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Old 06-24-2004, 06:37 PM
MI2600's Avatar
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Xe274

Anybody running a Comp XE274?

The reason I ask is I have a 383 and I'm using an L79 (222 dur and .447 lift), with about 9.7:1 compression. It just doesn't seem to have the power I expected.
I've got an XE268 in my 406 and it pulls strong.
I was thinking of swapping an XE274 into the 383 (std trans).

Thoughts? Comments?
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Old 06-24-2004, 07:21 PM
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what are some of the other motor specs?
heads etc...
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Old 06-24-2004, 09:27 PM
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That 274 pulls late. 4000 rpms and above.... the 274 is a GREAT cam. Before 4000 rpms ....it`s a dog. Been there, done that. You hear alot of guys talking on timing and tuning that cam but as far as I`m concerned, I would sell it again. If you stick with the 274 you need 3000+ stall and high compression ,good heads. Your better changing the combo.

Do a search on this. This has been asked a few times.

As for the choppy sound....the 274 sounds great! Huge rump!!! Sounds like a Harley.
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Old 06-24-2004, 09:32 PM
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I have that cam in my Olds 455. Pulls good as posted above at higher RPM. I am going with something else because in a street vehicle it just doesn't have the low end umph!
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Old 06-24-2004, 10:58 PM
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I have a XE284 in my 406, got plenty of torque down low. Currently using a 2800 rpm converter. Sounds like a race car and it idles for ****** when it's cold though. I suppose it works well, gets me down the track in less than 13 seconds off the bottle.

Larry
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Old 06-24-2004, 11:26 PM
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good cam...go with something else

I have the xe274 in my 351C, it sounds great and pulls hard above 3000. I had it and a pair of 4v heads before I put the 2800 stall in, needless to say I could have probably out run it on foot the first 60 feet.

I would go with something a little less wild if you going to be on the street a lot, Plus you would want a little more compression to really see the benefits of that cam. You could always call up comp cams and talk to one of their tech guys, they could pick you out a cam thats right for your combo.

good luck.
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Old 06-25-2004, 08:04 AM
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probably depends a lot on what motor you're puttin it in. A 350 would be pretty lumped up by that cam on the street, but I think it would be a perfect choice for a 383 or larger motor. Power on that cam goes till 55 or 5800, what you want for the street-

K
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Old 06-25-2004, 08:33 AM
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The 383 is in the '67:
462 heads with 2.02 X 1.6 valves;
9.7:1 static compression;
GM dual-plane, Winters hi-rise intake;
Holley 3310, 750 cfm;
Corvette 2 1/2" rams horn exhaust;
2 1/2" dual exhaust.

Comp Cams says the XE274 range comes in at 1800 rpm and you can use a 2200 stall, but I'm standard trans. My current L79 comes in at 2200 rpm.
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Old 06-25-2004, 08:42 AM
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4 speed, that a whole new ball o' wax. Stuff it in there and enjoy the rumble.

Larry
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