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What size Power valve for use with the Xe274 cam?

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Old Nov 26, 2002 | 10:54 AM
  #1  
zupmanZ28's Avatar
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
What size Power valve for use with the Xe274 cam?

I know theres couple of you guys running the xe274 cam with a demon 750 or something similiar, so i'm wondering what size power valve you guys are using? My cam should be here tomorrow so i'd like to go get one and install it before i start the car with the new cam in it.

Also, where can i get squirter assortments? I looked in Jegs and Summit but the only kits i found had all sorts of crap in them and they were like 98 bucks.

Thanks,
Eric
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Old Nov 26, 2002 | 12:46 PM
  #2  
onebad82z's Avatar
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From: Orange County,NY
Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
My motor with the XE274 pulls 11.5-12" at hot idle so I went with a 9.5" power valve.Squirters can be bought at any local speed shop but Jegs and Summit does carry them.They usually go for around $10 a pair.
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Old Nov 26, 2002 | 12:52 PM
  #3  
zupmanZ28's Avatar
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
thanks for the info...
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Old Nov 27, 2002 | 07:43 PM
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RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
I ran a 9.5 in a Holley 800 on a 400 with that cam, seemed like it could have used a 10.5.

In a 350 stick car I'd start with a 7.5 and go from there.
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Old Nov 30, 2002 | 06:31 PM
  #5  
Pony Killer's Avatar
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Joined: Jul 1999
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From: Atco, NJ, USA
Car: 1986 Z28
Engine: 355
Transmission: th400
i'm runnign that cam with a 780 holley vs.
i'm running a 65 pv in the front, and none in the back.
to be honest i haven't put a vac gauges on it yet, but the power brakes work with the 235k mile booster so it's gotta have at least 10.5

anyways after the first 300 miles i'm just staring to get it nailed down. I live in the flat lands of south jersey so trying to give it a load on cruise is a bit tough, but so far the 65 is working fine.
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