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Pushrods variable future

joela submitted on 1/22/2007 Official Bell & Ross Timestamp: 3:01:45 PM

4 user comments | Category: Misc News | Source: | SOURCE: blogs.sporttruck.com

Previously, independently-variable intake and exhaust timing was only possible with dual overhead cams.

But thanks to the engineering wizards at the British firm Mechadyne, pushrod engines can now benefit from this technology as well.

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About the Author

joela

Full-time blogger. Enough said.

— joela (View Profile)


User Comments

neutral

Hasn't GM been doing this for years? The 3.5 and 3.9 pushrod have variable cam phasing.

— neutral (View Profile)

Posted on 1/22/2007 11:03:55 PM | reply to this comment | Votes: 1   

neutral

Displacement: 3510cc

Assembly Site: Ramos Arizpe, Mexico

Configuration: Overhead Valves (2 valves per cylinder).

Horsepower: 224 @ 5800 rpm*

Torque: 220 @ 4000 rpm*

Applications: Chevrolet Impala, Chevrolet Monte Carlo, Saturn Aura, Pontiac G6

Features: Variable Valve Timing
U Flow Cooling, E85 Capable

*For 2007

---------------------------------------------
Displacement: 3880cc

Assembly Site: Tonawanda, New York

Configuration: Overhead Valves (2 valves per cylinder).

Horsepower/Application:
233 hp @ 6000 rpm (Chevrolet Impala)

Torque:
240 lb-ft @ 4800 rpm

Features: Dual Variable Valve Timing
Roller Rocker Arms
Active Fuel Management (DOD)

— neutral (View Profile)

Posted on 1/22/2007 11:23:06 PM | reply to this comment | Votes: 1   

dumpsty

I like that the big American V-8s have the multiple displacement features. That's a big leap over past conventional thought.

— dumpsty (View Profile)

Posted on 1/23/2007 7:20:25 AM | reply to this comment | Votes: 1   

chewy

But that doesn't work in the real world, look for the Edmunds pickups comparison, the Chevy has the lowest real world fuel economy.

— chewy (View Profile)

Posted on 1/23/2007 7:41:06 PM | | Votes: 1   

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