anybody run crane cam

STFU? Not a chance, sweet pea. I suggest if you don't like what you see being typed, best not read it.
O2Reaper wants to know the specs of the Crane cam that you claim to be aggressive. So do I. You did say:
Personally, I try to avoid commenting about things I don't know anything about.
FYI, it's a custom ground Cam Motion cam. Providing you the cam specs would be pointless in this discussion.
FYI, it's a custom ground Cam Motion cam. Providing you the cam specs would be pointless in this discussion.
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02Reaper: If you can understand what you're looking at, you'll find that they prove you wrong.
For "The Bobbsey Twins," nuzee and blkZ28spt: You can educate yourselves by checking the same page. You'll see that, again as I already stated, the Crane cams may not be the "most aggressive," but they are far from lazy. Regarding calling Crane, you fellas can do your own homework. After all, I'm not the one that made false claims concerning the ramp rates of Crane cams.
http://www.cranecams.com/?show=newPr...a2b639a20717be

The difficulty with your suggestion is brought up by SportSide 5.3. Crane has always used .004" for their advertised numbers so it's very hard to make direct comparisons between theirs and say Comp cams which use .006" advertised numbers. This is why the .050" numbers exist for comparison purposes.
The original poster called the company and was told the lobes were soft. You don't think that's enough to go on? And I was only answering a soft vs hard lob question, I never said they had soft lobes.
Seriously, what's your problem?BTW: You implied that you knew the cam's .050" duration andvadvertised duration numbers. We have yet to see you post anything about it though.........

The difficulty with your suggestion is brought up by SportSide 5.3. Crane has always used .004" for their advertised numbers so it's very hard to make direct comparisons between theirs and say Comp cams which use .006" advertised numbers. This is why the .050" numbers exist for comparison purposes.
The original poster called the company and was told the lobes were soft. You don't think that's enough to go on? And I was only answering a soft vs hard lob question, I never said they had soft lobes.
Seriously, what's your problem?BTW: You implied that you knew the cam's .050" duration andvadvertised duration numbers. We have yet to see you post anything about it though.........
2. The duration numbers can be seen by simply following the link I provided in my post previous to this one. Did you really have to ask about them again? Unless you need to be spoon-fed, the link should be sufficient.
Last edited by XTrooper; May 23, 2005 at 04:49 AM.
It's obvious that Crane doesn't use the .004" numbers as some kind of marketing trick because it actually makes their cams look less aggressive than they really are when compared to cams using the .006" numbers. It's simply a case where they've been using .004" as their point of reference since "Day 1" and I doubt they're going to change things now after decades of doing it this way.
Let's put all of the previous posts aside and get down to topic. I wanted to see the supporting information that makes you claim Crane cams to be aggressive. I had wondered if Crane had something going on above .050" lift. I was thinking maybe the duration measurements between 0.050 to 0.20" might indicate what's going on. The info presented so far cannot confirm or dispell my suspicions.
So based on Harvey Crane's lobe intensity formula where:
lobe intensity=advertised duration-duration at 0.050
Crane's lobe intensity=62
CompCam's XE=53
CompCam's XER=49
Anyone know what the other cams are? including the factory cam? Also, can you post (if you know) the lift at which the advertised duration was measured.
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With old flat tappet cams, I vaguely remember a rule of thumb where they wouldn't design cams greater than a 47(???) intensity because it would start to compromise valvetrain reliability beyond that point. Some of you guys out there might remember it better than I. Anyway, does a similar rule of thumb exist for roller cams? For LS1 cams?? I'd like to know this too.
Let's put all of the previous posts aside and get down to topic. I wanted to see the supporting information that makes you claim Crane cams to be aggressive. I had wondered if Crane had something going on above .050" lift. I was thinking maybe the duration measurements between 0.050 to 0.20" might indicate what's going on. The info presented so far cannot confirm or dispell my suspicions.
So based on Harvey Crane's lobe intensity formula where:
lobe intensity=advertised duration-duration at 0.050
Crane's lobe intensity=62
CompCam's XE=53
CompCam's XER=49
Anyone know what the other cams are? including the factory cam? Also, can you post (if you know) the lift at which the advertised duration was measured.
*********************
With old flat tappet cams, I vaguely remember a rule of thumb where they wouldn't design cams greater than a 47(???) intensity because it would start to compromise valvetrain reliability beyond that point. Some of you guys out there might remember it better than I. Anyway, does a similar rule of thumb exist for roller cams? For LS1 cams?? I'd like to know this too.
You bring up some interesting questions which I'm sorry to say that, at this point, I have no answers for.
I might make one comment regarding the lobe intensity numbers you have listed. As I previously commented above, when making comparisons of cams that use different valve lift points of reference (.004" vs. .006"), you get a skewed view of things. The Crane cam, because its advertised duration is measured at .004", will naturally appear to be less aggressive than a similar cam whose advertised duration is measured at .006". I suspect that, like the Cam Motion cams, the Crane lobes fall somewhere between the Comp XE and XE-R in aggressiveness even though they appear to trail them both in your list.
Several tuners, Vinci being the foremost, have had some very impressive results with them.

