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Generation III Internal Engine
1997-2006 LS1 | LS6
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Old 07-23-2010, 08:27 PM   #1
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Default t-rex cam info

if anyone has a picture of the cam card or all the info for a t-rex cam it would be greatly appreciated...my buddy is wanting to have his cam degreed and needs the info....thanks
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Old 07-23-2010, 08:39 PM   #2
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i would have to find mine but just call thunder racing. but remember all cams are not teh same. i held two t-rex cam cards next to each other and they were slightly different.
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Old 07-23-2010, 09:03 PM   #3
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A cam card is for one specific cam. There could be slight variations, which is why they provide a cam card with each cam.
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Old 07-23-2010, 10:37 PM   #4
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i just need to get in the ball park....thanks
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Old 07-23-2010, 10:42 PM   #5
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i don't think you want to "ball park" a t rex cam...
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Old 07-23-2010, 11:05 PM   #6
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Here you go, ball park figure straight from their website:

242/248 duration, .608/.612 lift, 110 lsa
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Old 07-24-2010, 12:22 AM   #7
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My card says

Thunder racing Custom Camshaft

Duration@.050: Intake 244 ----Exhaust 250

Valve Lift w/1.7 rocker: Intake .610 Exhaust .615

Lobe Separation Angle: 109.51

Cam Checked By: WR?? Cant read his signature SN: D1567
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Old 07-24-2010, 11:09 AM   #8
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That's a perfect example of how far off from the advertised specs the actual grind can be.
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Old 07-24-2010, 12:57 PM   #9
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Quote:
Originally Posted by batboy View Post
That's a perfect example of how far off from the advertised specs the actual grind can be.
x2. 'Ball-parking' a T-rex cam defeats the purpose of degreeing and is just asking for trouble.
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Old 07-24-2010, 05:43 PM   #10
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Well put gentlemen. As stated before that is a large cam that must be set up and tuned extensively for the power potential of that cam. good luck. if all else fails call thunder racing with the number on the end of the cam and hope they have a card for it. if not i reccomend taking it to a cam doctor and seeing exactly what the specs are.
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Old 07-24-2010, 08:51 PM   #11
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we've tried to call and email them with no luck....the motor does'nt have any compression and were hunting for the problem...the motor has 13.1 pistons but we did a compression check and it does'nt show but a 140lbs...we also did a leak down and its not the rings so were wanting to check cam timing...i appreciate people giving the helpful info..i just wish we had the cam card or wrote the info down from the cam when we had the motor apart...thanks again billy
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Old 07-24-2010, 09:24 PM   #12
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Quote:
Originally Posted by billyflantos View Post
we've tried to call and email them with no luck....the motor does'nt have any compression and were hunting for the problem...the motor has 13.1 pistons but we did a compression check and it does'nt show but a 140lbs...we also did a leak down and its not the rings so were wanting to check cam timing...i appreciate people giving the helpful info..i just wish we had the cam card or wrote the info down from the cam when we had the motor apart...thanks again billy
That's an odd set of circumstances... I suppose if you really want to do it right I would suggest pulling the cam and having it spec'd out.
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Old 07-24-2010, 11:02 PM   #13
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Quote:
Originally Posted by Longshot LCMS View Post
That's an odd set of circumstances... I suppose if you really want to do it right I would suggest pulling the cam and having it spec'd out.
im hoping it wont have to come to that.....but thats next on the list.
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Old 07-25-2010, 11:33 AM   #14
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y r u trying to degree it??? it already keeps making power til 7k......
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Old 07-25-2010, 12:44 PM   #15
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Quote:
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y r u trying to degree it??? it already keeps making power til 7k......
refer to post #11
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Old 07-26-2010, 03:01 PM   #16
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hmm...if your degreeing in the cam i assume you have a degree wheel. use the degree wheel to find the exact specs. that is the easiest way. Comp used to have really good instructions on how to do this on their website.
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Old 07-26-2010, 03:01 PM
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