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Chevy 700-R4 Transission Build - 700 Soup-Up

Jet Performance Transmissions Builds One Strong Overdrive

By Rob Fortier, Photography by Rob Fortier
  • Chevy 700R4 Transmission Build
    The servo is installed in the case and checked for clearance.
  • Chevy 700R4 Transmission Build
    The modification work then progresses to the bottom of the transmission. First, the fourth gear accumulator and spring are installed.
    Chevy 700R4 Transmission Build
    The modification work then progresses to the bottom of the transmission. First, the fourth
  • Chevy 700R4 Transmission Build
    The valve body plate is then drilled out to provide better fluid flow.
  • Chevy 700R4 Transmission Build
    After the plate is drilled and cleaned, it is installed with the 1-2 accumulator (which has stiffer springs).
    Chevy 700R4 Transmission Build
    After the plate is drilled and cleaned, it is installed with the 1-2 accumulator (which ha
  • Chevy 700R4 Transmission Build
    Prior to any upgrades, the entire valve body is inspected for free-moving valves throughout, and any necessary repairs made.
    Chevy 700R4 Transmission Build
    Prior to any upgrades, the entire valve body is inspected for free-moving valves throughou
  • Chevy 700R4 Transmission Build
    The non-lockup conversion requires that the fourth-gear pressure switch be removed and replaced with a brass plug.
    Chevy 700R4 Transmission Build
    The non-lockup conversion requires that the fourth-gear pressure switch be removed and rep
  • Chevy 700R4 Transmission Build
    Although it can be left intact, a faulty switch will cause serious malfunction and premature failure.
    Chevy 700R4 Transmission Build
    Although it can be left intact, a faulty switch will cause serious malfunction and prematu
  • Chevy 700R4 Transmission Build
    The culmination of the firmed-up shifting improvements is a stiffer throttle-valve spring.
  • Chevy 700R4 Transmission Build
    Nearing the end of the buildup, the valve body is re-installed in the transmission with the proper gasket.
    Chevy 700R4 Transmission Build
    Nearing the end of the buildup, the valve body is re-installed in the transmission with th
  • Chevy 700R4 Transmission Build
    With a new filter and pan gasket, all that's left before the T-700 is put on the dyno are the tailshaft parts.
    Chevy 700R4 Transmission Build
    With a new filter and pan gasket, all that's left before the T-700 is put on the dyno are
  • Chevy 700R4 Transmission Build
    The governor is installed with a new gear and checked for free valve movement. (The output shaft shown here is actually a shorter, 4WD unit; the standard shaft is longer, with a typical tail housing.)
    Chevy 700R4 Transmission Build
    The governor is installed with a new gear and checked for free valve movement. (The output
SOURCES
Jet Performance Transmissions
17482 Apex Cir.
Huntington Beach
CA  92647
Dept. SC
By Rob Fortier
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