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...of using [[pushrod]]s. This arrangement is more complex, and relies on a [[timing belt]] or chain, but allows for greater valvetrain flexibility. ...ower. OHC also inherently allows for greater engine speeds over comparable cam-in-block designs.

...with the engine [[RPM]], also the valve lift varies. See [[variable valve timing]]. ...ne for the intake and one for exhaust valves, creating the [[dual overhead cam]], or ''DOHC''. The camshaft is driven by the [[crankshaft]] - through gear

...the addition of variable valve timing and knock sensors to delay ignition timing, it is possible to manufacture gasoline engines with compression ratios of ...ssion ratio, or in this case between 150 psi and 200 psi, depending on cam timing. Purpose-built racing engines, stationary engines etc. will return figures

The '''cam-in-block''' valvetrain layouts are ones in which the [[camshaft]] is placed ...the [[Oldsmobile V8 engine|Rocket V8]]. It was the first high-compression cam-in-block design, and is the [[archetype]] for most modern pushrod engines.

The '''cam-in-block''' [[valvetrain]] layout of [[piston engine]]s is one where the [[ ...Currently only General Motors, Ford, DaimlerChrysler, and Cummins produce cam-in-block or pushrod engines in any large numbers, although GM in particular

Aspiration: Natural, with Variable Length Intake Manifold via butterfly valve in Intake Manifold<br> Cam covers/Oil and Water pump housing: Magnesium sand castings<br>

...art of the 8-valve HF Integrale is a 2-litre 4-cylinder fuel injected twin cam engine, fitted with contra-rotating balancing shafts. This version incorpor ...HPE. In 1996 was introduced two 1.8-litre engines, one with variable valve timing, the naturally-aspirated 2.0 was discontinued.