I ordered a 6.75" crank pulley earlier this year for my Vortech. Went to install it today and it hits the water pump pulley. What I read here before, I thought it didn't hit until 7".
Checking to see if I missed / did something wrong. If anyone had a water pump pulley made to fit, do you know what size worked?

Follow up:
The interference is just 0.01". ASP said this size does have interference and they make a water pump pulley that steps around the interference.

 

My crank pulley also made by ASP is 6.5" and whilst a tight fit, it clears my OEM water pump pulley just fine. Your only option is to get a smaller water pump pulley (whichever one ASP offers to get around this issue).