Comp-Cams 'Xtreme' XE-268 vs. Crower 'Ultra-Beast' 269H

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69 Cuda 440

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Camshaft Performance Comparison

Comp-Cams 'Xtreme Energy ' XE-268H
vs.
Crower 'Ultra Beast' 269H
-------------------------------------------------------------------------------------

Customers Car

1970 Duster 340
Curb Weight........ #3280 lbs.

* Refeshed 340 Engine
> Stock Factory Pistons {Piston-to-Cylinder Wall Clearance > .005"}
> Speed-Pro Oil-Rings {+.005"}
> Decked {Piston Dome +.018" above-deck}
> Compression Ratio = 10.0
> Balanced {Crankshaft, Connecting-Rods, Pistons}
> Melling Hi-Volume Oil Pump
> Cloyes Single 'Non-Roller' Timing Chain
> PowerForce #80012 Harmonic-Balancer

* Stock Cylinder Heads > #2531894 'X' Head Casting
> 4/Angle Valve Job {w/75* Deep-Throat Cut}
> Combustion Chamber CC'd to {68.0}
> 2.02" Intake Valves {30* Back-Cut}
> 1.60 " Exhaust Valves
> Gasket/Port Matched

* 'Stock' Cast Iron Intake Manifold #3462848
> Gasket/Port Matched

* 'Stock' Carter AVS #4933 {630 CFM} Carburetor
> Primary Jets {.101"} ~ Secondary Jets {.098"}
> Metering Rods .068" x .047"

* Exhaust System
> Stock Exhaust Manifolds {Outlet honed out to 2.50"}
> 2.50" Primary Pipes
> Cherry Bomb #87096 Mufflers {2.50" Inlet ~ 22" Length ~ 2.25" Outlet}
> 2.25" Tail Pipes

* MSD #8388 ~ 'Ready-to-Run' Electronic Distributor
> MSD PH6200 6A ~ Capacitive Discharge 'Ignition Box'
> MSD 'Street-Fire' Ignition Wires

* 4-Speed {A-833} Ratio's > 2.47 ~ 1.77 ~ 1.34 ~ 1.00
> Zoom Street/Strip Clutch Set-up {#2500 lb. Spring Load-Rate}
> Stock Flywheel {10.5"} 30 lbs.
> 3.91 Gears
> 225/70 x 15" Rear Tires {27.4" Diameter}
-----------------------------------------------------------------------

"Comp-Cams XE-268H"

Part #20-223-3
Profile Name > 'Xtreme Energy'
Type > Hydraulic

Lift........................... .477"/.480"
Duration.................... 268*/280*
Duration @.050" ........ 224*/230*
Overlap..................... 54*
LSA........................... 110*
Centerline.................. 106*

Power Range.............. 1800 to 5800 RPM's
Best Torque Band........ 2400 to 4000 RPM's
Red Line..................... 6000 RPM's

* Mildly-Rough Idle
* Great for Street Performance
* Strong Low-to-Mid Range Torque
* Balanced Power-Range

Valve Springs #901 {Single-Coil w/Damper]
* #101 lbs. @ 1.650" {Installed Height}
* #242 lbs. @ 1.250"
* #270 lbs. @ 1.170" {Valve Open}

~ Versus ~

"Crower 269H"

Part #31916
Profile Name > "Ultra-Beast"
Type > Hydraulic

Lift.......................... .480"/.494"
Duration................... 269*/282*
Duration @ .050" ...... 223*/234*
Overlap..................... 62*
LSA.......................... 112*
Centerline................. 108*

RPM Power-Range...... 2000 to 4800 RPM's
Best Torque Band....... 2800 to 4500 RPM's
Red Line.................... 6200 RPM's

* Moderate Lope at Idle {Semi-Rough}
* High-End Street Camshaft
* Range > Upper Bottom-End to Top-End
* Strong Mid-Range Power
* Emphasis on Top-End

