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Comp xr275hr

Old May 15, 2008 | 12:54 PM
  #11  
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need .070" shorter pushrods to get .030" preload
when I tighten the rockers the valves open! I made sure the lobes were down. Good thing I didn't get pushrods before install. I did not measure base circle before install.

Last edited by ricoc; May 15, 2008 at 11:07 PM.
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Old May 16, 2008 | 07:46 AM
  #12  
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that a great cam, I wouldnt think about it twice, there are people running bigger cams than those and running mid 12's.... so you made a great choice... so what pushrods did you end up getting? the 7.400 should of worked perfect..
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Old May 16, 2008 | 11:32 AM
  #13  
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ordered 7.325"

I was not expecting to need shorter than stock, but I guess thats why comp recommends you measure preload after installation
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Old May 28, 2008 | 01:46 AM
  #14  
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all buttoned and tuning

I still have stock injectors so nothing done in higher RPM. Actually it's still in the shed learning how to behave at idle. Put plates on tomorrow
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Old May 28, 2008 | 01:55 AM
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Ill be waiting on a video

Dustin
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Old May 28, 2008 | 04:54 PM
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congrats on the cam
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Old May 29, 2008 | 07:02 PM
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Gears. Gears. Gears.



Might want gears next. But damn it's gonna run strong.
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Old May 30, 2008 | 05:25 AM
  #18  
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still tuning
WOW learning lots about timing!
4.11's are looking attractive
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Old May 30, 2008 | 05:28 AM
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Later on get some heads so it can breath. Take full advantage of that big cam.
Is that an RCSB truck?
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Old May 30, 2008 | 02:24 PM
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yep, just updated my signature
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