TREMEC 5-SPEED EXTRA HD TRANSMISSION (CLOSE RATIO 26 SPLINE)

  • Close ratio 1st through 4th
  • 600 lbs./ft. torque capacity
  • Gear ratios: 1st 2.87; 2nd 1.90; 3rd 1.34; 4th 1.00; 5th 0.68
  • Features improved shift forks, one-piece counter-shaft, gears made of 4615 steel which increases the torque capacity over that of the M-7003-R58 model
  • Input shaft is 26 spline; output shaft is 31 spline
  • Requires bellhousing M-6392-R58 to install in a 1979-1995 Mustang
  • For 1979-1993 Mustang applications, use M-5059-A crossmember (79-81 will require modification)
  • For 1994-1995 Mustang applications, modify vehicle crossmember, lengthen driveshaft .625'' and use clutch fork E6ZZ-7515-A
  • 31 spline driveshaft yoke required
  • Requires unique clutch disc M-7550-T302 (10.5") designed for use with 26 spline input
  • Can be used in 4.6L applications with bellhousing M-6392-M46 and Clutch Kit M-7560-T46 (11")
  • Tremec recommends Synchromesh® fluid
Part Type
D-Line: Manual Trans
Warranty Availability
Not Available
Packaged Dimensions
12.75" x 17.5" x 34.25
Packaged Weight
130 lb(s)
UPC Code
756122076187
Country of Origin
Mexico