Cam and valvetrain longevity....??? low duration high lift...
10-02-2016 | 08:03 PM
#991
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Joined: Feb 2009
Posts: 8,356
Likes: 1,515
From: NW Michigan
Its funny. I have Comp, Lunati, Howards, Crane, Erson, Crower, catalogs here. Literally hundreds of cams for hyd roller bbc chevy engines, fitting everything from a towing 454, to a drag strip 598.
Then the need for a "custom cam" comes up. Problem is, all these cams that come from MK, appear to be almost a once size fits all! A 548ci gets fairly close to the same cam, as a 496/502! Almost all the same LSA, almost all the same ICL, durations within a few degrees, lift within a certain range, etc.
A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol
Then the need for a "custom cam" comes up. Problem is, all these cams that come from MK, appear to be almost a once size fits all! A 548ci gets fairly close to the same cam, as a 496/502! Almost all the same LSA, almost all the same ICL, durations within a few degrees, lift within a certain range, etc.
A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol
Bob should go into selling Kirby vacuum cleaners. I am really disappointed and feel bad for the many who have fallen into the Bob trap. Has bob addressed any of these known issues? Can't wait to see thread MT is going to start. I think it's wise also MT is keeping names out of it for many reasons unless they don't care. I think the list will grow. Some not only got screwed but also got their pride fked with bad.
10-02-2016 | 08:23 PM
#993
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Joined: Oct 2005
Posts: 11,688
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From: Olmsted Falls,Ohio Marblehead,Oh
it all started to unfold when I was having my issues, early in my build process you, Joe and I were still Pro Bob.... right after I got all my parts is when things started to get off... I remember asking opinion on Scorpions you had at the time, was happy still lol
,,i'll empty it again.
10-02-2016 | 09:06 PM
#995
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Posts: 11,332
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From: chicago
100 pages. Good Lord.
10-02-2016 | 09:08 PM
#996
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Joined: Nov 2004
Posts: 14,094
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From: On A Dirt Floor
10-02-2016 | 09:12 PM
#997
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Joined: May 2009
Posts: 3,895
Likes: 124
From: Chicago, IL; Onekama, MI
A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol
10-02-2016 | 09:38 PM
#999
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Joined: Mar 2008
Posts: 3,613
Likes: 375
From: Traverse City MI
Just imagine all the unhappy customers who are scared to post, don't like drama, or are not even member here!
10-02-2016 | 09:51 PM
#1000
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Joined: Oct 2013
Posts: 1,953
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From: rock Island wa
its fall, isn't everyone supposed to be fighting?
