Comp Cams XE270HR.......

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Biggeley

New Member

Mar 4, 2003

136

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Apr 28, 2005

#21

• Apr 28, 2005

• #21

Michael Yount said:

I tend to stay towards the milder end of the spectrum - I'm old.

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HaHa! I definitely believe there is something to your reasoning. Unfortunately that means I'm getting old as well. ;-)

 

maverick0716

Founding Member

Jan 12, 2002

3,924

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56

Chilliwack, BC, Canada

Apr 28, 2005

#22

• Apr 28, 2005

• #22

Wow, it'd been over a year since anyone posted in this thread.....and now it's back, lol.

 

jimmieB

New Member

Apr 4, 2006

4

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Jan 12, 2007

#23

• Jan 12, 2007

• #23

Back from the dead!!

Does anyone have a sound clip or video of the CompCams XE270HR idling and revving? I'm having my 90 Mustang 302 roller motor rebuilt using GT40 cast heads, Edelbrock Performer intake and Edelbrock 600cfm carburetor. Maxwell at CompCams recommends this one for me. I'll be running stock 1.6 rockers so the lift will be .512 on the Intake and Exhaust.

Yeah, bring this post back from the dead.

Thanks!
Jim

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

2,120

2

59

windsor, Canada

Jan 12, 2007

#24

• Jan 12, 2007

• #24

Eddy small valve heads with the XE270HR-12 and 1.6RRs typhoon intake. Exhaust is LT and H by mac into single chamber flows...idle is very snappy but I have no vid.
http://media.putfile.com/DYNO-93

 

Beasly B

New Member

Jan 7, 2006

165

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Virginia

Jan 12, 2007

#25

• Jan 12, 2007

• #25

I also run this cam with the 114 lobe separation, It is a 3k and above cam, after I installed my procharger it breaks the tires loose almost everytime at 3k, it sounds good at idle too. If youre going n/a then decide if you want a lower rpm cam; if going with blower or nitrous then do it. I currently run it with the combo in my sig and it kicks *** above 3k.

 

jimmieB

New Member

Apr 4, 2006

4

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Jan 13, 2007

#26

• Jan 13, 2007

• #26

Beasly B said:

It is a 3k and above cam, If youre going n/a then decide if you want a lower rpm cam; if going with blower or nitrous then do it.

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n/a only. The car will be street only. I want it to be quick from stop light to stop light. Should I look at a smaller rpm cam? Maybe the XE264HR?

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

2,120

2

59

windsor, Canada

Jan 13, 2007

#27

• Jan 13, 2007

• #27

I love mine on the street with 3.73 in the rear the car is just a blast to drive. Maybe a little soft under 2000 but as you can see with my dyno sheet in my sig the torque comes on solid after 2 and averages over 300 to well past 5000rpm...great on the street IMO.

 

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cougar5.0

Founding Member

Nov 23, 2000

354

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N.W Ohio

Jan 14, 2007

#28

• Jan 14, 2007

• #28

I just swithched to the extreme XE276HR,it has .544 lift both sides w/ 1.7 rockers,I run 1.72 so I should net .550 lift. Makes power from 2200-6200. I would call comp tell them what you have for engine work(heads,TB etc...) that is what I did and they recommended this cam. Fired it up Fri. night sounds good,idles good, snappie throttle,now I can't wait for the track to open to see what kinda power she makes.

 

jimmieB

New Member

Apr 4, 2006

4

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0

Jan 14, 2007

#29

• Jan 14, 2007

• #29

Yeah, the Extreme Energy cams seem to be a better cam (Power wise) than the Ford lettered 303 series cams. The split duration cams that favor the exhaust seem to help produce more power on the GT40 iron heads since they need a lot of help on that side.

My builder said that the CompCams are made from better material than other cams. Is there any truth to this? My builder builds dirt track motors for a living, so I trust he knows what he's talking about. He said the $100 more for the CompCams is a small price to pay for the added power and strength the cam will provide over the others.

If your budget is lower, The Trick Flow Series 1 seems to be a good alternative cam too for the GT40 iron heads.

I’m referencing the GT40 cast iron heads because that is what have and what I've been researching. These cams will probably work really well with other heads too.

Id really like to hear some sound clips or videos of your all's cars.

DMAN302, thanks for your clip…the car sounds mean. What numbers are you pulling?

COUGAR5.0, I'd like to hear your new setup.

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

2,120

2

59

windsor, Canada

Jan 14, 2007

#30

• Jan 14, 2007

• #30

numbers were corrected 317/344 after my SCt tune. You can see the graph in my sig under "Roller results"

 

aleborjas

New Member

Sep 11, 2005

610

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Jan 15, 2007

#31

• Jan 15, 2007

• #31

maverick0716 said:

That .544 valve lift spec is with 1.7 rr's. The spec with 1.6 rr's is .512

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this cam specs sais that is to use 1.7 rockers

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

2,120

2

59

windsor, Canada

Jan 15, 2007

#32

• Jan 15, 2007

• #32

aleborjas said:

this cam specs sais that is to use 1.7 rockers

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I run the 1.6's simply because I was worried the steep ramp rate of the cam would tire the valvetrain prematurely...results were excellent but yes the cam calls for 1.7rr's.

 

LXSTASY

Founding Member

Apr 25, 2000

932

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0

Long Island, NY

Nov 8, 2007

#33

• Nov 8, 2007

• #33

DMAN302 said:

numbers were corrected 317/344 after my SCt tune. You can see the graph in my sig under "Roller results"

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DMAN - what are your mods?

 

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salmanq

New Member

Nov 8, 2007

1

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0

Nov 8, 2007

#34

• Nov 8, 2007

• #34

Hi

Hi, this post is very informative; however I would like some specific information. If someone can help me then please send me a private message. Best Regards,

Property Directory | Wholesale Billiards
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Something Directory

 

lx93notch

New Member

Oct 10, 2007

24

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coventry, rhode island

Nov 8, 2007

#35

• Nov 8, 2007

• #35

im thinkin of running the same cam(xe270hr) in my motor with stock heads valves and pistons. if i use the 1.6rr's will i have and piston to valve clearance problems?
im doing this for the first time so any help or advice will be much appreciated!

 

maverick0716

Founding Member

Jan 12, 2002

3,924

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56

Chilliwack, BC, Canada

Dec 10, 2007

#36

• Dec 10, 2007

• #36

lx93notch said:

im thinkin of running the same cam(xe270hr) in my motor with stock heads valves and pistons. if i use the 1.6rr's will i have and piston to valve clearance problems?
im doing this for the first time so any help or advice will be much appreciated!

Click to expand...

This may be a little late, but with 1.6 RRs you should have no problems whatsoever.

 

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srjs28

New Member

Jan 12, 2010

69

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0

May 21, 2010

#37

• May 21, 2010

• #37

bringing this post back from the dead for the 3rd time. so any updates on this cam? i currently have this cam but not yet installed. i plan on running it with 1.72 rr, gt 40 heads, stock valves (new valve job), stock style pistons and yes heavy springs. but hesitant that it may have too much lift and cause problems and clearance issues. anyone currently running this cam with 1.7 rr's?