Re: Cam Dynamics 7000 Plus cam help
[Re: ProStock1320]
#452969
08/29/09 12:40 AM
08/29/09 12:40 AM
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Joined: Apr 2006
Posts: 4,220 West Plains, MO
DrCharles
master
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master
Joined: Apr 2006
Posts: 4,220
West Plains, MO
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Remember the cam turns at half crank speed. The only reason for these cams is to meet stock lift specs while cramming in the maximum possible duration. They have almost square lobes that just slam the valves open and closed so are very hard on valvetrain parts... A few years ago, one of the car mags (think it was Hot Rod but not sure) had one lying around and wanted to try it... wish I'd saved the article. Anyway they said it would not idle under 1800 rpm and made basically no vacuum, because both valves are open most of the time, but it would rev really high.
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Re: Cam Dynamics 7000 Plus cam help
[Re: Moparteacher]
#452976
08/30/09 12:00 AM
08/30/09 12:00 AM
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Joined: Jan 2003
Posts: 3,504 DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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The .006" spec is an SAE spec, usually called the "advertised duration". I have one for a 340 that's never been used. I never measured it but the lobe has a flat nose on it. It looks like the lobes are designed to cause the valvetrain to fly off the end getting more lift and land on the other side of the ramp.
Floyd Lippencott IV
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Re: Cam Dynamics 7000 Plus cam help
[Re: sixpackbee]
#452978
08/30/09 05:21 PM
08/30/09 05:21 PM
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Joined: Aug 2007
Posts: 316 Ohio
Lil Wedge
enthusiast
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enthusiast
Joined: Aug 2007
Posts: 316
Ohio
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I ran this cam in a 440 six pack back in the early 80's ,stock cast pistons, stock 906 heads, ran Direct Connection springs,retainers, 1.86 installed height, 100 lbs closed and 300 lbs open with stock rockers which were more like 1.42 which kept it closer to legal lift. Ran it 2 seasons, ran 11.80's 3600 lb Super Bee, Stuck it in a tubbed out 3000 lb. Duster,same trans and converter, only TM7 and 750 Holley and went 11.00 in good air,11.30's in the heat, bracket raced it for a couple years. Great Cam. Piston to valve clearance is critical. I know a couple guys who unintentually put their own valve reliefs in their pistons
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