4L60E 4L65E 4L70E 700R4 TRANSMISSION FRONT PLANET KIT 2.84 RATIO with INPUT SUN GEAR by SONNAX FITS '82-'14 (77284-K)

SKU:
S74582HDK
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$792.88
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700R4  
4L60E
4L65E  
4L70
'82-'14 4-SPEED AUTOMATIC TRANSMISSIONS:

FRONT PLANET KIT
2.84 RATIO with INPUT SUN GEAR
  • SONNAX 77284-K
  • STAGE 1, 2, & 3 PERFORMANCE
 
 
 
 
 
 
  • The steepest first gear ratio of any four-speed automatic (3.06) belongs to the GM 4L60 (700-R4)/4L60-E family of transmissions. The shift from 3.06 ratio (1st Gear) to 1.63 ratio (2nd Gear) is a dramatic RPM drop that causes performance engines to fall out of their power band.
  • Sonnax 2.84 input carrier kit 77284-K transforms the popular 4L60 series from an OE “wide ratio” 3.06/1.63 to a “close ratio” 2.84/1.55 for game-changing acceleration on the track. This keeps performance engines in the optimal power band while allowing a longer pull in first and second gears, improving consistency and performance
  • Manufactured and engineered for outstanding durability, the carrier's gears are precision-ground to OE standards, thrust washers feature highly wear-resistant PTFE-coated material and the captured bearing is thicker late design. Lube channels direct oil to the pinion pins, and the carrier can be disassembled for inspection and service.
  • FITS:
4L60-E 1993 - 2014
THM700-R4 1987 - 1992
THM700-R4/4L60/MD8 1982 - 1993
4L65-E 2001 - 2007
4L70-E 2006 - 2009
4L60-E-HD 2002 - 2006

  • Keeps engine in power band on 1-2 and 2-3 shifts
  • Delivers longer pull in 1st and 2nd Gears
  • Six-pinion planet loaded with advanced durability features
  • No special tools or machining required
  • PHOTO SHOWS ACTUAL FRONT PLANET KIT
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