Economy camshaft swap

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Economy camshafts are the opposite of "hot" cams favoured by racers. But rather than aiming to increase high RPM performance, economy cams are cut to enhance efficiency at lower engine speeds where ecodrivers tend to drive.

"Cool" cams may have lower lift, duration and more advanced timing than regular cams, resulting in more low end torque at the expense of high end power.

The Geo Metro XFi had a factory economy cam, and owners of garden variety Metros regularly swap it in place of the standard one.

Instructions for mod

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Information required: A listing for different ways to do this if its different on different types of cars

User experiences

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User data
User Name Car Make, Model, Year Cost of Mod Time to Perform Mod MPG Before Mod MPG After Mod MPG improvement guess Instruction Link
Example Data Saand Example Data Mazda, 626, 1991 Example Data $5 USD Example Data 1 Hour Example Data 27.2 Example Data 29.8 User mod detail or measurement detailed data

Problems / Consequences of mod

Information required: What are the consequences of the mod, Eg: drivability issue, stalling, engine wear,


Forum thread links

Blackfly XFi? Cam swap!

External links

International heart transplant: the Blackfly gets an XFi cam