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61" and 74" cams

Started by 4DWUDS, March 15, 2010, 06:36:12 PM

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4DWUDS

March 15, 2010, 06:36:12 PM Last Edit: March 15, 2010, 06:43:53 PM by 4DWUDS
Any difference in the 2. Saw a cam advertised on E-Bay as for a 61" Pan. I didn't know there was a difference. :scratch: And I should prolly ask, What is the Difference ? if any.
To Err is human, To Forgive Divine. Neither of which is Marine Corps Policy.

Pynzo

March 16, 2010, 02:59:44 AM #1 Last Edit: March 16, 2010, 03:02:54 AM by Pynzo
The "61" cam was for the "E" motors built between '48 to '52. It was also used in 74 in. "Traffic Combo" Police models through '56 (If I remember correctly ). It had a lesser aggressive profile and duration than the '74 in.  "F" and "FLH" cams making the motor more suitable for low speed traffic crawling.

4DWUDS

March 16, 2010, 08:07:11 AM #2
And if I picked up one from a pile of cams, How would I know it was a 61" cam. Any marks or stampings to make it easy to spot.
To Err is human, To Forgive Divine. Neither of which is Marine Corps Policy.

Pynzo

March 16, 2010, 11:44:16 AM #3
They have 61 stamped into it. The F cams are blank,  and FLH cams have an H stamped into them. Anybody, please correct me if I'm mistaken, I'm miles away from my Palmer's and excercising my memory.

4DWUDS

March 16, 2010, 08:27:06 PM #4
And I am assuming the 61 is stamped on the back side of the cam lobe similar to the H cams.
To Err is human, To Forgive Divine. Neither of which is Marine Corps Policy.

Pynzo

March 17, 2010, 09:07:11 AM #5
That is correct.
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