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Had cam doctored, need help deciphering printout

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Old Apr 1, 2008 | 03:10 PM
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Default Had cam doctored, need help deciphering printout

Had my cam doctored and got it back today with a printout with a hell of a lot more info than I really needed, lol. Curious if someone could help me figure out exactly what I have.
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Old Apr 1, 2008 | 03:16 PM
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Post a scan of the report.
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Old Apr 1, 2008 | 04:00 PM
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Here ya go.
Attached Thumbnails Had cam doctored, need help deciphering printout-camdr.jpg  
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Old Apr 1, 2008 | 04:12 PM
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248/247 .593 lift ~111LSA
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Old Apr 1, 2008 | 04:15 PM
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Would it be safe to say it is NOT a T-rex, which it was claimed to be when I purchased it. T-rex specs are 242/248 - .608/.612 - 110 lsa

I know each individual cam differs a little in it's exact specs, not sure what that margin is though.
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Old Apr 1, 2008 | 04:18 PM
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cams are not always perfect, they may be a little larger or a little smaller than advertised based on what COMP, CRANE, ETC claim as acceptable through there QC process.
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Old Apr 1, 2008 | 04:55 PM
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Originally Posted by .ALEX.
248/247 .593 lift ~111LSA
+1

who'd you buy it from?
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Old Apr 1, 2008 | 05:00 PM
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A member on here. Not gonna run his name through the mud because once I expressed my concerns about it, thus me getting it doctored, he was more than willing to refund my money if it ended up not being a T-rex. He was 100% positive it was though, so not sure what the deal is.
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Old Apr 1, 2008 | 05:56 PM
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there should be numbers scribed into the front of the cam, post a picture or what they are and we can tell you what lobes they are suppose to be.

it could very well be a t-rex and it falls with in the QC tolerances.
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Old Apr 1, 2008 | 06:39 PM
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Has 251031 stamped on one end and 0118061 etched on the other
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Old Apr 1, 2008 | 07:17 PM
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no individual nubers like 1235HR 1356TK 110LSA????

Does anyone know if thunder uses Comp/crane/cam motion?

You can always call thunder to see if they can help you out.
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Old Apr 1, 2008 | 07:27 PM
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The lobes don't match any of the Comp or Crane profiles. Interesting to find out what this is.
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Old Apr 1, 2008 | 07:39 PM
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Originally Posted by .ALEX.
248/247 .593 lift ~111LSA
Originally Posted by slmdLS1
Originally Posted by .ALEX.
248/247 .593 lift ~111LSA
+ 1
If the Intake Lobe Centerline is 109 and the Exhaust Lobe Centerline is 111, isn't this cam ground on 110 LSA with one degree of advance? I know, I know it's one degree.

IMO, 6 degrees larger than the advertised intake lobe, while falling .015n-.020 short on lift doesn't seem like the same cam.
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Old Jul 6, 2012 | 12:06 AM
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That is a wild split...I would say solid roller but the lift isn't high enough
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Old Jul 6, 2012 | 06:18 AM
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This guy trading me this same cam dam this is a old post how do u think this cam will work in 346
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Old Jul 6, 2012 | 08:15 AM
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Originally Posted by bigantws6
This guy trading me this same cam dam this is a old post how do u think this cam will work in 346

Great at WOT. It will be hard to live with on the street even with a tune.
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Old Jul 6, 2012 | 08:22 AM
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Y is that
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Old Jul 6, 2012 | 08:23 AM
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248/247 .593/.593 110.4+1 LSA

without a good head on the car i wouldn't run it and expect to see 7krpm

in a stock cube ls1 id expect a 1000rpm idle with not so hot street manners under 1600-1800 or so even with a good tune i just tuned a 249/253 112lsa in a 403lsx and it idles 1000 and is choppy under 1500 or so....ur in his range but 50+cubes short so your gonna know that cam is in there........may even want to rev beyond what a stock shortblock can handle
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Old Jul 6, 2012 | 08:28 AM
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Originally Posted by bigantws6
Y is that
Because it has so much duration and overlap the motor will not pull much vacuum. At low RPM idle it will buck and surge and try to stall.
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Old Jul 6, 2012 | 08:42 AM
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I have Cnc ported heads and I beam rods but running stock crank will I be alright reving it to 6500 so if tuned at idle around 1000 will it be okay or will it still surge
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