Cam Tech

[outsider347]

Originally Posted by Bored&Stroked

It is important to note, that just knowing the lift, duration at .050, LSA, intake centerline and timing events are important, but there is a lot more going on in any particular design/profile to understand how one cam compares to another.

Unless you have a full graph of the profile(s), and understand a lot of the details it is difficult to compare them (other than at a really high level). Two cams with the same basic "numbers" can perform very differently . . . based on their profiles, ramps, lifter designs, jerk, etc..

Here is a little PDF from Dema that may help folks get into the details just a bit more . . .

http://www.engineprofessional.com/ar...Q215_62-66.pdf

Enjoy!

Tks

[38 coupe]

If you want more reading on camshafts these folks have a four article series you can read through: http://www.profblairandassociates.com/RET_Articles.html


Shortcuts to each article:
1 - The Right Lift
2 - Making the Cam
3 - Bucket Operation
4 - Pushrod Operation

[21stud]

Great thread, good reading! thanks!

[Ol' Ron]

very interesting article. Gona take awhile for me to read all this. Digesting it is another problem.
G

[JWL]

With the comments about Tunnel Rams I was inspired to uncover and photograph one of the manifolds I fabricated about 15 years ago. I did not use this in competition but a similar one was on the Bonneville car when we set some records. This one was a little better than the other but there is never enough time to do everything you dream about.

I have asked Coopman to help with picture posting to which he kindly agreed and I say a big THANK YOU!

[V8COOPMAN]

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Originally Posted by JWL

With the comments about Tunnel Rams I was inspired to uncover and photograph one of the manifolds I fabricated about 15 years ago. I did not use this in competition but a similar one was on the Bonneville car when we set some records. This one was a little better than the other but there is never enough time to do everything you dream about.

I have asked Coopman to help with picture posting to which he kindly agreed and I say a big THANK YOU!

This is the manifold that John (JWL) fabricated several years back. Talented dude, yes? DD