• MANLEY EXPANDS "EXTREME DUTY" INCONEL EXHAUST VALVE OFFERINGS
      With engine builders striving to build higher amounts of combustion pressure through increasing supercharger and turbocharger boost levels, Manley Performance has the answer for these high exhaust temperature environments with its expanded Extreme Duty valve line.
  • NEW 331 - 392 EARLY HEMI INTERNAL BEARING SUPPORT FROM GOOD VIBRATIONS
      Those wanting to replace their stamped steel front covers on their 331-392 HEMI will be thrilled to know there is an A/A cast aluminum Internal Bearing Support available now! This USA Made Bearing Support also allows one to drive a mechanical fuel pump off the camshaft. Fuel Pump Drive & Internally Balanced Crank Hub are included.
  • TECH: SPARK PLUG INDEXING – IT’S ALL ABOUT COMPRESSION RATIO
    In most cases, the higher the compression ratio, the more consistent an engine might be in addition to allowing it to closely follow weather changes, a fact that most racers can appreciate. An engine with a high compression ratio can extract more power from a given load of air/fuel mixture. As such, achieving that high number has been the goal of engine builders everywhere. Arriving at a high compression number requires a generally small combustion chamber in the cylinder head combined with a piston dome that adequately fills that chamber at Top Dead Center. Noticeably, you have to make provisions for valve pockets along with one other thing… the spark plug.