So, I had the frame laid up by Darryl Schroeder in Troutdale. I wanted a QC and he had this one on the shelf. It had the helical cut gears with it. In chatting with the tech at Winters, he suggested ditching the helical gears for straight cut for this rear end. We are going to run them to see how they work out first. I put the big gear on the bottom which should produce a 3:83, big gear on top would be 4:38 he said. I am running a T-5 behind a blown flatty so I'll start low for now as suggested. That's the glory behind this rear end, a quick gear change to fine tune the performance. He said this rear end was built for straight cut gears, my flatty will likely not produce the torque or speed it was designed to handle.