T-Rex vs Comp E-XR ?
05-21-2005, 10:30 PM
#1
T-Rex vs Comp E-XR ? Right now I have a Comp E-XR 232/236-595/600-110 LSA I have a forged 348cid 5.3 stagesII heads every bolt on they are, and a n.o.s. 250 shot Pro fogger and custom tune with EFI Live 7.2 flash pack my cam is very strong but i've herd so much about how mean
the T-Rex is,so I ordered the T-Rex will they be much diferance in the two cams you can see my engine in my sig.
the T-Rex is,so I ordered the T-Rex will they be much diferance in the two cams you can see my engine in my sig. 
05-21-2005, 10:33 PM
#2
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I would stick with the smaller cam. I wouldnt base ordering a cam off of how mean they sound. I would base it off of track times. I see more smaller cams run faster track times than these big cams that just make dyno numbers. My two cents.
Rick
Rick
05-21-2005, 10:34 PM
#3
Since you have a forged motor, I assume you have valve reliefs in your pistons? If not, you're going to need them with your Stage II heads and a T-Rex. Since the T-Rex is bigger than your current cam, you should make more power once you have the tune nailed.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
05-21-2005, 11:02 PM
#4
Yes I have Ross Forged pistions with 2cc valve releafs and for the first post i was not talking about the sound, but the power it's putting down at mid and high rpm's i'm shifting at 7400 rpm's with 3:91 gears with a M6. We have a small track here that run only 330 ft.I run 4.78 and 60ft 1.79 but i will be going to a real track, 1/8 mile track close by. And I seen on here were the T-Rex was proven at the track, like the fastest stock internal engine, i beleave. maybe wrong thow!
Last edited by Randy WS6; 05-21-2005 at 11:08 PM.
05-22-2005, 09:46 AM
#6
Originally Posted by Rick@Synergy
I would stick with the smaller cam. I wouldnt base ordering a cam off of how mean they sound. I would base it off of track times. I see more smaller cams run faster track times than these big cams that just make dyno numbers. My two cents.
Rick
Rick
05-22-2005, 12:06 PM
#7
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I can see from your sig you have some great times, but you seem to be one of the few. Look at the cartek guys. I think they are proving more than most people with smaller cams. I dont see real benifits to bigger cams on the dyno. Now if you use a dyno jet like most people, of course its going to look bigger because of the dyno being an inertia dyno, but when you put those cams on loaded dynos, they dont do half of what they should. Its just what I have seen and tuned.
Rick
Rick
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05-22-2005, 12:08 PM
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Originally Posted by Randy WS6
Yes I have Ross Forged pistions with 2cc valve releafs and for the first post i was not talking about the sound, but the power it's putting down at mid and high rpm's i'm shifting at 7400 rpm's with 3:91 gears with a M6. We have a small track here that run only 330 ft.I run 4.78 and 60ft 1.79 but i will be going to a real track, 1/8 mile track close by. And I seen on here were the T-Rex was proven at the track, like the fastest stock internal engine, i beleave. maybe wrong thow!
It only took him 4.56 gears to do it with a 1.4 60ft in a stick car which most people cant even do on spray. So that guy can drive. BUt like I have said before, cartek guys going 10's with cam only and small at that too. We have a car getting close to 10;s with cam only also. Can be done as well.
Rick
05-22-2005, 01:22 PM
#10
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I just dont see how it makes that much more power than all the other cams. Sure it looks good on a Dynojet, but because of how it reads numbers. You put a cam like that on a loaded dyno, its different. I just think there are cams in decent size that do just as well of a job and have better street manors as well when it comes to driving them and enjoying the car.
Rick
Rick
05-22-2005, 03:58 PM
#11
Originally Posted by Rick@Synergy
It only took him 4.56 gears to do it with a 1.4 60ft in a stick car which most people cant even do on spray. So that guy can drive. BUt like I have said before, cartek guys going 10's with cam only and small at that too. We have a car getting close to 10;s with cam only also. Can be done as well.
Rick
Rick
but i definatly have to disagree with smaller cams are doing just as well, the trex and the LG cam are not small but i dont see anywere where smaller cams are doing just as well, both of thes cams should be in the 10.1x range in the near future and im not sure what you talking about with load dynos but the tracks what im basing this off of. i have no doubt what so ever id be in the teens with a th400 tranny in the car. so no matter what the power says or does on a load dyno, the fact is that these cams are ET'ing just as well as they dyno. they are getting close to a half a second ahead of most of the other cams. im sure other cams have better street manner but seeing how he has a forged motor and 250 shot of spray i dont see that makin a huge difference to him.
05-22-2005, 06:17 PM
#12
Well,my cars not be the world fastest,but it will have the T-Rex in it because i've already ordered it, SMOKEN01TA sig tells me all I need to know about the T-Rex cam, and for street friendy with a good tune I don't see any problems with it, The cam I have right now is not that small and it idels perfect and cruses just fine I've even had it in a frew perade's you can see in my sig.
Last edited by Randy WS6; 05-22-2005 at 06:29 PM.
05-22-2005, 10:58 PM
#13
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Originally Posted by Randy WS6
Yes I have Ross Forged pistions with 2cc valve releafs and for the first post i was not talking about the sound, but the power it's putting down at mid and high rpm's i'm shifting at 7400 rpm's with 3:91 gears with a M6. We have a small track here that run only 330 ft.I run 4.78 and 60ft 1.79 but i will be going to a real track, 1/8 mile track close by. And I seen on here were the T-Rex was proven at the track, like the fastest stock internal engine, i beleave. maybe wrong thow!
05-24-2005, 01:53 AM
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Originally Posted by Rick@Synergy
I just dont see how it makes that much more power than all the other cams. Sure it looks good on a Dynojet, but because of how it reads numbers. You put a cam like that on a loaded dyno, its different. I just think there are cams in decent size that do just as well of a job and have better street manors as well when it comes to driving them and enjoying the car.
Rick
Rick
look at my car weight in at 32?? it is running 6.81 in the 1/8 on stock heads this was in +200 da i have some LS6 heads on the car now and i am waiting to get some time off from work to go back out to the track and see what it runs now. and i also have a Trex cam with 373 and a a4 in the car threw a 12 bolt with 373 gears