DieselTuff 2nd gen 6bt 3k/4k GSK & 12 HD Valve Springs
6bt 3k/4k gsk & HD valve springs
The Hammer Down Diesel Store
6bt 3k/4k gsk & HD valve springs
$199.00 USD
High Performance 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 3000/4000gsk.
If you want fueling close 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 ~148 lbs at the installed height of 1.94″
Cam nose pressure at 1.4″ is 245 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.
If you plan on running over 40lbs of boost or turning over 3700rpm, then you should consider a stronger set of valve springs then these 60# over valve springs.
Don’t be fooled by people selling cheap springs out there. A broken spring can take out an engine………..