Valve Springs > #68405 {Dual-Coil Valve Spring}
* #110 lbs. @ 1.700" {Installed Height}
* #297 lbs. @ 1.200" {Valve-Open}
 
69 Cuda 440 said:
Camshaft Performance Comparison

Comp-Cams 'Xtreme Enery ' XE-268H
vs.
Crower 'Ultra Beast' 269H
-------------------------------------------------------------------------------------

Customers Car

1970 Duster 340
Curb Weight........ #3280 lbs.

* Refeshed 340 Engine
> Stock Pistons w/Speed-Pro Oil-Rings
> Decked {Piston Dome +.018" above-deck}
> Compression Ratio = 10.0
> Balanced {Crankshaft, Connecting-Rods, Pistons}
> Melling Hi-Volume Oil Pump

* Stock Cylinder Heads
> 5/Angle Valve Job {w/75* Deep-Throat Cut}
> Combustion Chamber CC'd to {68.0}
> 2.02" Intake Valves {30* Back-Cut}
> 1.60 " Exhaust Valves

* Stock Intake Manifold
> Gasket/Port Matched

* Carter AVS {630 CFM} Carburetor
> Jetted with Street/Strip-Kit

* Exhaust System
> Stock Exhaust Manifolds
> Stock 2.25" Primary Pipes
> Cherry Bomb Mufflers
> 2.25" Tail Pipes

* 4-Speed
> Zoom Street/Strip Clutch Set-up
> 3.91 Gears
-----------------------------------------------------------------------

"Comp-Cams XE-268H"

Part #20-223-3
Profile Name > 'Xtreme Enery'

Lift........................... .477"/.480"
Duration.................... 268*/280*
Duration @.050" ........ 224*/230*
Overlap..................... 54*
LSA........................... 110*
Centerline.................. 106*

Power Range.............. 1800 to 5800 RPM's
Best Torque Band........ 2400 to 4000 RPM's
Red Line..................... 6000 RPM's

* Mildly-Rough Idle
* Great for Street Performance
* Strong Low-to-Mid Range Torque
* Balanced Power-Range

Valve Springs #901 {Single-Coil w/Damper]
* #101 lbs. @ 1.650" {Installed Height}
* #242 lbs. @ 1.250"
* #270 lbs. @ 1.170" {Valve Open}

~ Versus ~

"Crower 269H"

Part #31916
Profile Name > "Ultra-Beast"

Lift.......................... .480"/.494"
Duration................... 269*/282*
Duration @ .050" ...... 218*/227*
Overlap..................... 62*
LSA.......................... 112*
Centerline................. 108*

RPM Power-Range...... 2000 to 4800 RPM's
Best Torque Band....... 2800 to 4500 RPM's
Red Line.................... 5300 RPM's

* Moderate Lope at Idle {Semi-Rough}
* High-End Street Camshaft
* Range > Upper Bottom-End to Top-End
* Strong Mid-Range Power
* Emphasis on Top-End

Valve Springs > #68305X1 {Single-Coil w/Damper}
* #87 lbs. @ 1.650" {Installed Height}
* #250 lbs. @ 1.200"
* #262 lbs. @ 1.170" {Valve-Open}
Click to expand...

The Crower Camshaft has a wide Lobe-Center, and an aggressive Exhaust
closing Lobe.
 
I'm confused.....did I miss the question, or are you just stating the specs of these 2 similar cams????
 
Although there is not a whole lot of difference between them. I think you would be better off with the Comp. I think your 4 speed setup would like the top end of the Comp a little better.

Jack
 
EL5DEMON340 said:
What are we guessing here, do you have a dyno to strap the engine on?
Click to expand...

General Performance Results

~ Comp-Cams XE-268 ~

Acceptable 'semi-rough' Idle. Great low-end response just like Comp-Cams stated.

The 340 pulled like a 'Wild African Cape Buffalo' right up to 5400 RPM's.

Very strong Mid-Range power.

