[AcampoDave]

I use an 18" Flexalite clutch fan with 6 fixed metal blades. It's mated to a Hayden clutch pt.#2747. It fits the stock shroud and is tightest at the top with about a pinky space of clearance using a short water pump. The smaller bolt circle on my short pump made it a bit of a p.i.a to install but it does fit with the bolts at the very innermost part of the slots in the clutch. If I remember right I may have even took a tad out of each slot with a circular file just to give it a tiny bit of wiggle room for an easier install. A pump and pulley with a dual bolt pattern would be the ticket but I couldn't find a dually pulley or wide pattern for a short pump. Notice how small of a bite my washers have on the flange. Trouble is bigger ones don't clear the stem of the clutch. It's been driven a lot tho' with no issues.