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featherduster76
PostPosted: Tue Sep 05, 2006 2:31 pm 
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Can anyone reccomend valve springs for my cam? it is .550/.550-260@050.....
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Joshie225
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PostPosted: Tue Sep 05, 2006 2:45 pm 
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No, but I'll bet the cam grinder would be happy to help.

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argentina-slantsixer
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PostPosted: Tue Sep 05, 2006 4:41 pm 
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mopar SB springs for 340 w/ damper?? P/N ends with 029

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Joshie225
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PostPosted: Tue Sep 05, 2006 6:06 pm 
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That's a bit too much lift for P4120249. Mopar Performance lists max lift as .500". With this big of a cam I go with what the cam grinder says. Some modern grinds have special needs beyond handling the rated lift.

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argentina-slantsixer
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PostPosted: Tue Sep 05, 2006 6:29 pm 
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That's a bit too much lift for P4120249. Mopar Performance lists max lift as .500". With this big of a cam I go with what the cam grinder says. Some modern grinds have special needs beyond handling the rated lift.
You're absolutely right. I don't know why I did read .500 instead of .550

my bad!

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slantzilla
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PostPosted: Wed Sep 06, 2006 4:27 am 
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340 springs will handle at least a .530 lift, but I think .550 is pushing it.

On my motor we went to the next step above the 340 spring in the MP book. I was using a .558" lift/ 300* cam. :shock:

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featherduster76
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PostPosted: Wed Sep 06, 2006 4:39 pm 
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On my motor we went to the next step above the 340 spring in the MP book. I was using a .558" lift/ 300* cam. by slantzilla



Does anyone have that part #???
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Joshie225
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PostPosted: Wed Sep 06, 2006 5:15 pm 
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On my motor we went to the next step above the 340 spring in the MP book. I was using a .558" lift/ 300* cam. by slantzilla



Does anyone have that part #???
It's in the Mopar Performance catalog.

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