Aftermarket Valvebodies

Well we know 727/904 is old technology, but works well ! Shift speed is much faster with a Griner and shifts are way more positive. I took the advise of my machine shop buddy a few years back and switched over, I would have never believed the difference myself until I drove it. The first time I hit 2nd I could tell the difference, even downshifting was more positive. When I sold my '65 coronet, the first comment out of the buyers mouth was about how the trans shifted .....