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Author Topic:   cam ramp profile
Dubz
Gearhead

Posts: 443
From: Manitoba Canada
Registered: Oct 2002

posted 04-15-2003 03:42 AM     Click Here to See the Profile for Dubz   Click Here to Email Dubz     Edit/Delete Message   Reply w/Quote
in my planning for my "perfect engine" i'm looking at the 270H as well as the XE268H. both have the same intake duration at .50 but the 268 has .01 more lift and is also tighter advertized.

This increase in ramp speed on the intake, that is a good thing right?

Which would be better, the single pattern or dual pattern??

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steve'66
Gearhead

Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000

posted 04-16-2003 12:26 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Six of one and a half dozen of the other.

SteveW

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Mpcoluv
Gearhead

Posts: 945
From: Charlotte NC usa
Registered: Apr 2001

posted 04-16-2003 06:38 AM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Dubz:
in my planning for my "perfect engine" i'm looking at the 270H as well as the XE268H. both have the same intake duration at .50 but the 268 has .01 more lift and is also tighter advertized.

This increase in ramp speed on the intake, that is a good thing right?

Which would be better, the single pattern or dual pattern??


Try to find out the duration at .200 lift.
I would imagine that the XE cam has a little more duration at .200

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n2oMike
Gearhead

Posts: 1547
From: Spencer, WV
Registered: Jan 2001

posted 04-16-2003 08:09 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
If memory serves, the 270H is the 270 magnum, and measures 224 @ 0.050" on both intake and exhaust with a 110 degree lobe seperation.

The XE268H is a split duration unit, with more timing on the exhaust, and the same 110 lobe seperation.

The Xtreme Energy unit is a more modern grind, and is probably a bit more aggressive. I believe it has more lift as well. Go to www.compcams.com and click on their online catalog to check the complete specs of their cams.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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Dubz
Gearhead

Posts: 443
From: Manitoba Canada
Registered: Oct 2002

posted 04-16-2003 01:29 PM     Click Here to See the Profile for Dubz   Click Here to Email Dubz     Edit/Delete Message   Reply w/Quote
i've been looking at the cataloge that's why i'm asking the question!

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