Cams With Gill Exhaust

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04-19-2009 | 02:54 PM

#21

jeffswav

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Joined: Oct 2005

Posts: 1,899

Likes: 20

From: Millstadt, IL

Quote:

Originally Posted by US1 Fountain

Possibly, but not always ran as a blown motor. But at low rpms, is there a difference between the 2 inductions? Even with stock intake, still had no problems. The pic was more to show the low rise Gils with silent choice.

I fail to see how reversion could be a problem on the high rise Gils.

I'm not an expert that is just what I have heard. Typically they do not recomend silent choice with aftermarket cams on NA engines. I went with the long risers on the EMI's and sold the diverters. Loud is COOL however there are times I wish I still had the choice.

04-19-2009 | 05:36 PM

#22

acaruso

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Joined: Feb 2008

Posts: 181

Likes: 0

I have herd that GILS choke 500HP's (An engian bilder on here told me that CMI'S will give you 40 HP & much better midrang

04-19-2009 | 06:37 PM

#23

Griff

Charter Member # 55

Joined: Oct 2000

Posts: 20,241

Likes: 2,490

From: Omaha/LOTO

CMI's will not give 40 hp over Gil exhaust on a 500hp. You'd be lucky to see 10 hp on a dyno. I switched from Gil's to CMI's on my 525SC and saw ZERO gain in performance.