camdoctor
05-11-2010, 10:50 PM
#2
A cam doctor report will tell you exactly how your cam was ground, but it will not tell you if your timing set is accurate, or if you have installed the cam correctly. The report can help you degree your cam more accurately, but doesn't take the place of degreeing.
05-11-2010, 10:56 PM
#3
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cam doctoring a cam will give you the following values:
-actual centerline of the intake and exhaust lobe
-opening of the intake and exhaust valve assuming the cam is installed "straight up"
-closing of the intake and exhaust valve assuming the cam is installed "straight up"
-actual duration of both lobes at various lift points
-area under the lift curve of each lobe at various lift points (in inch degrees)
-lash if applicable
-actual peak lobe lift
-lift at TDC of both lobes assuming the cam is installed "straight up"
and no this isn't the same as degreeing a cam. degreeing a cam is done in the engine to determine where the centerline of the cam is when installed in the engine (to determine if the cam is advanced, retarded or "straight up"). degreeing the cam is also used to properly and accurately position the centerline of the cam where you want to (advanced, retarded or "straight up"). hope that helps
-actual centerline of the intake and exhaust lobe
-opening of the intake and exhaust valve assuming the cam is installed "straight up"
-closing of the intake and exhaust valve assuming the cam is installed "straight up"
-actual duration of both lobes at various lift points
-area under the lift curve of each lobe at various lift points (in inch degrees)
-lash if applicable
-actual peak lobe lift
-lift at TDC of both lobes assuming the cam is installed "straight up"
and no this isn't the same as degreeing a cam. degreeing a cam is done in the engine to determine where the centerline of the cam is when installed in the engine (to determine if the cam is advanced, retarded or "straight up"). degreeing the cam is also used to properly and accurately position the centerline of the cam where you want to (advanced, retarded or "straight up"). hope that helps
01-16-2022, 09:05 AM
#5
I came to the conclusion that the summit 8720 was about the best for most torque in average street driving rpms. However I chose the Titan 2 as I was worried 11:1 cr was too much for the 8720......
01-16-2022, 09:57 AM
#6
The Cam Doctor will reveal what the cams actually specs as ground ended up being. These are often a little different than the advertised specs and occasionally surprisingly different.
My 224/224 .581/.581 XER 113 +4
Cam doctor results were something like 224.8/224.9 .582/.580 112.5 +3
My 229/229 .578/.578 114+2 was
~230/230 .579/.579 113.8 +1.9
Basically if its was all with in ~1 degree which is a good result.
Helps you know you got what you're paying for etc too.
My 224/224 .581/.581 XER 113 +4
Cam doctor results were something like 224.8/224.9 .582/.580 112.5 +3
My 229/229 .578/.578 114+2 was
~230/230 .579/.579 113.8 +1.9
Basically if its was all with in ~1 degree which is a good result.
Helps you know you got what you're paying for etc too.
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