Arrington ST-3A Camshafts
Arrington High Performance HEMI Camshafts
Arrington's line of high performance camshafts for your 5.7L or6.1L Dodge, Chrysler, or Jeep HEMI engine are dyno proven to add 52 horsepowerand 20 ft-lbs of torque to an otherwise stock engine, with basic tuning. Notcompatible with VVT motors.
For nearly a decade, Arrington has designed HEMI camshafts usingboth engine and valvetrain simulation in order to build the best cams forprofessional race teams. We use the same process to design and evaluatecamshafts for our Mopar street and race engines. When creating the SR-2B andST-3A, Arrington used the same HEMI Virtual Valvetrain process and race proventechnology that it puts into every race engine. No other camshaft on the marketcan match these new cams in terms of street-able power and their advanced development process.
NOTE: A valve spring upgrade is required in order to install these camshafts. Catastrophic engine failure may result if the stock valve springs are not upgraded.
| Specification | SR-2B | ST-3A |
|---|---|---|
Intake Duration | 223 | 225 |
Exhaust Duration | 234 | 234 |
Intake Centerline | 112 | 112 |
Lobe Separation | 114 | 114 |
Intake Lobe Lift (in) @ 1.6 Ratio | 0.560 | 0.592 |
Exhaust Lobe Lift (in) @ 1.6 Ratio | 0.555 | 0.594 |
Lash (in) | 0.006 | 0.006 |
Exhaust Opening (º BBDC)* | 52.69 | 53.4367 |
Exhaust Closing (º ATDC)* | 0.1253 | 1.0052 |
Intake Opening (º BTDC)* | 0.7095 | 0.5346 |
Intake Closing (º ABDC)* | 43.8096 | 44.7882 |
| * Measured at .050" lobe lift | ||
- Tuning - Installing without this item can cause catastrophic engine damage.
- Fits 5.7L and 6.1L non VVT HEMI engines, but NOT engines with variable valve timing (VVT)
- Dodge Challenger R/T / SRT-8 2008-2010
- Charger RT / SRT8 2006-2010
- Magnum RT / SRT8 2005-2008
- Chrysler 300c R/T / SRT-8 2005-2008
