Transmission Specalties missed mine by 60 rpm when I sent mine in to have adjusted this year but knowing your combo, past ET's, and having RacePak info helps a lot. I love how they cut it apart and clean it and call to talk to you the next day. A few hours later it's on the truck headed back to me

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time