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Old 09-28-2007, 08:43 AM   #1 (permalink)
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Leineweber cams

Ran accross some specs on these cams, and they seem kind of interesting. I had never heard of them before. Anyone ever use them with good results?
Just curious.
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Old 09-28-2007, 09:11 AM   #2 (permalink)
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Cams

Quote:
Originally Posted by bowtech40
Ran accross some specs on these cams, and they seem kind of interesting. I had never heard of them before. Anyone ever use them with good results?
Just curious.
They have been around a looooooooooooooong time.
Jim Lieneweber is a great guy, and his products have stood the test of time.
We still use his cams in certain applications.
Nothing, I mean nothing, sounds like a shovel with "Uncle Jim's" cams.
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Old 09-28-2007, 11:12 AM   #3 (permalink)
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I have been interested in Leinweber's cams since I first found their site about a year ago. He makes 2 cams for the TC but it took a phone call to him to get the TDC lift.

T35

.510 lift 17/102/41 and 51/110/11 238/242 LSA 106 .176/.138 at TDC


T55

.560 lift 24/98/40 and 56/112/12 244/248 LSA 105 .231/.145 at TDC

I thought the T55 sounded good to me - a moderate lift of .560 and duration with a short overlap of 36 degrees. But, I'm afraid of the TDC lift of .231. I've never seen a HD TC cam lift so fast (.178 inches in 24 degrees). That appears to be a lot of hydraulic squeeze or jerk and would seem to be rough on the drive train. King of Cubes just posted a few days ago about some cams jerking/yanking the valve train around and Leinweber cams were specifically mentioned. Has anybody had any first hand knowledge of either of these cams?

Frank
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Old 09-28-2007, 08:42 PM   #4 (permalink)
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I saw a t55 on the bench at a shop near here....wow...the lobes look almost square.
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Old 09-29-2007, 05:19 AM   #5 (permalink)
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Cams

We have quite a few, new-in-the-box Lieneweber shovel and evo cams on the shelf. An L-6 or L-7 shovel cam lobes are wider than the base circle. They come off the base at about a 5 degree angle wider at the lobe. Picture that.
He gets it off the seat instantly, holds it there as long as possible, then he closes it like turning off a light switch. And guys think that Bob Wood cams are aggressive. They have never heard/seen/or worked with Lieneweber grinds. I think that is funny.
We used these cams many years ago when we raced a shovel in ECRA and AHDRA, and the smaller ones in street builds. These taught us alot about proper spring rates,( most springs were junk then, as compared to now) strong pushrods, good/bad valve guides, how poor the stock heads were as to holding the seats in place, and power, prior to owning a dyno. Oh, I forgot to mention lifter roller axles. Had to educate ourselves as there were no forums or chat rooms, and other racers were so tight lipped that we were all on our own. It was all good. And Bob Wood cams are aggressive???????????? Ha.
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Old 09-29-2007, 07:36 AM   #6 (permalink)
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Do you know where Leinweber cams are now? Tried contacting them & no answer. Called around & was told he died & they moved the compant to the high desert somewhere. Don't know how true this is just trying to locate them.
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Old 09-29-2007, 07:43 AM   #7 (permalink)
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Rivera was a major distrubutor, have you tried asking them. I used to talk to old man Lieneweber years ago, the guy was great.
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Old 09-29-2007, 07:51 AM   #8 (permalink)
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I believe they can still be reached at www.LeineweberCamc.com 760-364-4432
If you use their cams, use their springs.
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Old 09-29-2007, 08:45 AM   #9 (permalink)
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http://www.leinewebercams.com/


Fixed it for ya.
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Old 09-29-2007, 08:53 AM   #10 (permalink)
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That worked. Thanks
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