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XR265HR in a 5.3 dyno graph and thoughts

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Old Apr 4, 2009 | 02:32 PM
  #61  
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Originally Posted by NicD
I am running 7.40 hardened pushrods and 918s even though the valve springs are kind of overkill for such a small cam.
Are those the adjustable rods or the 7.4 replacements without adjustment?
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Old Apr 4, 2009 | 02:50 PM
  #62  
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Originally Posted by agreif
Are those the adjustable rods or the 7.4 replacements without adjustment?
An adjustable pushrod is just for checking for pushrod length, you would use adjustable rockers to fine tune valvetrain clearance/valve lash
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Old Apr 4, 2009 | 05:08 PM
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See, I try to act like I know what I'm talking about and this happens. I thought there was some adjustable pushrod. Thanks for edjumacating me Billy. I'm guessing I should just go with Comp's pushrods, Comp PART #7955-16.
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Old Apr 4, 2009 | 06:51 PM
  #64  
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Originally Posted by agreif
See, I try to act like I know what I'm talking about and this happens. I thought there was some adjustable pushrod. Thanks for edjumacating me Billy. I'm guessing I should just go with Comp's pushrods, Comp PART #7955-16.
Whatcha buildin? Getting a new camshaft?
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Old Apr 4, 2009 | 06:55 PM
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Nahh, never upgraded the stockers with the new camshaft and figure it's probably not a bad idea, especially if I ever thrown on a charger or laughing gas.
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Old Apr 4, 2009 | 07:20 PM
  #66  
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Originally Posted by agreif
Nahh, never upgraded the stockers with the new camshaft and figure it's probably not a bad idea, especially if I ever thrown on a charger or laughing gas.
Gotcha, you have the right part number, 7955-16
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Old Apr 6, 2009 | 04:29 PM
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Originally Posted by jiar577
NicD, I installed the same cam on my '06 5.3 over the weekend. You told me before you set your shift points at 6300rpms, is that for all the gears?

Also, I've read mixed comments on removing the cats, some say removing them hurt lowend. Did you removed them? I'd love to see real info on cats vs no cats on the lowend.

Thanks
Yes, I set a 6300 rpm shift point for all gears.

I didn't do any back to back tests with and without cats on my truck but I have never seen a loss of low end on any car by removing the cats.
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Old Apr 6, 2009 | 07:25 PM
  #68  
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how well would this cam work with a blower or turbo setup?
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Old Apr 7, 2009 | 04:58 PM
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Originally Posted by 006rcsb
how well would this cam work with a blower or turbo setup?
I think it would work as well as any other mild cam. The powerband is nice and really brings up the top RPM area to be on a level playing field with the torque so it would be a good balance IMO for a turbo or blower. It doesn't have a ton of overlap either.
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Old Apr 10, 2009 | 10:21 AM
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NicD,

Tell me about your intake. I have an "01 CCSB HD 4X4 6.0 that curbs right above 6000# and I cannot lose any bottom end even with 4.10's and stock 31 inch tires.

Can you point me to good information to help me learn more about the LS intake and their characteristics?

Thanks in Advance,

Ronnie
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