Power differance between XE and XE-R lobes?

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Feb 8, 2007 | 05:27 PM

Flatlander

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From: Bartlett, IL

Power differance between XE and XE-R lobes?

I'm doing a h/c package on my '02 Z06, ordered AFR 205 milled to 63cc and 228*/232* cam with XE-R lobes-.588/.595 Just got cam and it's got XE lobes .571/.574 What kind of power differance would that make ? Thanks.

Feb 8, 2007 | 05:32 PM

brad8266

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Not much of a difference at all, the XE-R lobe just has higher lift and ramps a little faster, it wont make too much of a power difference IMO, maybe a few HP.

Feb 8, 2007 | 06:24 PM

Camaro99SS

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The XER lobes will give you a more broad powerband to where the cam "comes on" earlier and "falls off" later along with higher dyno numbers. A steeper ramp rate means the valves will spend more time at higher lifts then a cam of the same specs but on a more "lazy" grind. In essence you get more useable duration.

Jason

Last edited by Camaro99SS; Feb 9, 2007 at 08:17 PM.

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