Cam and valvetrain longevity....??? low duration high lift...
10-03-2016 | 06:07 PM
#1063
Charter Member #601
Joined: Dec 2000
Posts: 3,276
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From: Holland, Mi USA.
Interesting read! I have one of bobo's cams with 20hrs on it and 5 bad lobes, or was it 4.. The only reason I only have one cam of his, is because I sent the next one, that I did not order, back to him. He has hated me ever since for making him eat $350. That was in 2008. The block I ruined with that cam sits in the corner waiting for a rebuild. Too much metal in the skirts and scars on the walls to just reassemble. My loss was a motor worth 100 times more than his loss!
Some day I would like to put a big crank in it and slide it under a old Chevy cab over.. Maybe..
Hopefully others will not drink the bobo Kool aid and learn from other people's stories.
Dick
Some day I would like to put a big crank in it and slide it under a old Chevy cab over.. Maybe..
Hopefully others will not drink the bobo Kool aid and learn from other people's stories.
Dick
10-03-2016 | 06:11 PM
#1064
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Joined: Aug 2010
Posts: 2,227
Likes: 547
From: Cape Coral FL
Just to be fair though, it was with some Edelbrock marine heads and a Mag MPI manifold that had the runners cut down, ported and extrude honed with a bigger throttle body. Not the best combo for making power, but 567 hp is still a little light I think
10-03-2016 | 06:44 PM
#1065
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Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
So far we have learned
Some of these cores quality suck?
Some of these cams are beating parts up?
Most of these "custom" cams, aren't very custom at all. I mean, a 9:1 540 with GM iron heads, gets the same cam pretty much as a 540 with AFR 325s and 10:1 , or a 555ci , or within a few degrees of a 502ci combo
The timing sets provided, don't fit well without modifications
Some cams didn't have the proper firing order as ordered, or as cam card stated
Some cams have been removed, replaced with an off the shelf cam, and made more power , with less lift , and no longer having issues
Some have had quality control issues with his AFR heads
Some of these cores quality suck?
Some of these cams are beating parts up?
Most of these "custom" cams, aren't very custom at all. I mean, a 9:1 540 with GM iron heads, gets the same cam pretty much as a 540 with AFR 325s and 10:1 , or a 555ci , or within a few degrees of a 502ci combo
The timing sets provided, don't fit well without modifications
Some cams didn't have the proper firing order as ordered, or as cam card stated
Some cams have been removed, replaced with an off the shelf cam, and made more power , with less lift , and no longer having issues
Some have had quality control issues with his AFR heads
10-03-2016 | 06:57 PM
#1066
Thread Starter
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Joined: Oct 2005
Posts: 11,688
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From: Olmsted Falls,Ohio Marblehead,Oh
10-03-2016 | 08:56 PM
#1067
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Joined: Sep 2007
Posts: 120
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From: Clarks Summit, Pa.
Is there anyone out there that bought a set of MK cams and ended up with stout running motors that made good power??
10-03-2016 | 09:07 PM
#1068
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Joined: Feb 2009
Posts: 8,356
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From: NW Michigan
Maybe this will abruptly end the thread. Lol. Power and hours of use is more like it.
10-03-2016 | 09:16 PM
#1069
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Joined: Jul 2004
Posts: 11,332
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From: chicago
Anyone have any issues with the Scorpion rocker arms?
10-03-2016 | 10:11 PM
#1070
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Joined: Oct 2007
Posts: 8,439
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From: yorkville,il
mike tkach said:
09-15-2016 07:52 PM(Quote)
and their are still some people that think you can spin a hyd roller cam to 6000+rpm with 140 on the seat&under450 on the nose,then they blame the cam or the lifter when things get beat to failure.
MIKE TKACH (Quote)
Been there w a camaro. You can do a 6-700 lift solid lifter cam and run 6500 in a basically stock motor. But hydraulic floats around 4500. I know you know this
09-15-2016 07:52 PM(Quote)
and their are still some people that think you can spin a hyd roller cam to 6000+rpm with 140 on the seat&under450 on the nose,then they blame the cam or the lifter when things get beat to failure.
MIKE TKACH (Quote)
Been there w a camaro. You can do a 6-700 lift solid lifter cam and run 6500 in a basically stock motor. But hydraulic floats around 4500. I know you know this
