text: The first 2.6 L RB26DETT was rated by Nissan at around  at 6,800 rpm and  at 4,400 rpm. By the end of production, power levels had gone up to around  at 6,800 rpm and  at 4,400 rpm, not only because of developments and modifications to the engine, but also because of the "Gentlemen's Agreement" made between automakers at the time to limit the "advertised" horsepower of any vehicle to . While the published figures from Nissan were as quoted above, it has been known among enthusiasts that the car actually had a factory power output closer to the  figure. The RB26 is widely known and became quite popular for its strength and power potential thanks to its iron block and forged internals, making it a modification friendly platform for tuners and aftermarket modifications in general.
  Some factory features of the RB26DETT:
  6 throttle body intake
  Solid lifter valve actuation, shim under bucket
  Belt driven cams
  CAS (crank angle sensor) driven off exhaust cam, tells ECU (engine control unit) crank/cam position
  water cooled, oil pressure lubed turbos
  OEM cast pistons have cooling channels under the crowns (extra oil cooling to keep piston temperatures down)
  Piston oil squirters
  Sodium filled exhaust valves
  8 Counter weighted crankshaft