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Old 12-06-2012, 10:08 PM   #1
burgboy73
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Choosing between 2 cams - VRX5 or the XER273HR

I've narrowed down my 2 cam choices between the VRX5 (236/238 .601/.605 113 LSA) or the Comp Cam XER73HR (224/230 .581 /.588 on a 114 LSA). Mods include the following:

Kooks Lt's with off road mids
Corsa Sport exhaust
Vararam CAI
Ported FAST 92 intake
UD pulley
Monster Level 2 clutch

My tuner recommends the XER.. but I hear so many good things about the VRX5 (plus I love the idle!!)
Its mostly a DD on the weekends and some days during the week...

What makes me smile more than anything are those 1st, 2nd and 3rd gear romps.... I want a cam that will perform in that area... Not a track guy.. just want to eat some Mustangs on the street from time to time..

Can anyone help me choose?
Thanks!
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Old 12-06-2012, 10:14 PM   #2
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Vrx5


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Old 12-06-2012, 10:47 PM   #3
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Best to just contact EdC.....or 87LC2.



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Old 12-06-2012, 10:54 PM   #4
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Best to just contact EdC.....or 87LC2.



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wait for it...
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Old 12-06-2012, 11:44 PM   #5
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Do the smaller one. The increases are in the lower power band, where DD cars like it.
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Old 12-07-2012, 12:09 AM   #6
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wait for it...

Megadeath Cam!
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Old 12-07-2012, 12:19 AM   #7
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Old 12-07-2012, 12:54 AM   #8
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Quote:
Originally Posted by Mike-Omologato-G....View Post
Do the smaller one. The increases are in the lower power band, where DD cars like it.



This is good advice.
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Old 12-07-2012, 03:44 AM   #9
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Megadeath Cam!



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Old 12-07-2012, 03:54 AM   #10
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Quote:
Originally Posted by treys06GTO...View Post
Vrx5


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^^^ this, or go Ed C custom grind


Or quit being a b**** and go MEGADEATH


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Old 12-07-2012, 05:02 AM   #11
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Old 12-07-2012, 02:41 PM   #12
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Cool

Brian, I prefer that CAM that would give me the bottom end, but, it's your build, do what you would like, cause you may second guess it later on. I'm very happy with my 230/232, .595/.585 LSA 113 with the centerline at 109. If I had to make a change with mine, it would have been the LSA, I would have changed it to 112. Can't wait to hear it next spring time, then maybe in several years, you can get to my level
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Old 12-07-2012, 05:19 PM   #13
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I had the VRX5 in my 06 until I had a lifter failure then switched to a custom grind that isn't too far off the Comp XER cam you posted. I ended up going with a custom grind by Cam Motion that was like 228/230 588/592 in a 112+4 LSA. Made killer power on the bottom and continued to pull through the upper end as well. Mine was a DD and I loved it, plus the lobes had nice smooth ramp up and down rather than a sharp rise and fall.
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Old 12-07-2012, 06:46 PM   #14
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You'll see much nicer low end with the comp, but if it isn't pulling DD duty 5 days a week go for a little more.

My HPE-C cam is a 232/234 duration just under .600 lift and 112 lobe separation. It screams up top but for me i feel like i have plenty of low end to pull DD duty if i need to.

But the best advice is, call Ed. Be honest with how you drive the car to get a cam that suits you.
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Old 12-07-2012, 06:52 PM   #15
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Moral of the story: call Ed Curtis, LS cam guru

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Old 12-07-2012, 09:39 PM   #16
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Quote:
Originally Posted by Mike-Omologato-G....View Post
Do the smaller one. The increases are in the lower power band, where DD cars like it.

Agree in principle, and especially since you are going with stock heads.
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Originally Posted by EDC...View Post
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Ed, I gotta tell you I don't like your blatant self aggrandizement when you pop into every thread... but... well, you're good. Yes, only good: like an artist, you gotta be dead before I give anybody 'Great' status.

OP the difference between one of those two cams (or any other two off the shelf cams that appear to be ideal for your setup) is fairly small. Really small if you are a big picture "good enough" type guy. torque coming in 300rpm lower maybe. Or average torque 10ftlb higher. Horsepower not falling off at 6500rpm but instead 6600rpm and then tails off instead of cliff diving. little less lope but with more hp and tq then your buddies more lopey cam. less surging and other lower rpm part throttle oddities that big cams inevitably exhibit (tuning can't cure everything, though a good tune is probably more important than a perfect sized cam).

