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Modding a 4.8L

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Old Jun 8, 2009 | 10:33 AM
  #21  
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I really appreciate all the useful info. Is that cam a custom grind or something off the shelf? I want it a little choppy like you said but nothing crazy. I haven't done much reasearch on actually how a cam works. The LSA you listed is 110+4, 4 is the amount of advance that is degreed into the cam? Also, does anyone have some dyno numbers with this cam or any 1/4 times? 212/218 .558/.563 110+4...
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Old Jun 8, 2009 | 10:35 AM
  #22  
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Originally Posted by SpeedDensityZ
I really appreciate all the useful info. Is that cam a custom grind or something off the shelf? I want it a little choppy like you said but nothing crazy. I haven't done much reasearch on actually how a cam works. The LSA you listed is 110+4, 4 is the amount of advance that is degreed into the cam? Also, does anyone have some dyno numbers with this cam or any 1/4 times? 212/218 .558/.563 110+4...
That would be a custom grind... And Yes the +4 is the amount of advance ground into the cam... As far as i know, i have never seen anyone with that cam..
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Old Jun 8, 2009 | 10:45 AM
  #23  
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I'm running a TSP 220/220 .581/.581 at 111 LSA, and woke up the 5.3L real good.

What I noticed with this LSA is that my midrange is very strong. I have the stock stall and the RPM drop between shifts is not that significant. It pulls strong and it isnt crazy choppy.

I recommend this costum grind cam.
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Old Jun 8, 2009 | 10:50 AM
  #24  
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I run the comp xr265 high lift I love it, but I'm pretty sure I should run a 3k to a 3200 stall. I would go with what blackgmc offered, it should make good low end and pull good throughout the rpm range.
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Old Jun 8, 2009 | 11:00 AM
  #25  
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From: Macclenny FL
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With this cam I will also need 918's right?? Would I need new pushrods? If so, what size? I'm just looking for a cam that will meet my goals. 13sec qtr. and a good DD.
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Old Jun 8, 2009 | 12:27 PM
  #26  
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Originally Posted by SpeedDensityZ
With this cam I will also need 918's right?? Would I need new pushrods? If so, what size? I'm just looking for a cam that will meet my goals. 13sec qtr. and a good DD.
I would go with the PAC 1218's over the Comp 918's due to everything that I've read about the Comp's breaking. I recommend some good hardened pushrods for cheap insurance, although there's always some debate in reference to their necessity...
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Old Jun 8, 2009 | 02:18 PM
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i wouldnt do any kind of spring besides duals. too many others break, even the "revised" 918's.
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Old Jun 8, 2009 | 02:23 PM
  #28  
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Originally Posted by mcfarlnd
i wouldnt do any kind of spring besides duals. too many others break, even the "revised" 918's.
+1!!! I feel warm and fuzzy with my duals shifting at 7k occasionally and 6800 regularly...
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Old Jun 8, 2009 | 10:53 PM
  #29  
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From: Hale Center, Tx
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Hey BlackGMC, just wonderin' where you have your cams ground at? I was thinkin' about getting ahold of Crower to grind me up one... maybe you or someone else can throw some light at me if there's a better price-for-the-product vendor. Much obliged.
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Old Jun 9, 2009 | 11:11 AM
  #30  
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Corey, you're running a Flowtech/Ed Curtis cam now, right?
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