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Old 26th April 2006, 12:02 PM  
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Ron Earp
United States
Join Date: Sep 2001
Location: NC, USA
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Posts: 6,990
Re: Gurney Weslake Head performance

They are eclipsed by variants like the 185s and others. And, bear in mind, there are shops that can improve the 185s with CNC porting while still keeping port velocity high. Not enough flow still - step up to 205 or 225s.

There are some figures running around on the forum on the GW heads though, showing them outflowing AFR heads. But the post didn't take into account the street/non-emissions 185 AFR heads and that things can be done to the AFR heads to improve them still further.

Fact is, you can get more flow for lower cost using a late model performance head.
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