Little things that will only bug you 5,000 miles down the road. Especially when it dawns on you that having a torque curve that stretches 300-400rpm wider would make a huge difference on that 4-5 shift, or that you would not have to max rev it each time in order to get into that sweet spot of torque in the next gear. Example below:

Knowing that you ideally shift at 6500rpms but you can take it out to 6800 with near peak power if needed to take the win at the very end of the race, or knowing that you can shift 200rpms early and still be in the meat of your torque in the lower gears to avoid the dreaded rev limiter (stock tach is woefully slow). All that matters, and if you are a true car guy you will find those little nits and it will bother you. I've had a ton of cams in my various cars, literally dozens. Only 2 were custom, and those two not coincidentally were the best out of the lot for the application I used them in.

Your call buddy, I'm just trying to give you a full spectrum of info to use to make your judgement. The $200-$300 price difference between a shelf cam and Ed's cam is money you will never regret spending after you hop into the car for it's first drive. Before that drive? lol yea you will second guess spending that money. But not afterwards.
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Old 12-07-2012, 10:20 PM   #17
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Quote:
Originally Posted by Sticks n Stones...View Post
Agree in principle, and especially since you are going with stock heads.


Ed, I gotta tell you I don't like your blatant self aggrandizement when you pop into every thread... but... well, you're good. Yes, only good: like an artist, you gotta be dead before I give anybody 'Great' status.

OP the difference between one of those two cams (or any other two off the shelf cams that appear to be ideal for your setup) is fairly small. Really small if you are a big picture "good enough" type guy. torque coming in 300rpm lower maybe. Or average torque 10ftlb higher. Horsepower not falling off at 6500rpm but instead 6600rpm and then tails off instead of cliff diving. little less lope but with more hp and tq then your buddies more lopey cam. less surging and other lower rpm part throttle oddities that big cams inevitably exhibit (tuning can't cure everything, though a good tune is probably more important than a perfect sized cam).

Little things that will only bug you 5,000 miles down the road. Especially when it dawns on you that having a torque curve that stretches 300-400rpm wider would make a huge difference on that 4-5 shift, or that you would not have to max rev it each time in order to get into that sweet spot of torque in the next gear. Example below:

Knowing that you ideally shift at 6500rpms but you can take it out to 6800 with near peak power if needed to take the win at the very end of the race, or knowing that you can shift 200rpms early and still be in the meat of your torque in the lower gears to avoid the dreaded rev limiter (stock tach is woefully slow). All that matters, and if you are a true car guy you will find those little nits and it will bother you. I've had a ton of cams in my various cars, literally dozens. Only 2 were custom, and those two not coincidentally were the best out of the lot for the application I used them in.

Your call buddy, I'm just trying to give you a full spectrum of info to use to make your judgement. The $200-$300 price difference between a shelf cam and Ed's cam is money you will never regret spending after you hop into the car for it's first drive. Before that drive? lol yea you will second guess spending that money. But not afterwards.

Thank you very much for your reply. I appreciate everyone's comments. I thing I may give Ed a call.

Thanks!
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Old 12-08-2012, 07:05 AM   #18
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Quote:
Originally Posted by Sticks n Stones...View Post
Ed, I gotta tell you I don't like your blatant self aggrandizement when you pop into every thread... but... well, you're good. Yes, only good: like an artist, you gotta be dead before I give anybody 'Great' status.

At least I'm not posting "thank you for your orders" to keep the thread going -

The camshafts mentioned by the OP are Comp XER lobes and old school thinking. Not the best choices for power nor are they easy on valve springs. If I posting their downfalls in every "what if" thread, it would get extremely boring so I keep it short and sweet.

There are countless times where the swap from a shelf grind to something more current shows better "average" power as well as longer valvetrain life. I'm also not limited to the typical Comp master lobes like so many others use. I have dealers all over the world that continue to show me their results with the stuff I provide and their constant return orders show something is right. Can't argue with facts.

Quote:
Your call buddy, I'm just trying to give you a full spectrum of info to use to make your judgement. The $200-$300 price difference between a shelf cam and Ed's cam is money you will never regret spending after you hop into the car for it's first drive. Before that drive? lol yea you will second guess spending that money. But not afterwards.


