Board index Flathead Power-Technical Questions, Answers, and Suggestions Knuckles what cam do I have

what cam do I have

Moderators: Curt!, Pa

Post Tue Apr 28, 2009 11:58 am

Posts: 8
I'm doing the lower end on my 47 EL and am curious what cam I have. The only markings are on the face of the gear. At 12:00 is the letter F and at 6:30 is the number 1. Is this a stock cam. If not who made it and what can I expect from it. Bought it in boxes so I"ve never heard it run. Thanks

Post Wed Jun 17, 2009 6:39 pm

Posts: 8
I tried to post a picture but can't figure out how to do it, any help. CC

Post Wed Jun 17, 2009 8:30 pm
Pa Site Admin

Posts: 5541
Location: Ohio USA

Email it to me direct bro. I will put it up for you. Pa

Post Wed Jun 17, 2009 10:05 pm

Posts: 2676
Location: Los Angeles, CA
Post your photos at Be sure to upload the in LARGE size. Just click the LARGE box. Then post the link that photobucket gives you here. WALLAH!!! photos appear here

Post Thu Jun 18, 2009 10:18 am

1. what's the lobe height?
2. is the base circle undercut?

Post Thu Jun 25, 2009 4:01 pm

Posts: 8
ImageImageImage I thinl I have this picture thing down. CC

Post Thu Jun 25, 2009 5:05 pm

I suspect, from the base circle diameter, that this was reground.

Post Fri Jun 26, 2009 7:11 am

Posts: 8
I measured the lobe from the highest point to the base at 1.22. CC

Post Fri Jun 26, 2009 7:54 am

Yup - reground. Palmer cites the original 1936-47 lobe as 1.22" tall + reduced base circle = undercut for duration increase.

Summary: you won't know what it it unless you time it with a degree wheel and dial indicator.

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