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Educate me on cam specs and their effect on motor
#64684
05/27/08 05:54 PM
05/27/08 05:54 PM
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Joined: Jun 2005
Posts: 326
Davenport, IA
70shaker
OP
enthusiast
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OP
enthusiast
Joined: Jun 2005
Posts: 326
Davenport, IA
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I have a 472 Hemi with a solid roller that is a street car. It does not sound agressive enough for my taste. It is a Comp Cams with specs:
lift .616 int .577 ex.
285 duration at .015 lift
110 lobe seperation
I have an old Lunati roller left over from my racing days that I am toying with installing based on input from you guys. It has specs:
lift .600 int .602 ex.
.320 duration at .015 lift
106 lobe seperation
I know the bigger duration will give it a more aggresive sound but what is the effect of lobe seperation on a cam's function.
Thnks in advance for educating me.
Ex Hemi Racer
70 Challenger Hemi 4 speed clone
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Re: Educate me on cam specs and their effect on motor
[Re: 70shaker]
#64685
05/27/08 06:20 PM
05/27/08 06:20 PM
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Joined: Jun 2005
Posts: 326
Davenport, IA
70shaker
OP
enthusiast
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OP
enthusiast
Joined: Jun 2005
Posts: 326
Davenport, IA
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Never mind guys. I should have done some checking elsewhere. The Comp Cams website has all of the info I was looking for.
Ex Hemi Racer
70 Challenger Hemi 4 speed clone
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Re: Educate me on cam specs and their effect on motor
[Re: 451Mopar]
#64687
05/28/08 12:36 AM
05/28/08 12:36 AM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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gets sound, but sacrifice vacuum, for brake booster, also get more rough iddle. Of course gets also a great boost at High RPMs ( that's why I have read  )
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Educate me on cam specs and their effect on motor
[Re: 70shaker]
#64688
05/28/08 06:54 AM
05/28/08 06:54 AM
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Joined: Jan 2006
Posts: 8,162
USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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Re: Educate me on cam specs and their effect on motor
[Re: NachoRT74]
#64689
05/28/08 07:59 AM
05/28/08 07:59 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
gets sound, but sacrifice vacuum, for brake booster, also get more rough iddle.
Of course gets also a great boost at High RPMs
( that's why I have read )
actually a narrow lobe separation maximizes mid-range torque and drops off faster in the upper RPM range. a wider lobe separation will flatten out the torque curve, and sacrafice a little in the midrange, but carry the torque higher in the rev range, making more upper RPM power for a given duration.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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