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View Poll Results: Grand Am Cup Cam vs. T-Rex Killer
Grand Am Cup Cam
24
42.11%
T-Rex Killer
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57.89%
Voters: 57. You may not vote on this poll

Grand Am Cup Cam vs. T-Rex Killer

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Old 12-20-2005, 06:16 PM
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well, my apologies. I was unaware of that. Congrats. Regardless of that you say, and regardless of the cams performance, the name of the cam is a marketing ploy.
Old 12-20-2005, 07:04 PM
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I myself do not call my cam the trex killer. That is a name that they made up. To me it is just my custom grind.

Joe
Old 12-20-2005, 07:14 PM
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Not to drag this thread out too much further, but what is the reason that certain cams are not intended for use with aftermaket heads (insert your favorite here)? I just went with the assumption that it was part of a "combo".
Old 12-20-2005, 07:33 PM
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Sure it's part of a combo. X cam with stock heads. lol
The cams are designed around the limitations of stock heads.
Old 12-20-2005, 07:39 PM
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Originally Posted by calongo_SS
surging, bucking, rough starts, all the things that come along with a monster cam.
not if you know how to tune
Old 12-20-2005, 07:56 PM
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Originally Posted by calongo_SS
Sure it's part of a combo. X cam with stock heads. lol
The cams are designed around the limitations of stock heads.
Hah, true. Well that was what i needed i guess
Old 12-20-2005, 07:56 PM
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I thought Joe Overton promoted the T-Rex Killer. LS1 Joe is Joe Huneycutt from T56 Rebuilds and he's been running his nasty custom Comp cam for a year and a half. If you do a title search for LS1 Joe, his specs are not hard to find and are certainly not T-Rex Killers, just thoughtfully chosen lobes that have helped him run 10.30s at over 130 cam only. FWIW, if LS1 Joe bolted up some AFR 225 small bore heads, he'd add another 40-50 rwhp to what he's making now. That would put him in the 510+ rwhp range! Yikes!!
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Old 12-20-2005, 07:59 PM
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Originally Posted by Patrick G
I thought Joe Overton promoted the T-Rex Killer. LS1 Joe is Joe Huneycutt from T56 Rebuilds and he's been running his nasty custom Comp cam for a year and a half. If you do a title search for LS1 Joe, his specs are not hard to find and are certainly not T-Rex Killers, just thoughtfully chosen lobes that have helped him run 10.30s at over 130 cam only. FWIW, if LS1 Joe bolted up some AFR 225 small bore heads, he'd add another 40-50 rwhp to what he's making now. That would put him in the 510+ rwhp range! Yikes!!

See! this is what I was getting at with the "combo" thing!
Old 12-20-2005, 08:00 PM
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Well if I do end up getting one of these cams, I'll have one of the best dyno tunes you can get. So will these cams work with my Patriot heads, I realize I'll probably have to flycut the pistons but besides for that?
Old 12-20-2005, 08:00 PM
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Well are they the Ls6 unmilled stage II CNC'ed heads?
Old 12-20-2005, 08:07 PM
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Ok why the hell would anyone buy a cam if they dont know the specs. Thats pathetic -what does this dude that made the t-rex killer actualy think he is some kind of master mind --gimme a break . Nothing goes in my motor without specs .
Old 12-20-2005, 10:06 PM
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My heads are the LS1 milled .30". They have Patriot Gold .650" Dual Springs.

Yea, that's one of the things that bothers me about the Killer cam, not knowing exactly what it is. I've seen some cars run some nice numbers with it but I hate it cause I don't know what I'm putting in my car.

Yea, Joe Overton is the one that has them. I heard someone on here talking about it so I looked at his site, http://www.lethalefi.com/products.htm, and looked at the cam on there.
Old 12-21-2005, 09:23 AM
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From my own research past and the last couple of days, I would grab the rex killer cam of these 2. Both are going to be really really close on pv. The cup cam is a really nasty cam. I don't think in hydrolic form you will find another quite as aggressive on the duration and lsa off the shelf, and it has a very distinctive lope to it. It can make a lot of HP, BUT you have to be able to spin the motor to the moon and back frequently to make it. It seems to pull well past 7k in many instances, and really has no low end below 3k-3500k. From talking to guys in the past that have this cam, and really considering myself for the last couple of years, I've also found that the tuning for it is what some consider impossible. I don't believe that is completely true, but it will take some time to get right on idle and AF.

Now the rex killer seems to have what most consider a comparable drivablility for a DD. So in that respect they are about equal. neither will be fun if a DD is driven in heavy stop and go traffic. Hell some lesser cams get really anoying in traffic especially with an M6...talk about clutchitis. Anyway, I think the rex killer is more suite by design for drag strip use where as the GAC cam was designed with a sole purpose to be on the World Challenge road track (ie turning 6500+) all the time. Not saying it wouldn't be a blast to drive, but it really won't make power on the street without some seriously steep gears and/or a pretty big stall.

