Offset grinding crank ?

[Dave Gantz]

Originally Posted by Mark Yacavone

Dave, Years ago , some crank strokes turned up short in teardown. NHRA decided there might be an advantage in altering the b/s ratio. They decided the limit would be + or - .015.
Of course come crank companies began to offer "rules rider " cranks at + .013..So it began..
Not a lot there, but you might as well take it. Plus, a smaller crank pin can't hurt, can it?

Thanks Mark. Still trying to learn something new every day.
IIRC, it was the early 90's? At the time, I remember my partner and I wondering what was up with it. When we ran a car in the mid 90's, if definitely wasn't fast enough to warrant being looked at. lol It was a 440, maybe we were bogus and didn't know it. I know we never checked the stroke. Figured a stock crank was just that.