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frank79912
 Post subject: Question on cam specs
PostPosted: Wed Aug 18, 2021 3:04 pm 
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TBI Slant 6

Joined: Mon Apr 25, 2011 5:48 pm
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Location: Alaogordo NM
Car Model: 1983 d150 a833 vin m
Stupid question- Had a cam given to me and the specs do not seem right. duration 266- 210@.050 ,exhaust 264 -208@0.050, Lobe separation is 108 and center lines are 104 intake 112 exhaust . .440 lift on intake and .425 on exhaust Here is were I get lost . valve events intake 1 btdc open 29 abdc closed ---exhaust 36 bbdc -8 atdc measured @ .050 ... -7 degrees overlap measured at .050 of tappet rise ??? Just doesn't seem right to me . What's the consensus .

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Doctor Dodge
PostPosted: Wed Aug 18, 2021 6:28 pm 
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Joined: Sat Oct 12, 2002 11:22 am
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Location: Sonoma, Calif.
Car Model: Many Darts and a Dacuda
You may want to check it again at .010 and .020 lifts (near lash) to see if those numbers make more sense.
DD
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frank79912
PostPosted: Thu Aug 19, 2021 6:52 am 
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Joined: Mon Apr 25, 2011 5:48 pm
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Location: Alaogordo NM
Car Model: 1983 d150 a833 vin m
Its a hydraulic cam .

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Doctor Dodge
PostPosted: Thu Aug 19, 2021 7:58 am 
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What is your checking method? Directly off the cam using a solid lifter or ??
DD
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frank79912
PostPosted: Fri Aug 20, 2021 12:41 pm 
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Joined: Mon Apr 25, 2011 5:48 pm
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Location: Alaogordo NM
Car Model: 1983 d150 a833 vin m
Yes- I put together 3 lifters to bring it up to make it easier for the dial indicator. From what I found out ,its only slightly different then a stock replacement solid lifter cam from any of the suppliers with a little less overlap.

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DadTruck
PostPosted: Fri Aug 20, 2021 12:56 pm 
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Joined: Wed Sep 17, 2008 6:48 pm
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does the cam have a manufacture name and number?

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frank79912
PostPosted: Sun Aug 22, 2021 1:18 pm 
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Joined: Mon Apr 25, 2011 5:48 pm
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Location: Alaogordo NM
Car Model: 1983 d150 a833 vin m
I have nothing on it. It looks like a regrind from what I can tell

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