Norris 440SC cam info needed.

  • Dr. Gamma
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16 Jul 2014 22:13 #640337 by Dr. Gamma
Norris 440SC cam info needed. was created by Dr. Gamma
Been going through my collection of parts from my two disassembled KZ1000 Superbike motors trying to see what I can come up with as far as a nice streetable motor. I have two nice cylinder heads to choose from.

What I need to know do the Norris 440SC cams have the same base circle as stock cams??? If so I will be able to run my Yoshimura Super Bonneville cams in the head that was set up to run the 440SC cams. I think the Yosh cams would make a nicer street setup than a motor with the 440SC cams. I found the lift and duration specs for the 440SC cams, but nothing on the base circle so far.
1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.

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16 Jul 2014 23:34 - 16 Jul 2014 23:36 #640343 by bluezbike
Replied by bluezbike on topic Norris 440SC cam info needed.
Dr.G.....I have a set of Norris 440 cams which I just measured and unfortunately :( the base circle is smaller than stock. The measured out to 27.4 mm. or 1.080"
79 KZ 1000 LTD
77 KZ 1000 B1 LTD (awaiting electrical resurrection)
Last edit: 16 Jul 2014 23:36 by bluezbike. Reason: spelling
The following user(s) said Thank You: Dr. Gamma

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17 Jul 2014 05:00 #640351 by LarryC
Replied by LarryC on topic Norris 440SC cam info needed.
The smart move is to measure the cams you have in your hand. Specific grind numbers do not always mean the base circle of that particular grind will be the same for every one ground. People do order custom base circles.
Larry C.
The following user(s) said Thank You: bluezbike, Dr. Gamma

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