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Recomended Valve Springs For Comp Xe274hr Cam

  • Thread starter Thread starter fiveohlover
  • Start date Start date Jan 18, 2014
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smkshw

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Feb 12, 2010
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Mar 26, 2014
#21
  • Mar 26, 2014
  • #21
fiveohlover said:
Ya man i feel ya. I don't know much about springs or how to select them. I am hoping somebody will help me out with that part. I guess the comp springs are a little underrated for what you need so don't go and call up comp if you are planning to spin the motor as high as me.
Click to expand...

ya man...im watching this thread too,i read about the springs before i got my engine built and told the guy to upgrade them...definetly dont want it to granade like your,that sucks man....went through the build pics,this is only one i got with the heads apart that seems like he did somthing anyway?
 

smkshw

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#22
  • Mar 26, 2014
  • #22
but those look like the stock afr springs to me
 

Gearbanger 101

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#23
  • Mar 27, 2014
  • #23
smkshw said:
but those look like the stock afr springs to me
Click to expand...
They're dual springs....so unless you're running camshaft above .600 lift, you'll probably be just fine.
 

fiveohlover

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Mar 27, 2014
#24
  • Mar 27, 2014
  • #24
i am going to buy some valves from afr should i just buy some upgraded springs from them?
 

fiveohlover

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Mar 27, 2014
#25
  • Mar 27, 2014
  • #25
If there are any camshaft guru guys out there watchin this thread, the cam specs are
RPM Range:2200 to 6200Valve Timing :0.006
Lobe-Center Angle112Intake Center Line:108

IntakeExhaust
Valve Lash:Hyd.Hyd.
Duration:274282
Duration @ .050" Lift:224232
Valve Lift:0.5550.565
Lobe Lift:0.3480.354

Valve Timing @ 0.006" Lift:OpenClose
Intake:29 BTDC65 ABDC
Exhaust:77 BBDC25 ATDC
 

smkshw

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Mar 27, 2014
#26
  • Mar 27, 2014
  • #26
fiveohlover said:
If there are any camshaft guru guys out there watchin this thread, the cam specs are
RPM Range:2200 to 6200Valve Timing :0.006
Lobe-Center Angle112Intake Center Line:108

IntakeExhaust
Valve Lash:Hyd.Hyd.
Duration:274282
Duration @ .050" Lift:224232
Valve Lift:0.5550.565
Lobe Lift:0.3480.354

Valve Timing @ 0.006" Lift:OpenClose
Intake:29 BTDC65 ABDC
Exhaust:77 BBDC25 ATDC
Click to expand...
fiveohlover said:
If there are any camshaft guru guys out there watchin this thread, the cam specs are
RPM Range:2200 to 6200Valve Timing :0.006
Lobe-Center Angle112Intake Center Line:108

IntakeExhaust
Valve Lash:Hyd.Hyd.
Duration:274282
Duration @ .050" Lift:224232
Valve Lift:0.5550.565
Lobe Lift:0.3480.354

Valve Timing @ 0.006" Lift:OpenClose
Intake:29 BTDC65 ABDC
Exhaust:77 BBDC25 ATDC
Click to expand...

thats what i have,im happy with gearbangers thoughts,prob better with better springs but it does say maximum lift .600...but your engine blew not sure what happend, im not going to take it as high as you did now anyway,my car started dropping at 5800,so ill set my rev limit at 6200 i guess and i should be good for now....but id like to know what a good upgrade would be also...
 

