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Old 04-06-2010, 06:47 AM   #6 (permalink)
Shawn D.
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
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Quote:
Originally Posted by Old Tele man View Post
...the "stock" OEM camshaft that came in the engine is about as "tame" and MPG-friendly as you're gonna get.
Exactly.

RandomFact314, the cam you posted about is a higher-performance cam with longer duration and higher lift, which is nearly certain to reduce mileage. Low-RPM cylinder filling will be worse and low-RPM torque will be reduced in exchange for better high-RPM cylinder filling and high-RPM horsepower. Note that you'd need different (i.e. stiffer) valve springs with that cam, which will further reduce efficiency.
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