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454 Mag modded Or stroked with non forged internals ? >

454 Mag modded Or stroked with non forged internals ?

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454 Mag modded Or stroked with non forged internals ?

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Old 03-24-2015 | 04:25 PM
  #21  
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hyd roller cam won;t break the bank and can run it with existing valvetrain. 112 LSA is the limit for stock GM exhausts. http://paceperformance.com/i-6254922...oller-cam.html
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Old 03-24-2015 | 05:05 PM
  #22  
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Originally Posted by dereknkathy
hyd roller cam won;t break the bank and can run it with existing valvetrain. 112 LSA is the limit for stock GM exhausts. http://paceperformance.com/i-6254922...oller-cam.html
That cam has the following specs at .050" if installed at 108ICL
211° Intake Duration / 230° Exhaust Duration
112° LSA
Events at .050": IVO -2.5° BTDC / EVC -1.0° ATDC
Overlap -3.5°

And your saying the following cam will revert more because of the 110LSA ?
This cam has the following specs at .050" if installed at 110ICL
214.5° Intake Duration / 219° Exhaust Duration
110° LSA
Events at .050": IVO -2.5° BTDC / EVC -1.0° ATDC
Overlap -3.5°


Note: the two different cams have the same IVO/EVC Events and Overlap at .050".
The second cam has more intake at .050" duration, tighter (110 vs 112) LSA (Lobe Seperation Angle), but less exhaust duration.

IVO = Intake Valve Opens
EVC = Exhaust Valve Closes
These two events determine overlap. IE: when both valves open.

Gwd, I hope I did my math right. LOL. It should be correct.

Last edited by SB; 03-24-2015 at 05:09 PM.
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Old 03-26-2015 | 10:54 AM
  #23  
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I was going by the rule of thumb that 112 lobe sep was the safe limit. I will refrain from mentioning a cam to anyone again.
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