details on the 4V heads along with what differences exist between them and the SP4V version. From what I've found, thus far, they have raised intake ports. It seems the heads may extend farther inward than an OEM 4v head, raising the overall height of the intake by some amount.
The AFD website gives a "maintenance" page, so no info there, so if you guy have any brochures or spec sheets, I'd appreciate a copy or a link to where they can be found.
The AFD website gives a "maintenance" page, so no info there, so if you guy have any brochures or spec sheets, I'd appreciate a copy or a link to where they can be found.