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Odd BBC valve springs. Any idea what they are?



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Old 06-13-2011, 07:18 PM   #1
Gonzo Wheeler
 
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Odd BBC valve springs. Any idea what they are?

I've built quite a few BBC's and have never seen anything like this. I picked up a 454 this weekend that has 045 heads. I don't know much about the heads and even less of this type of valve spring. There is a single spring with the outside sleeve. Any information is greatly appreciated. Sorry for the upside down pic.

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Old 06-13-2011, 07:43 PM   #2
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I have no information but mine are the same as those. Used motor, no clue. I thought it was normal.
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Old 06-13-2011, 11:21 PM   #3
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My only guess is that the cup is to keep the spring from bowing out while it compresses. Never seen it before either.
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Old 06-13-2011, 11:24 PM   #4
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Old 06-14-2011, 07:15 AM   #5
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Sure thing Justin, if you can out run a .45, you can have it.

I'm curious how much lift they can handle being a single spring. They aren't beehives, so I doubt they will handle much. I still need to pull the balancer and timing cover to figure out what cam it has currently.
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Old 08-24-2011, 07:58 PM   #6
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those look like comp retainers and locks, ive seen alot of those shield things come off newer bbc heads, the tbi motors especially, i wouldnt go over .500 lift cam if you are gonna put another cam in it though, most double springs dont go much over .550 cam on a flat tap setup. hope this helps ya some
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