2nd gen Cummins 6bt 3k/4k GSK & 12 HD Valve Springs
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1994-1998 3000/4000 GSK plus 60lb over stock Valve Springs (6bt kit)

 High Performance PDR 3000/4000RPM Governor Spring Kit plus Genuine Cummins #3916691 60lb over stock Valve Springs

For the 1994-1998 6BT engine with inline injection pump. 6bt kit sold as a set of twelve (12) Cummins #3916691 HD valve springs & a PDR 3000/4000gsk.

If you want fueling to 4000rpm, install all GSK springs...if you want fueling to 3000rpm, leave the 2 smallest springs out of injection pump on install.

The seat pressure on these springs is ~150 lbs at the installed height of 1.950 x 1.69 rocker ratio = 253.5 lbs
Cam nose pressure is 210lbs x 1.69 rocker ratio = 359 lbs

If you plan on running a P7100 gov spring kit (GSK) or an exhaust brake, you will need HD valve springs. These heavy duty valve springs are required if you plan on running any application between 3200rpm to 3800rpm and/or up to 48psi safely and also required for the safety of your engine if you install an exhaust brake.

Don't be fooled by people selling cheap GSK's and valve springs out there. A broken spring can take out an engine.

  • 3000/4000 rpm rev kit & 60lb Over stock valve springs
  • Comes with springs for intake and exhaust valves
  • For 1994-98 12v engines with inline inj pump
  • Kit for fueling past stock 2600RPM...will allow fueling for 3000 or 4000rpm
  • PDR Diesel GSK & Dodge Cummins HD Performance Springs

Over 3800rpm, we highly suggest the dual valve springs.

  • Item #: 6bt 3k/4k gsk & HD valve springs
  • Manufacturer: Cummins & DieselTuff

2nd gen Cummins 6bt 3k/4k GSK & 12 HD Valve Springs

Price: $169.99
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