trying to degree my cam

[Cartel]

I am degreeing my cam. it says 106 Intake Centerline mine is showing around 107.5
should I advance it the 4 degrees?
I'm just gonna go out and double check it.

thanks

 

[Cartel]

OK this melling 40407 chain has a triangle that says advanced 4 degrees. I put it on the triangle and lined it up dot to the proper triangle and checked the degrees and its in outer space, like 100 degrees. I was expecting around 104....

 

[4spdragtop]

No help but willing to watch n learn.

 

[mopowers]

What is the WHOLE engine combo. Lots of details are missing. You're much more likely to get input if you lay out everything. Keep in mind that the cam will retard as the chain wears in and stretches.

 

[Cartel]

What is the WHOLE engine combo. Lots of details are missing. You're much more likely to get input if you lay out everything. Keep in mind that the cam will retard as the chain wears in and stretches.

383 new build CL21-224-4 cam
supposed to be 106 intake centerline

https://www.compcams.com/xtreme-energy-230-236-hydraulic-flat-cam-for-chrysler-383-440.html

I get 108 with the timing chain straight up.
I switched to the triangle and it was coming out as 100 degrees.
melling says its 4 degrees each slot, seems more like 8

After I chaged it to the triangle, I found tdc again and checked at 50+ and 50- and was getting 144 + 56
At straight up I was getting 152 + 64
am I missing something?

Should I have left the sprocket on O and just align the cam gear dot to the triangle?
that seems to make sense.
It sucks melling doesnt have manuals online that are easy to find

 

[1969383S]

+Good JMO!

 

[Cartel]

 

[Bewy]

The butt meter will never feel the difference of 2* & only if that exact combination has been on a dyno would there be any measurable difference to be seen.

 

[MOPARMAGA]

383 new build CL21-224-4 cam
supposed to be 106 intake centerline

http://[URL][URL]https://www.compca...-hydraulic-flat-cam-for-chrysler-383-440.html

[/URL][/URL]

I get 108 with the timing chain straight up.
I switched to the triangle and it was coming out as 100 degrees.
melling says its 4 degrees each slot, seems more like 8

After I chaged it to the triangle, I found tdc again and checked at 50+ and 50- and was getting 144 + 56
At straight up I was getting 152 + 64
am I missing something?

Should I have left the sprocket on O and just align the cam gear dot to the triangle?
that seems to make sense.
It sucks melling doesnt have manuals online that are easy to find

Pretty sure the cam is ground with 4° advance already, so advancing it 4° more would put it 8° advanced.
Install it straight up... Dot to dot and check it again.

 

[PRH]

My experience is that the adjustments on most “3-way” timing sets advance/retard the cam 4 degrees…….at the cam.
Or……..8* at the crank.
Useless in most cases.

When you want a usable amount of adjustability…….spend the extra for the 9-way set, where the adjustments are in crankshaft degrees.

At this point, if you really want 106, your options are to get a different timing set, or buy the offset bushing kit and drill the top gear……..like what everyone did before the 9-way sets existed.

 

[TT5.9mag]

Make more accurate measurements, I like a very fine pointer on the degree wheel and use a piston stop to find TDC. Once your measurement techniques are accurate and repeatable then you’ll get repeatable results. If my cam came in 1-1/2 degrees off on a street car I wouldn’t go through the effort to move it if I didn’t already have the 9 way timing set. You’ll never notice or be able to quantify 1-1/2 degrees at the cam on anything but the highest level stuff.

 

[middleagecrisis]

Like TT5.9 mag said above, one and a half° isn’t enough to mess with, you’ll never know the difference. It’s also really easy to get your math off by just a little bit. I second for installing it straight up and going with it if your math is correct.

 

[rumblefish360]

I am degreeing my cam. it says 106 Intake Centerline mine is showing around 107.5
should I advance it the 4 degrees?
I'm just gonna go out and double check it.

thanks

Hyd cam? Use a solid lifter on top instead for a steady reading and use light weight/pressure springs with an adjustable pushrod for length corrections.

If it dialed in at 107.5, you can use an off set cam key to help correct. You will not notice a 1* off set. Probably not even a 1.5* off set, but try anyway.

Installing the cam as intended delivers the performance designed into the cam and as you should expect. If your moving it around you should look at a different cam.

 

[Demonx2]

This is where you can get creative. I think a BBM cam gear has 50 teeth? If so, that's 7.2 deg/tooth. So you can play the games of moving the chain 1 tooth in either direction in combination with using the different key slots. I've done that many times to get it "where I want it." You clearly know how to degree the cam so go experiment and see what you can come up with. You can do this!

 

[Killer6]

This is where you can get creative. I think a BBM cam gear has 50 teeth? If so, that's 7.2 deg/tooth. So you can play the games of moving the chain 1 tooth in either direction in combination with using the different key slots. I've done that many times to get it "where I want it." You clearly know how to degree the cam so go experiment and see what you can come up with. You can do this!

Even if You were to advance the cam sprocket 1 tooth, that's 14.4° at the crank, then use the 4° retard position (8°@ the crank), that's still 6.4° advanced from the initial reading of 107.5-108°.....101.1-101.6° advanced.

 

[67Dart273]

This is where you can get creative. I think a BBM cam gear has 50 teeth? If so, that's 7.2 deg/tooth. So you can play the games of moving the chain 1 tooth in either direction in combination with using the different key slots. I've done that many times to get it "where I want it." You clearly know how to degree the cam so go experiment and see what you can come up with. You can do this!

Must admit this has never occurred to me

 

[crackedback]

This is where you can get creative. I think a BBM cam gear has 50 teeth? If so, that's 7.2 deg/tooth. So you can play the games of moving the chain 1 tooth in either direction in combination with using the different key slots. I've done that many times to get it "where I want it." You clearly know how to degree the cam so go experiment and see what you can come up with. You can do this!

Help yourself out too with marking the cam, crank gears with a fresh set of marks

 

[Demonx2]

Even if You were to advance the cam sprocket 1 tooth, that's 14.4° at the crank, then use the 4° retard position (8°@ the crank), that's still 6.4° advanced from the initial reading of 107.5-108°.....101.1-101.6° advanced.

You just have to be creative with a combo of which keyway to use, how many teeth to skip, and even offset keys. In the end, it is just math games to get it where you want it. Every engine may need something different...after all, that's why we degree the cam in the first place!!

 

[Killer6]

You just have to be creative with a combo of which keyway to use, how many teeth to skip, and even offset keys. In the end, it is just math games to get it where you want it. Every engine may need something different...after all, that's why we degree the cam in the first place!!

I'm talking about what the OP is working with, and His choices are the three numbers above, 107.5-108, 100, & 101.1-101.6. Offset keys, sure where available, who's making offset crank keys? I just grabbed leftover parts from the 383 I ran 35yrs ago, a quality link belt timing set, but like many has a slot at the cam pin. I had to widen it to accept the eccentric bushings to set mine back then, & did, but today I'd never be F'n w/that. Some things are worth paying for, & a good timing set, with useful offsets &/or adjustments are one of those things.