Driveability Index with the 4-Speed = B+
 
69 Cuda 440 said:
Camshaft Performance Comparison

Comp-Cams 'Xtreme Enery ' XE-268H
vs.
Crower 'Ultra Beast' 269H
-------------------------------------------------------------------------------------
"Comp-Cams XE-268H"

Part #20-223-3
Profile Name > 'Xtreme Enery'

Lift........................... .477"/.480"
Duration @.050" ........ 224*/230*
Overlap..................... 54*
LSA........................... 110*
Centerline.................. 106*


~ Versus ~

"Crower 269H"

Part #31916
Profile Name > "Ultra-Beast"

Lift.......................... .480"/.494"
Duration @ .050" ...... 218*/227*
Overlap..................... 62*
LSA.......................... 112*
Centerline................. 108*
Click to expand...


I'm assuming you want to compare these 2 to see which is better?

There really isn't a good answer for this and it would probably depend on the application.

The lift is negligible and can easily be altered by changing the rocker ratio. I'd rather have my cam cut with the lift I want rather than get it out of the rockers.

The comp cams has more duration and a tighter LSA but also has less overlap. While the crower has less duration, more LSA but also more overlap.

I'd say the comp cams will make more power. The crower might be a little tolerant of fuel and timing.

I'm not a big fan of hydraulic cams and if I'm not mistaken both of these are?
 
I think the redline on the Crower cam is a misprint. 5200 rpm seems more like it. That said, those cams aren't really that close. I went to Crower's site to find a more comparable cam and didn't see anything I like better than the Comp cam you have listed. It's a very good street cam and extremely popular for a reason.

I'm assuming you're not wanting to get too aggressive with it, but want a little improvement over stock with a nice little chop at idle. Your choice to keep iron manifolds and carb choice are where I came to this conclusion. If I'm correct then the XE268 would be a good choice IMO.
 
Rusty.......Breath. :)

I run the xe268 in my mild 360. Little **** runs pretty good.
 
I will never understand why a 4 speed and a 3.91 gear would need a 112 LSA, or even a 110 LSA. So IMHO both cams are junk. With the stick and 3.91 gear you can use a 106-108 LSA.

It's not a chevy is it?

Call Jim at Racer Brown or Danny at Cam Motion and see what they say.
 
Both ,are good cams. However The Crower cam card specs, are off. Have ran the 31916 in 2 personally, one build I was involved with. Hasn't changed since Y2K, to my knowledge. The specs on all three I ran:


Part Number/Work Order Number 31916
Engine Application 273-360 MOPAR
Grind Number 269H
ADVERTISED CAMSHAFT SPECIFICATIONS:
INTAKE: Duration: 269º Lift: .480 Clearance Hot: .000
EXHAUST: Duration: 282º Lift: .493 Clearance Hot: .000

The specifications listed above are based on a rocker arm ratio of 1.50 IN
1.50 EX

RECOMMENDED VALVE SPRING INFORMATION:
Part # Single X Dual Triple
Approximate spring pressure: valve closed: 075/090 LBS.
valve open: 230/245 LBS.

3.5 BTDC 1.0 ATDC

39.5 ABDC 53.0 BBDC

Timing Events
The information below is for degreeing cam only. Correct only at .050" tappet lift.
INTAKE Opens: 3.5 BTDC
Closes: 39.5 ABDC
EXHAUST Opens: 53.0 BBDC
Closes: 1.0 ATDC

LOBE SEPARATION 112º

Duration at .050" Intake: 223º
Exhaust: 234º
LOBE LIFT Intake: .320
Exhaust: .329

4 degrees of advance have been ground into this Camshaft.

If using "Lobe Center" method of degreeing, cam should be installed on an intake centerline of: 108º
NOTES:

Cams damaged by excessive spring pressure, over shimming, valve train bind or retainers contacting the guides are void from warranty. Refer to the "Important Camshaft and Lift Information" booklet included with each new Crower camshaft to avoid any break-in problems.
Both cams are good, would imagine either will get the job done. I was using about a 5500-5700 shift point stock heads, 61-6300 with a good bowl porting/1.88 set up.
 
