Need some help on pulley sizing

daddio4048 said
Running a ECP 2 row 1 inch tube. 5 blade viscous fan with clutch & factory fan shroud. That's what's been puzzling.

those radiators seem to be well regarded, but i don't know enough about them to make a call one way or the other.

the fan/shroud and clutch are solid choices.

what's the water pump, how close is the fan, t-stat? when was the last time the block was flushed?

running hot> on the factory gauge, aftermarket gauge, or with a IR temp gun? boiling over?