Starting line ratio for manual transmission application

[Glenn Briglio]

Originally Posted by tavbfl

Thank you all for your comments! The chart from Black Magic was exactly what I was looking for. To answer some of your questions, my 60 ft has been between 1.38 and 1.46, 330 ft between 4.10 and 4.15, and my first gear is 2.80. Finding gears for the Doug Nash is a challenge so this can be my callout to any racers that have them in a box on the shelf somewhere. I am looking to change to 5.57 gears as I am crossing at 6300 with the 5.14's and motor makes power to 7000. I am also dialing in a slipper clutch for the first time so it's a matter of optimizing my combo and then focusing on consistency.

You’ll need more rear gear to cross finish line at least 7500 rpm