Thanks Tim. Seems the Ultra Beast is a little better than previously stated.
 
A-Body

My error on the Crower #31916 Duration @ .050" Lift

It is as you stated ....... 223*/234*

Crower has also changed the Valve Spring recommendation to #68405,
which are Dual-Valve Springs {Inner and Outer}

Load Rate
#110 lbs. @ 1.70"
#297 lbs. @ 1.20

Last year, Crower Cams had given us the Camshaft & Kit {for free} to
Test on the 340 4-Speed.
 
Performance Results

1970 Duster 340 ~ 4-Speed ~ 3.91 Gears
_____________________________________________________

Factory Output Specifications
* 275 HP @ 5000 RPM's
* 340 Ft/Lbs. of Torque @ 3200 RPM's

* Average Factory Tested Performance ... 14.22 @ 98.05 MPH
_____________________________________________________

Re-freshened with previous listed Specifications w/Stock Valve Train

Tested Output
* 293 @ 5200 RPM's
* 351 Ft/Lbs. @ 3600 RPM's

* Best Performance ............................... 14.03 @ 99.22 MPH
_____________________________________________________

With Comp-Cams XE-268 'Xtreme-Energy' Camshaft and Valve Train

Tested Output
* 322 HP @ 5500 RPM's
* 380 Ft/Lbs. of Torque @ 4000 RPM's

* Best Performance ............................... 13.72 @ 102.42 MPH
 
You can have to very similarly ground cams on paper, such as these 2 cams, yet the lobe can be ground differently. The duration specs at .050 and gross are just 2 of the figures. What about duration at .200 lift? That's where things can change and why two very similar looking cams can run different in the same setup

BTW: do you plan on testing the Crower cam also?
 
I've personally had great success with wide LSA's on milder close ratio 4spd cars with some gear. The 106/108 grinds always worked well for me with a auto trans because it peaked the torque more at the launch point and at the drop in shift rpm.
 
OldmanRick said:
I've personally had great success with wide LSA's on milder close ratio 4spd cars with some gear. The 106/108 grinds always worked well for me with a auto trans because it peaked the torque more at the launch point and at the drop in shift rpm.
Click to expand...

Makes sense, Rick. The guy I use, works the exhaust port really hard, uses a deep split pattern ,with a wider lobe center. The Nova 350 we talked about, uses a off the shelf solid , on a 114. (He likes to RPM everything, into the stratosphere. Hence, a flat tappet).
 
I want to see how the Crower performs I'm thinking of putting that in my 360, pretty much the biggest cam I'm willing to run with 1.6 rockers on my stock Magnum heads and ~.525" lift limit with uncut guides
 
MOPEkidD-3 said:
I want to see how the Crower performs I'm thinking of putting that in my 360, pretty much the biggest cam I'm willing to run with 1.6 rockers on my stock Magnum heads and ~.525" lift limit with uncut guides
Click to expand...

You have a PM sir.
 
MOPEkidD-3 said:
I want to see how the Crower performs I'm thinking of putting that in my 360, pretty much the biggest cam I'm willing to run with 1.6 rockers on my stock Magnum heads and ~.525" lift limit with uncut guides
Click to expand...

To not further dilute the thread, a PM is coming.
 
Thanks to all who have followed this thread,

The 'Crower Ultra-Beast' and components will be going in the
'Duster 340' next weekend.

The car will be at Rockingham Dragway {Rockingham, North Carolina}
on Saturday - February 14th, for testing.
 
madscientist said:
I will never understand why a 4 speed and a 3.91 gear would need a 112 LSA, or even a 110 LSA. So IMHO both cams are junk. With the stick and 3.91 gear you can use a 106-108 LSA.

It's not a chevy is it?

Call Jim at Racer Brown or Danny at Cam Motion and see what they say.
Click to expand...

Mad Scientist,

This is not what 'LSA' works best, but a 'performance' comparison between the
Comp-Cams XE-268H and Crower 269H.

Both Camshafts are not 'Junk', far from it.
 
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