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Performance question.

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  #1  
Old 05-20-2007 | 07:05 PM
Brooklyn Redneck's Avatar
Brooklyn Redneck
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From: Wilmington, NC
Default Performance question.

I recently upgraded to andrews 26g cams, 95" pistons,and screaming eagle heads,also running with a pcIII,and vh tru duals. The problem comes when going through the gears, pulls real hard through the first half of each gear then seems to really flatten out,almost like I missed a shift. Is this a map problem,like not enough fuel in the upper rpm range,ormaybe to small a cam for this setup?? I'm confused any help will be greatly appreciated.Thanks
BR
 
  #2  
Old 05-20-2007 | 07:15 PM
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PhilM
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From: TX
Default RE: Performance question.

THe Andrews 26 is a bolt-in cam that is "designed" to perform best with stock compression and the flow rate(s) of stock heads.

You are likely close to 10:1, if you have S/E perf heads vs. 9:1'ish that stock is. Furthermore, the 26 is a low end torque cam. It will fall off over about 4000~4500 RPM. It is also quite likely that you'll experience some pinging at that CR with 26's.

In that build, you probably be better off with S&S 570 cams~ like the "Hippo Build".
 
  #3  
Old 05-20-2007 | 08:14 PM
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nvsteve
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From: Nevada
Default RE: Performance question.

Are you bumping therev limiter?
What rpm does it feel like it flattens out.
 
  #4  
Old 05-20-2007 | 09:22 PM
Brooklyn Redneck's Avatar
Brooklyn Redneck
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Default RE: Performance question.

I don't think I'm at the rev limiter, it's starts to flaten out at about 4500 rpm.
 
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