A5literMan

At least it is lumpy...
5 Year Member
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Mar 27, 2014
#27
  • Mar 27, 2014
  • #27
I'm a novice in this subject but what I think I know is:
#1 those cam specs aren't overly aggressive and the Afr dual springs should be fine.
#2 you can have to much spring as well as to little(ie collapse a lifter/valve float/broken springs/etc
#3 I would without a doubt contact an expert and buy the right springs. Why run the risk of failure? For the savings of a few $$ just to risk the entire build?!
 

fiveohlover

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Oct 13, 2011
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Mar 27, 2014
#28
  • Mar 27, 2014
  • #28
Ok this may sound really stupid but, from what i heard comp underrates there springs. What if i called them up and told them i have a xe282hr cam which is the next bigger cam they have to offer. Is it worth trying to see what they recommend?
 

smkshw

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#29
  • Mar 27, 2014
  • #29
i looked at the specs that came with my cam,what comp recommends is less than what the afrs come with?
but i would call them and tell them what happend,and see what they say....but im learning here also,i thought just putting on a little stiffer springs would be it,but apparently thats not the case....
 

fiveohlover

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Oct 13, 2011
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Mar 28, 2014
#30
  • Mar 28, 2014
  • #30
smkshw said:
i looked at the specs that came with my cam,what comp recommends is less than what the afrs come with?
but i would call them and tell them what happend,and see what they say....but im learning here also,i thought just putting on a little stiffer springs would be it,but apparently thats not the case....
Click to expand...
what does comp
Where did you find that, what is the part # they recomended?
 

Gearbanger 101

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Mar 28, 2014
#31
  • Mar 28, 2014
  • #31
fiveohlover said:
what does comp
Where did you find that, what is the part # they recomended?
Click to expand...


http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1057&sb=2

Highlighted under valve springs.
 

smkshw

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Mar 28, 2014
#32
  • Mar 28, 2014
  • #32
fiveohlover said:
what does comp
Where did you find that, what is the part # they recomended?
Click to expand...
987-16 is whats on my cam card...little more pressure than afr actualy...but close
 

fiveohlover

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Mar 28, 2014
#33
  • Mar 28, 2014
  • #33
smkshw said:
987-16 is whats on my cam card...little more pressure than afr actualy...but close
Click to expand...
Ok, idk guys should i just get them?My problem before could of just been because of bad luck and had an old/bad spring?
 

smkshw

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#34
  • Mar 28, 2014
  • #34
fiveohlover said:
Ok, idk guys should i just get them?My problem before could of just been because of bad luck and had an old/bad spring?
Click to expand...
im waiting for some one to chime in here and say yes iust buy the damn things!..lol....all i know is i feel fine after a little reading with what i have...just not going to wind it up too high....

does your car make power above 6000rpm?....mine peeks at 5800-5900?
 

fiveohlover

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Mar 28, 2014
#35
  • Mar 28, 2014
  • #35
ya, my pulled really strong to the limiter. i have a ported gt 40 lower with comp polymer box upper though
 

Gearbanger 101

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#36
  • Mar 28, 2014
  • #36
smkshw said:
im waiting for some one to chime in here and say yes iust buy the damn things!..lol....all i know is i feel fine after a little reading with what i have...just not going to wind it up too high....

does your car make power above 6000rpm?....mine peeks at 5800-5900?
Click to expand...
Just go ahead and buy the damn springs.
 

fiveohlover

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Mar 29, 2014
#37
  • Mar 29, 2014
  • #37
haha i knew somebody was going to say that
 

smkshw

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Mar 29, 2014
#38
  • Mar 29, 2014
  • #38
fiveohlover said:
haha i knew somebody was going to say that
Click to expand...
you must feel better now....lol
 

fiveohlover

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Mar 29, 2014
#39
  • Mar 29, 2014
  • #39
ya
 

tonydalrymple

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Mar 31, 2014
#40
  • Mar 31, 2014
  • #40
fiveohlover said:
could i use the same valve spring specs as you? I am planning to spinning her to 6500
Click to expand...

I think I'd get a solid answer from a Comp. Cams rep. My former cam was a custom cam; a ton more duration with .555\.555 lift. I "guesstimated" that .010 more lift on only the exhaust side was not going to translate into needing more spring pressure. I have my shift light set at 6,200prm & rev limiter set at 6,400.... I occasionally hit that limiter right at the end of the 1\4. No issues N\A..... I've yet to find out on N2O...
 
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