Suncoast Converters 1.48 Reaction Carrier - Helical 5 Pinion Lightened - 2 Speed ONLY 404101

2.48 REACTION CARRIER - HELICAL, 5 PINION - NEW OEM GM T400 / 4L85E - STEEL. Do you need less or more starting line ratio (SLR) than you have now? Always spinning the tire or hitting the bar too hard? Ask about changing the low gear in your transmission. This change will not affect the Trap RPM! SLR is found by multiplying your rear gear by your low gear. The OEM T400 is 2.48 (2.48 x 4.10 = 10.16). If your car is heavy and sluggish in 60 feet, think about a 2.56 low gear or a 2.75 (2.75 x 4.10 = 11.30) which will make your car feel like a rocket! If you are constantly spinning the tire, think about less SLR (2.10 x 4.10 = 8.61 and calm the car down! All gear sets have weight restrictions. T400 aftermarket gear sets require a special snap ring when used in 1965 to approximately 1967 case applications.