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Old 06-22-2007, 08:49 AM   #1
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Comp Cams Xtreme XFI 268 sound clip

http://videos.streetfire.net/video/2...5500a00cf4.htm

I got a new video camera and recorded this little clip of my 87 GTA idleing. I think it has a decent little lope to it, it definatly performs well.

Here are the specs:

355 block
Comp Cams Xtreme Xfi268 roller cam
World Sportman II heads
9:8:1 compression
Intake is HSR with 58mm throttlebody and 24# injectors
Hooker 2055 headers and hooker aero catback
LS racing chips tune
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Old 06-22-2007, 10:16 AM   #2
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Re: Comp Cams Xtreme XFI 268 sound clip

that sounds amazing
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Old 06-22-2007, 03:55 PM   #3
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Re: Comp Cams Xtreme XFI 268 sound clip

sounds good , i am sure there are others that say thanx for the sound clip . Alot of people like to hear these before buying
__________________
PROJECT UGLY DUCKLING
1989 10:1 353 L98Edlebrock base and runners ( really ported)ZZ4cam ,1 3/4 SLP shorties 083 heads ...cleaned up andstuded w/1.52 rr , LT4 valve springs and retainers and a 3 angle valve job
suspension mods (Hotchkis LCA's PH bar, KYB shocks and struts)
T-5 3.73
T-62 turbo to be installed next ...Exhaust clip ...gota let it load....
http://media.putfile.com/My-exhaust-clip
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Old 06-23-2007, 01:24 PM   #4
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Re: Comp Cams Xtreme XFI 268 sound clip

Yes, that does sound very cool! I have that same cam...waiting on headers to install it; I want to install the AFR 195's, XFI268h13, 1.6 rockers and Dyno Don's headers at one shot.
Thanx for posting the sound clip.
Bill
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Old 07-29-2007, 04:11 PM   #5
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Re: Comp Cams Xtreme XFI 268 sound clip

Why does that cam have more lope than a CC305?

It's a smaller cam with less overlap, right???
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Old 07-29-2007, 07:04 PM   #6
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Re: Comp Cams Xtreme XFI 268 sound clip

I would say it depends on where the idle is set at.
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Old 08-01-2007, 10:57 AM   #7
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Re: Comp Cams Xtreme XFI 268 sound clip

Quote:
Originally Posted by MedVader View Post
Why does that cam have more lope than a CC305?

It's a smaller cam with less overlap, right???
It has less .050 duration but almost the same .200 duration so, the XFI has the aggressive lobes that make it sound so mean. I have the 274 XFI in my 383 with 10.6:1 compression.
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Old 08-24-2007, 02:14 PM   #8
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Re: Comp Cams Xtreme XFI 268 sound clip

What was the engine idle speed set at during that sound clip? By the way, how happy were you with the LSR Tune?
Bill

Last edited by Burnout91; 08-24-2007 at 02:17 PM.
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Old 08-24-2007, 02:34 PM   #9
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Car: 87 GTA, 67 RS, 92 RS
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Re: Comp Cams Xtreme XFI 268 sound clip

around 750, overall I was happy with it, it had some bucking around 2000 rpm cruising though.

Last edited by battman; 08-24-2007 at 02:38 PM.
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Old 08-24-2007, 03:08 PM   #10
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Re: Comp Cams Xtreme XFI 268 sound clip

Nice! That sounds like a 3" exhaust. Below is my XFI-268 in a different car. I have AFR 180 heads in a 355 10:1 with roller rockers, 52mm, AS&M runners, Edelbrock base, ported plenum, shorty 1 1/2" headers and 2.5" exhaust.
304hp/366tq to the wheels.

http://www.youtube.com/watch?v=mZsO_jbx3ZY
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Old 08-24-2007, 03:08 PM
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