Now, in conclusion to all of this rambling i would say that both cams are proven in their own right. I am guessing that you are a DD/drag racer, and somehow HP seems to be a goal. I prefer the #'s at the track as a bigger priority than just hp alone, so I think the rex killer would be the choice of these 2 cams. Look around though because there are many cams out there that may suffice, and be more suitable to your needs. You just really need to evaluate and decide exactly WHAT you want to get out of the cam.....not to mention what works best with the setup you plan to have as a complete package. And thats my .02

Rich
Old 12-21-2005, 01:25 PM
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Thanks for all the info. That's kinda what I was thinking. If I do take in on the streets, I live in a town where there's not much traffic and not many stoplights so I don't have that much stop and go driving, it's mostly just cruising about 30mph. I haven't really heard much bad about either cam so that's good. So you guys don't think that either of these cams would have much low-end even with a say 4200-4400 stall and 3.73's? I don't want to loose all of my low-end cause their are a few pesky cars I like to take car of in town sometimes. Do you guys think that the Killer would have better town driving characteristics than the Cup cam?
Old 12-21-2005, 01:47 PM
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With a 4400 stall, you don't really have to worry about low rpm driveability, LOL. Just stab it and let 'er rip.

The Killer is going to make more power, but it will also require you to pay closer attention to the valvetrain (ie proper geometry, proper spring/lifter/rocker/retainer selection, etc.).
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Old 12-22-2005, 12:00 AM
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Originally Posted by Taspeed
From my own research past and the last couple of days, I would grab the rex killer cam of these 2. Both are going to be really really close on pv. The cup cam is a really nasty cam. I don't think in hydrolic form you will find another quite as aggressive on the duration and lsa off the shelf, and it has a very distinctive lope to it. It can make a lot of HP, BUT you have to be able to spin the motor to the moon and back frequently to make it. It seems to pull well past 7k in many instances, and really has no low end below 3k-3500k. From talking to guys in the past that have this cam, and really considering myself for the last couple of years, I've also found that the tuning for it is what some consider impossible. I don't believe that is completely true, but it will take some time to get right on idle and AF.

Now the rex killer seems to have what most consider a comparable drivablility for a DD. So in that respect they are about equal. neither will be fun if a DD is driven in heavy stop and go traffic. Hell some lesser cams get really anoying in traffic especially with an M6...talk about clutchitis. Anyway, I think the rex killer is more suite by design for drag strip use where as the GAC cam was designed with a sole purpose to be on the World Challenge road track (ie turning 6500+) all the time. Not saying it wouldn't be a blast to drive, but it really won't make power on the street without some seriously steep gears and/or a pretty big stall.

Now, in conclusion to all of this rambling i would say that both cams are proven in their own right. I am guessing that you are a DD/drag racer, and somehow HP seems to be a goal. I prefer the #'s at the track as a bigger priority than just hp alone, so I think the rex killer would be the choice of these 2 cams. Look around though because there are many cams out there that may suffice, and be more suitable to your needs. You just really need to evaluate and decide exactly WHAT you want to get out of the cam.....not to mention what works best with the setup you plan to have as a complete package. And thats my .02

Rich

I know you like the different approach on cam selection than most people.

My 244/248 has hardly anything down low, (up top is a different story ) and I can only imagine that the GAC would be near any better. But however I am still running the 3.42's. The Cup cam would probably be like taking off in 3rd gear in an M6.

I would run the Rex-Killer if I had the weekend+cash to do the swap to the unmilled heads again. hands down.
Old 12-22-2005, 01:13 AM
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Yea, the mill on the heads bothers me but I don't think anything flycutting can't take care of. Orangeapeel, I'd say that the GAC wouldn't act much different than the cam your running. Do you have any idea what your running 0-60 with that cam and gearing? Are you running an M6 or A4?
Old 12-22-2005, 01:25 AM
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Ok, here is one major aspect between the 2. That cam is on a 106, and mine is on a 115.

No Clue on the 0-60. It has a stutter step if I don't feather and take off at 2k.

Feather...haha, yeah M6.
Old 12-28-2005, 11:37 PM
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Originally Posted by MountainMotor
Yea, the mill on the heads bothers me but I don't think anything flycutting can't take care of. Orangeapeel, I'd say that the GAC wouldn't act much different than the cam your running. Do you have any idea what your running 0-60 with that cam and gearing? Are you running an M6 or A4?

the GAC has more then double the overlap @ .050 then orangepeels cam; 33* vs 16* respectively. the cams will not act the same.
Old 12-29-2005, 07:43 AM
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I have the Trex killer cam. I am running a A.R.E shortblock with valve reliefes. The piston deck height on this short block is 0 so I am running a .036" cometic gasket with .030 milled heads. Put in 2* advanced there was .100+ of p to v. I will be putting the car back together here in about a week and should have some dyno numbers shortly after.

I would have to disagree that this cam would do better with stock heads and the lobes on this cam are not too agressive.

Last edited by DEEZ98Z; 01-29-2006 at 08:52 PM.


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