text: It features forged steel connecting rods, a microfinished one-piece forged crankshaft, and Nissan's nylon intake manifold technology. It has low-friction molybdenum-coated pistons and the intake is a high-flow tuned induction system. Since its inception Nissan has improved upon the VQ35DE with changes keeping it an efficient class leading V6 engine. The engine was updated in 2005 as the VQ35DE Rev-Up. It included variable exhaust timing, a higher rev limit, and a revised oil pump, boosting the output to 297 crank horsepower. This motor was only found in the manual equipped 350z for the 2005-2006 and the manual equipped G35 2005 through 2007 model years.
  A modified version of the VQ35DE, called the S1, is produced by Nismo (Nissan's motorsports and performance division) for the Fairlady Z S-Tune GT. It produces  at 7,200 rpm, a higher rev-limit than that of the original VQ35DE.
  North American
  JDM and other markets
  VQ40DE
  The VQ40DE is a  longer stroke variant of the VQ35DE. Bore and stroke are . Compression ratio is 9.7:1
  Improvements include continuously variable valve timing, variable length/volume intake system, silent timing chain, hollow and lighter camshafts and friction reduction (microfinished surfaces, moly coated pistons). It is port fuel injected with platinum-tipped spark plugs. It produces  at 5600 rpm and  at 4000 rpm.
  DD series
  The DD series is a variant of the DE series engines with direct fuel injection (NEO-Di) and eVTC (electronically controlled continuously variable valve timing).
  VQ25DD
  The  engine has Bore and stroke of 85 mm and 73.3 mm respectively, with a compression ratio of 11 to 11.3:1. It produces  at 6400 rpm and  at 4400 rpm.