Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Had cam doctored, need help deciphering printout

Thread Tools
 
Search this Thread
 
Old 04-01-2008, 03:10 PM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
Gregg 00SS's Avatar
 
Join Date: Dec 2001
Location: SE Florida
Posts: 543
Likes: 0
Received 0 Likes on 0 Posts

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.
Old 04-01-2008, 03:16 PM
  #2  
LS1Tech Premium Sponsor
iTrader: (5)
 
Sales2@Texas-speed's Avatar
 
Join Date: Jan 2008
Location: Texas!
Posts: 5,053
Likes: 0
Received 4 Likes on 4 Posts

Default

Post a scan of the report.
__________________


Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!

COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Old 04-01-2008, 04:00 PM
  #3  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
Gregg 00SS's Avatar
 
Join Date: Dec 2001
Location: SE Florida
Posts: 543
Likes: 0
Received 0 Likes on 0 Posts

Default

Here ya go.
Attached Thumbnails Had cam doctored, need help deciphering printout-camdr.jpg  
Old 04-01-2008, 04:12 PM
  #4  
LS1TECH Sponsor
iTrader: (13)
 
ALLBOTTLE's Avatar
 
Join Date: May 2007
Posts: 1,062
Likes: 0
Received 1 Like on 1 Post
Default

248/247 .593 lift ~111LSA
Old 04-01-2008, 04:15 PM
  #5  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
Gregg 00SS's Avatar
 
Join Date: Dec 2001
Location: SE Florida
Posts: 543
Likes: 0
Received 0 Likes on 0 Posts

Default

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.
Old 04-01-2008, 04:18 PM
  #6  
LS1TECH Sponsor
iTrader: (13)
 
ALLBOTTLE's Avatar
 
Join Date: May 2007
Posts: 1,062
Likes: 0
Received 1 Like on 1 Post
Default

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.
Old 04-01-2008, 04:55 PM
  #7  
TECH Resident
iTrader: (8)
 
slmdLS1's Avatar
 
Join Date: Apr 2003
Location: Tallahassee, Florida
Posts: 853
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by .ALEX.
248/247 .593 lift ~111LSA
+1

who'd you buy it from?
Old 04-01-2008, 05:00 PM
  #8  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
Gregg 00SS's Avatar
 
Join Date: Dec 2001
Location: SE Florida
Posts: 543
Likes: 0
Received 0 Likes on 0 Posts

Default

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.
Old 04-01-2008, 05:56 PM
  #9  
LS1TECH Sponsor
iTrader: (13)
 
ALLBOTTLE's Avatar
 
Join Date: May 2007
Posts: 1,062
Likes: 0
Received 1 Like on 1 Post
Default

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.
Old 04-01-2008, 06:39 PM
  #10  
TECH Enthusiast
Thread Starter
iTrader: (8)
 
Gregg 00SS's Avatar
 
Join Date: Dec 2001
Location: SE Florida
Posts: 543
Likes: 0
Received 0 Likes on 0 Posts

Default

Has 251031 stamped on one end and 0118061 etched on the other
Old 04-01-2008, 07:17 PM
  #11  
LS1TECH Sponsor
iTrader: (13)
 
ALLBOTTLE's Avatar
 
Join Date: May 2007
Posts: 1,062
Likes: 0
Received 1 Like on 1 Post
Default

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.
Old 04-01-2008, 07:27 PM
  #12  
TECH Addict
iTrader: (11)
 
405HP_Z06's Avatar
 
Join Date: Jun 2003
Location: Arlington, Tx
Posts: 2,215
Received 18 Likes on 14 Posts

Default

The lobes don't match any of the Comp or Crane profiles. Interesting to find out what this is.
Old 04-01-2008, 07:39 PM
  #13  
TECH Fanatic
iTrader: (1)
 
hammertime's Avatar
 
Join Date: Apr 2006
Location: Smithton, IL
Posts: 1,436
Likes: 0
Received 2 Likes on 2 Posts

Default

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.
Old 07-06-2012, 12:06 AM
  #14  
TECH Addict
iTrader: (15)
 
wildcamaro's Avatar
 
Join Date: Nov 2009
Location: Western PA
Posts: 2,501
Likes: 0
Received 3 Likes on 3 Posts

Default

That is a wild split...I would say solid roller but the lift isn't high enough
Old 07-06-2012, 06:18 AM
  #15  
TECH Apprentice
iTrader: (12)
 
bigantws6's Avatar
 
Join Date: May 2011
Location: dallas tx
Posts: 309
Likes: 0
Received 0 Likes on 0 Posts
Default

This guy trading me this same cam dam this is a old post how do u think this cam will work in 346
Old 07-06-2012, 08:15 AM
  #16  
TECH Enthusiast
 
Gunslinger09's Avatar
 
Join Date: Nov 2004
Location: Tampa FL
Posts: 714
Likes: 0
Received 0 Likes on 0 Posts
Default

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.
Old 07-06-2012, 08:22 AM
  #17  
TECH Apprentice
iTrader: (12)
 
bigantws6's Avatar
 
Join Date: May 2011
Location: dallas tx
Posts: 309
Likes: 0
Received 0 Likes on 0 Posts
Default

Y is that
Old 07-06-2012, 08:23 AM
  #18  
9 Second Club
iTrader: (7)
 
quik95lt1's Avatar
 
Join Date: Dec 2008
Location: Rhode Island
Posts: 4,464
Likes: 0
Received 12 Likes on 10 Posts

Default

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
Old 07-06-2012, 08:28 AM
  #19  
TECH Enthusiast
 
Gunslinger09's Avatar
 
Join Date: Nov 2004
Location: Tampa FL
Posts: 714
Likes: 0
Received 0 Likes on 0 Posts
Default

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.
Old 07-06-2012, 08:42 AM
  #20  
TECH Apprentice
iTrader: (12)
 
bigantws6's Avatar
 
Join Date: May 2011
Location: dallas tx
Posts: 309
Likes: 0
Received 0 Likes on 0 Posts
Default

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



All times are GMT -5. The time now is 03:55 PM.