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degreeing camshaft?

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Old May 7, 2008 | 06:08 PM
  #11  
hotrod351's Avatar
hotrod351
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Default RE: degreeing camshaft?

if the motor is stock and your putting the stock cam or new stock cam then that would be the least of my worries. i have friends degree hp cams and they always come out on specs, meaning they dont have to do anything to them. the cam grinders are pretty accurate with them. if you happen to know someone that knows how to do it and has the tools , then great, if not then dont loose any sleep over it.
Old May 7, 2008 | 07:04 PM
  #12  
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baxsom
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Default RE: degreeing camshaft?

the comp cams instruction sheet says that it is not absolutly necessary to degree their cams for street applications
Old May 7, 2008 | 07:33 PM
  #13  
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ky
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Default RE: degreeing camshaft?

dont always listen to writen out instructions. a lot of us are builders and know what we're talking about. you need to degree any cam. its part of building an engine. no questions asked.
Old May 8, 2008 | 09:48 AM
  #14  
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quesey
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Default RE: degreeing camshaft?

allways read the instructions!and toastintx if you unsure just ask they guys @ the machine shop that done the work on block for you or if you have someone you know thats built motors before see if they would mind helping its not rocket science just be sure and go slow if you've never built one before. if i were closer i,d be more than glad to help
good luck and happy driving
Old May 8, 2008 | 11:02 AM
  #15  
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Default RE: degreeing camshaft?

ORIGINAL: quesey

ORIGINAL: urban_cowboy

Regardless of application, you should degree the cam. There are many philosophies on this but we checked the intake and exhaust centerlines and split the difference so that the centerline on the exhaust and intake are equal distance from the advertised centerline. All cams, or I should say many cams, are not exactly as they are advertised. You may be plus or minus a few degrees on the events so your centerlines are going to off. If you just check the intake, you are going to sacrifice exhaust performance. This is why you split.

Again, regardless of how many horsepower you are putting in, you need to do this. There is no reason to advance or retard the cam, but you should degree it to get it the the best centerline possible.
There is no reason to advance or retard the cam, but you should degree it
huh??????????
Let's assume you have set yourcam centerline set correctly. Advancing and retarding the cam only moves the power band up or down in the rpm band. If you don't believe me, plug try playing with a dyno program.

The trick is setting the centerline correctly. RGMotor is right about checkingthe centerline using several cylinders because many times the lobe will be slightly different. Great engine builders blue print all cylinders, goodbuilder blue print some, many blue print #1. This is bad practice because what happens if #1 is off by several degrees but the others are on? If you set up for #1 it will be optimized but your other 7 will suffer. It is best to take an average and your motor will perform better and more consistantly across all cylinders. As for timing sets, you should get a decent adjustable timing set if you are in to degreeing an optimizing your cam. Otherwise, you are just making coarse adjustments.
Old May 8, 2008 | 11:09 AM
  #16  
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imnotmy77stang
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Default RE: degreeing camshaft?

you guys overthink situations way too often.

if your building a street car just put the goddamn thing in there unless you happen to already have a degree wheel or someone you know has one you can borrow.

my shop built oem replacement motors all day long and i ground cams for many of those motors. did we use a degree wheel for any of those motors? does any other major engine remanufacturer? hell f*ck no.

when we built a race motor for the circle track did we degree the cam? hell f*ck yes.

/thread
Old May 8, 2008 | 11:31 AM
  #17  
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ky
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Default RE: degreeing camshaft?

ORIGINAL: imnotmy77stang

you guys overthink situations way too often.

if your building a street car just put the goddamn thing in there unless you happen to already have a degree wheel or someone you know has one you can borrow.

my shop built oem replacement motors all day long and i ground cams for many of those motors. did we use a degree wheel for any of those motors? does any other major engine remanufacturer? hell f*ck no.

when we built a race motor for the circle track did we degree the cam? hell f*ck yes.

/thread

thats mainly what we build. check the link in my sig
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Old May 8, 2008 | 11:46 AM
  #18  
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Default RE: degreeing camshaft?

Same here, I build circle track and road race motors. All the blocks fresh from ford racing so thats why i only check 3 cylinders, on a junkyard block check em all, if its a race block your reusing that has already been fully degreed and your just swappinga cam, i just find tdc, run up the tappets on #1 and if its good to go I do nothing else.

Old May 8, 2008 | 12:03 PM
  #19  
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quesey
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Default RE: degreeing camshaft?

ORIGINAL: quesey

if its a stock rebuild or just a little cam justput it straight up would be easiest
as i said before ^ but i'd like to ask a question to some as to how your going to degree to cam without moving it to advance or retard? lol just wondering maybe i'm misunder standing them and there way of thinkin maybe i,vebeen doing it wrong for the past 27 years
Old May 8, 2008 | 12:08 PM
  #20  
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RGMotorsports
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Default RE: degreeing camshaft?

degreeing is just checking to make sure the camshaft is what the cam manufacturer says it is, you then take what you have observed by degreeing it to make the decision how much to advance or retard if it needs it. In racing sometimes we will retard the cam or advance it even if it degrees perfectly because doing this can give you a little more top end or bottom end, but most of the time a cam will check out and you just leave it straight up. Degreeing is just assuring what you have nothing else but taking measurements.



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