Editing Quad 4 engine (section)

=== L40 ===
[[File:Quad OHC I4 engine.jpg|thumb|right|Quad OHC engine]]
This SOHC variant of the Quad&nbsp;4 was intended to replace the Pontiac 2.5&nbsp;L [[GM Iron Duke engine#Tech IV|Tech IV]] [[Overhead valve engine|OHV]] "Iron Duke" engine. Debuting in 1992 and called the Quad OHC, this eight-valve engine produced {{cvt|120|hp|kW|0}}, {{cvt|40|hp|kW|0}} less than the Quad&nbsp;4s of the same era. [[Torque]] was {{cvt|140|lbft|Nm|0}}. Power dropped to {{cvt|115|hp|kW|0}} in 1993 with an attempt by GM to reduce the NVH of the engine.

Although power and [[Fuel economy in automobiles|fuel economy]] were better than the Tech IV, the Quad OHC was retired after 1994 when the DOHC version became standard.

Applications:
* 1992–1994 [[Oldsmobile Achieva]]
* 1992–1994 [[Pontiac Grand Am]]
* 1992–1994 [[Buick Skylark]]
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