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Re: 360 roller cam - safe to retard a few degrees?
[Re: MR_P_BODY]
#2640266
04/02/19 03:49 PM
04/02/19 03:49 PM
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Joined: Jan 2008
Posts: 4,255
Canada
WO23Coronet
master
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master
Joined: Jan 2008
Posts: 4,255
Canada
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I advance all my SB cams.. I have been from 99* to 108* on some but NEVER retarted... 99* had great torque but ran out of RPMs.. I tend to stay just a couple degrees advanced  Can you explain why advancing the cam is always referenced to the LSA? What is the relation between them? I know its an easy reference (it's 4 degrees advanced etc) but wouldn't it be more important to be concerned on the opening point of the intake for installation purposes rather than how far apart the exhaust and intake lobes are? If a cam with a 106 LSA runs well/makes more power at a 102/104 ICL, why wouldn't a cam with the same lobe specs but a 114 LSA also like being installed at 102/104 ICL? Or would it, and the old "install it X degrees advanced" has become so entrenched as common knowledge/settled science/popular opinion its what guys automatically spout?
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Re: 360 roller cam - safe to retard a few degrees?
[Re: WO23Coronet]
#2640276
04/02/19 04:25 PM
04/02/19 04:25 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I advance all my SB cams.. I have been from 99* to 108* on some but NEVER retarted... 99* had great torque but ran out of RPMs.. I tend to stay just a couple degrees advanced Can you explain why advancing the cam is always referenced to the LSA? What is the relation between them? I know its an easy reference (it's 4 degrees advanced etc) but wouldn't it be more important to be concerned on the opening point of the intake for installation purposes rather than how far apart the exhaust and intake lobes are? If a cam with a 106 LSA runs well/makes more power at a 102/104 ICL, why wouldn't a cam with the same lobe specs but a 114 LSA also like being installed at 102/104 ICL? Or would it, and the old "install it X degrees advanced" has become so entrenched as common knowledge/settled science/popular opinion its what guys automatically spout? I was using a known LSA cam based on what the card said checking with the wheel.. with advancing the cam I,m moving both the intake and exhaust points.. otherwise I need a new cam so moving it works for me
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Re: 360 roller cam - safe to retard a few degrees?
[Re: MR_P_BODY]
#2640310
04/02/19 05:34 PM
04/02/19 05:34 PM
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Joined: Dec 2005
Posts: 1,495
Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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You said you wanted to check to see if jasper phased the cam right. I can tell you that I have been to their plant and everything is installed dot to dot. So if they where off 1 tooth it would have been a tured.. they only use stock profile cams and if it was a roller motor they would have most likely used the original cam ft cams get replaced. If you retard that cam you would be very disappointed in the performance. If you go and waist your time and go and check the degree of that stock cam for what ever purpose you might as well put something in there that would make a difference in performance. By the way jasper dose not use junk parts. For a stock production reman motor they are the premier remanufacture
JAKES AUTOMOTIVE
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Re: 360 roller cam - safe to retard a few degrees?
[Re: JAKE68]
#2640349
04/02/19 07:17 PM
04/02/19 07:17 PM
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Joined: Sep 2014
Posts: 4,457
Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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You said you wanted to check to see if jasper phased the cam right. I can tell you that I have been to their plant and everything is installed dot to dot. So if they where off 1 tooth it would have been a tured.. they only use stock profile cams and if it was a roller motor they would have most likely used the original cam ft cams get replaced. If you retard that cam you would be very disappointed in the performance. If you go and waist your time and go and check the degree of that stock cam for what ever purpose you might as well put something in there that would make a difference in performance. By the way jasper dose not use junk parts. For a stock production reman motor they are the premier remanufacture Dot to dot means nothing. Never has, never will.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: 360 roller cam - safe to retard a few degrees?
[Re: madscientist]
#2640373
04/02/19 08:16 PM
04/02/19 08:16 PM
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Joined: Feb 2003
Posts: 7,982
Scranton, PA
Montclaire
OP
master
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OP
master
Joined: Feb 2003
Posts: 7,982
Scranton, PA
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Dot to dot means nothing. Never has, never will.
That's what their guy meant by "installed at TDC." Meaning no degree wheel, they rotate up to TDC and slam her home. Which is plenty enough to tell me I need to start at square one. As for the cam itself, I would go with a different grind but then I am looking at new springs since the stockers are marginal. All of that adds up and it's just not in the budget for now. If it moved a Ram truck, it'll move a 73 Charger.
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