Actually, less than $50 difference between catalog grinds and my customs since I include the shipping.

Merry Christmas SnS...
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Old 12-08-2012, 10:26 AM   #19
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Man, SnS, you sound like you have issues. I'm sure Burgboy would like suggestions, not someone who likes to bash people.
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Old 12-08-2012, 10:44 AM   #20
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93mph in the 1/8th @ 2,000 DA.

Big camz have no low end brahs.

I shoulda went with a 185/185, .365/.365 on 135+9 LSA. That way I woulda had mad torqz at half throttle on the way to Walgreens.


MAD TORQZ!
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Old 12-08-2012, 01:05 PM   #21
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Quote:
Originally Posted by CoolAid...View Post
93mph in the 1/8th @ 2,000 DA.

Big camz have no low end brahs.

I shoulda went with a 185/185, .365/.365 on 135+9 LSA. That way I woulda had mad torqz at half throttle on the way to Walgreens.


MAD TORQZ!

+1
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Old 12-08-2012, 01:32 PM   #22
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I'm thinking of trading my 239/242 in for CoolAid's suggestion of a 185/185. I was cruising in sixth at 45mph when I floored it, racing a Kia. I was behind by a car and a half when I reached Walgreens.

Then again, I need new tires, maybe I should just trade in the goat. That Kia sure looked nice.
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Old 12-08-2012, 05:21 PM   #23
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Man, SnS, you sound like you have issues. I'm sure Burgboy would like suggestions, not someone who likes to bash people.

??? did I miss something? Wasn't bashing Ed. I was just giving him a little friendly ribbing is all, and if you can't tell that then YOU have issues with interpersonal relationships.
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Old 12-08-2012, 05:21 PM   #24
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VRX5, but I'm probably biased.

Nothing wrong with getting the other one or a custom grind from ED though if its your DD.
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Old 12-08-2012, 05:32 PM   #25
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I had the X5. It was surprisingly decent on the bottom end for a big cam and it just exploded after 2800 rpms. Awesome idle too. But it was murder on my valvetrain, I believe. Suffered repeated YT breakages, which lead to metal in engine and upper valvetrain meltdown. Just too violent. I went with a custom grind from Cam Motion, more lift, less duration, milder lobe. Much nicer car to drive, makes more power still has a nasty idle.
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Old 12-08-2012, 05:37 PM   #26
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Quote:
Originally Posted by CoolAid...View Post
93mph in the 1/8th @ 2,000 DA.

Big camz have no low end brahs.

I shoulda went with a 185/185, .365/.365 on 134+9 LSA. That way I woulda had mad torqz at half throttle on the way to Walgreens.


MAD TORQZ!

Corrected that, wouldn't want it to be anything crazy...
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Old 12-08-2012, 06:36 PM   #27
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I have a Lunati 227/233 584, 113 I just pulled out. It was a great cam and it looks new, only about 10K miles on it. Numbers with mods in my sig. Going with a new Comp to match my RHS heads a little better. I'd let it go for $250 shipped if you're interested.
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Old 12-08-2012, 10:21 PM   #28
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Quote:
Originally Posted by SJFGTO...View Post
I had the X5. It was surprisingly decent on the bottom end for a big cam and it just exploded after 2800 rpms. Awesome idle too. But it was murder on my valvetrain, I believe. Suffered repeated YT breakages, which lead to metal in engine and upper valvetrain meltdown. Just too violent. I went with a custom grind from Cam Motion, more lift, less duration, milder lobe. Much nicer car to drive, makes more power still has a nasty idle.

While the more aggressive lobes might of helped break your YTs, the LS1/2 rockers, pre-redesign, have a habit of breaking regardless of cam choice.
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Old 12-08-2012, 11:15 PM   #29
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I have the VRX5, i love it made great power and screams at high rpms. Low torque is still good for how big it is, i love the idle too. You will not be disappointed with it. Although i had problems with vengeance racing, had the cam in ready to put in the valve springs... No retainers! Luckily my buddy had some pac 1518 springs so we could use the stock ones. Also took over 3 weeks for the cam and kit to get here. They were cool about it and over nighted cam bolts for me. Mixed feelings about that company. Great cam though.
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Old 12-08-2012, 11:59 PM   #30
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NSSP cam from CSP awesome power and a great price.
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Originally Posted by TheElementalCashew...View Post
Way to be not so sneaky, Pete.

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