Cam spec research

Engine tech, for those engines, products, and technologies of yesteryear.

Moderator: Team

Post Reply
Aaron1966
New Member
New Member
Posts: 2
Joined: Tue Jan 26, 2021 6:43 pm
Location: Maryland

Cam spec research

Post by Aaron1966 »

I have a 119566SM 01L2B camshaft out of a 406 sbc. No cam card and I want to degree it when it is installed in another 406 I’m building. My first engine build. Etched numbers on front of cam are 289 300 R5 KO132 45-46. Anyone have an idea of what this may be?
Geoff2
Guru
Guru
Posts: 1980
Joined: Mon Nov 09, 2015 4:36 pm
Location: Australia

Re: Cam spec research

Post by Geoff2 »

My guess: Adv duration is 289 int, 300 exh; 105 LSA.
User avatar
CamKing
Guru
Guru
Posts: 10709
Joined: Wed Aug 08, 2007 4:05 pm
Location: Denver, NC
Contact:

Re: Cam spec research

Post by CamKing »

Aaron1966 wrote: Tue Jan 26, 2021 6:51 pm I have a 119566SM 01L2B
That's the part# of the cam core, and when it was made.
The cam core was made by Crane, and was roughed in with a .400" lobe lift, a 106 LSA, and a .985" Base Circle.

I believe the other numbers are the grind numbers, and it looks like an old UltraDyne.
289/300 @.020"
256/267 @.050"
179/187 @.200"
.425"/.425" Lobe Lift
105 LSA
Mike Jones
Jones Cam Designs

Denver, NC
jonescams@bellsouth.net
http://www.jonescams.com
Jones Cam Designs' HotPass Vendors Forum: viewforum.php?f=44
(704)489-2449
David Redszus
Guru
Guru
Posts: 9633
Joined: Tue Nov 27, 2007 9:27 am
Location: Chicago
Contact:

Re: Cam spec research

Post by David Redszus »

Mike,
Could you please share the technique of accurate cam lobe measurement?

Is there a different method used for a flat tappet vs roller follower?

How does one determine valve lift curves from cam lift data?

How accurate, in lift and angle, does cam measurement have to be?

Do different cam manufacturers use different methods of measurement?
Aaron1966
New Member
New Member
Posts: 2
Joined: Tue Jan 26, 2021 6:43 pm
Location: Maryland

Re: Cam spec research

Post by Aaron1966 »

Thanks Mike Jones
Post Reply