ATI 354040 Features:

Low gear sets increase the starting line ratio when launching. A car with a 4.10 rear gear and a standard low gear of 2.48 equals a 10.16 starting line ratio or, “SLR” (2.48 x 4.1). Utilizing the 2.75 gear set equals an 11.30 SLR (4.1 x 2.75). The new SLR 11.30 divided by the old low gear of 2.48 equals 4.54 - the new rear gear required to obtain the 11.30 SLR with the 2.48 low gear. Great for heavy street cars and big CID high torque motors that are RPM limited and use a 3.73, 3.90 or 4.10 rear gear. The low gear change will NOT change your trap RPM!