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Discussion Starter #1
does anyone know why you need the raptor center intake valve spring with the Mudbuster Cam?it says you do on the hot cams web site.
thanks for your time.
 

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The middle lobe has enough lift that with a stock Grizzly spring it will bind and possibly break the rocker arm or worse yet drop a valve. While you have it apart you might as well install all the valve springs.
 

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Discussion Starter #3
all raptor springs or just the one,and the rest grizzly?
 

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You can do just the middle spring but I would change all of them if you have it apart already.
 

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Discussion Starter #5
i guess i should have made it more clear,sory.i ment change them all to rapter springs or just the middle one and put new grizzly springs in for the rest of the valves.
by the way thank you for the help,this info is actually for my brother in law.he has a 03 grizz.
 

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I would replace all the grizzly springs with the raptor springs.
 

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Discussion Starter #7
ok sparky660 i will let him know.thank you!!
 
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