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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Comp Cams XFI 242/248

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Old Apr 14, 2006 | 12:12 AM
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Default Comp Cams XFI 242/248
I was wondering if anyone has already had any experience with comp cams new XFI cams but more in particular with the XFI 242/248. If so what kind of numbers were you making with it and what are ya'lls mods along with the cam.

ANY FEEDBACK WOULD BE GREATLY APPRECIATED,
1SICSS THANKS
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Old Apr 14, 2006 | 12:40 AM
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Good luck, I couldn't find any info on these cams. I finally found one guy running the 280XFI and bought it instead of the XR282HR on a 112 LSA. They've been out since late '04, and still no info.
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Old Apr 14, 2006 | 07:08 AM
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I just installed a 280 XFI, and like you I have not been able to find anything on the XFI series.

Mike
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Old Apr 14, 2006 | 12:32 PM
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FWIW, the RPM range that the specs of that cam are made for and the lobes don't go well together. It would be really hard to control the valves to get any benefit out of that.

Bret
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Old Apr 14, 2006 | 12:37 PM
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Originally Posted by SStrokerAce
FWIW, the RPM range that the specs of that cam are made for and the lobes don't go well together. It would be really hard to control the valves to get any benefit out of that.

Bret
Does the same go for the 280XFI? 230/236 .594/.588 (1.65) 113 LSA
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Old Apr 15, 2006 | 08:29 PM
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Originally Posted by 91Z28
Does the same go for the 280XFI? 230/236 .594/.588 (1.65) 113 LSA
I hope not, since that cam just arrived at my house on friday.
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Old Apr 17, 2006 | 10:20 AM
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That is setup for a lower RPM range so the durations work better with the max speed you run... so your not as bad as the larger 242/248 cam.

Bret
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Old Apr 17, 2006 | 10:59 PM
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GMR Speed installed the 230/236 XFI cam into a 383ci with only a few mods, and stock heads. The car made 365rwhp and 395rwtq. The car idled perfectly after installing the cam (tuned of course).
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Old Apr 18, 2006 | 03:44 PM
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Originally Posted by SStrokerAce
That is setup for a lower RPM range so the durations work better with the max speed you run... so your not as bad as the larger 242/248 cam.

Bret
I'm looking to make peak power 6000-6200, I guess time will tell if I fucked up or not.
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Old Apr 18, 2006 | 05:13 PM
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I'm doing the 233/239 XFI and hope to be making 355rwhp cam only. Car made 304/343 Lt's and pullies with no tune. yeah it's a freak
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Old Apr 18, 2006 | 05:48 PM
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Originally Posted by DroppedM6Z
I'm doing the 233/239 XFI and hope to be making 355rwhp cam only. Car made 304/343 Lt's and pullies with no tune. yeah it's a freak
233/239? Are you figuring the numbers after using 1.7rr?
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