FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: 67428GT500 on June 07, 2019, 07:30:23 PM
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The Edelbrock heads I bought have a spring spec of 130 on the seat and 335 @ .600.
I put my cam card up to see what the peanut gallery says about use of the single spring with my cam.
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The springs are up to the task for that cam.
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What valve stem diameter, head size, and retainer used? Stock Edelbrock stuff? When I checked the last couple of sets of Edelbrock Performer RPM heads, the springs had 140-145# seat pressure which was needed. I don't think 130# is enough for a 3/8" stemmed valve and .560" lift. JMO, Joe-JDC
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They are .380 stem. I am changing the 2.09/1.65 valves with 2.19 INT 1.75 Exh. The specs are for the Edelbrock springs for non-roller cam applications. The specifications you provided DD is for the roller cam ready heads. I am hoping they don't really need to be changed. The springs on the C6AE-R I have now are about 140 on the seat and 365 @.0600. I have sold the C6AE-R heads to a forum member so I will have to pull these if they aren't enough for the cam to be safe to at least 6K
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Pretty lazy hydraulic flat tappet. It will be fine, but if it's a new cam that hasn't been broken in, I would use another spring.
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It was ran in on a heavier double spring. I was debating if the springs are weak. So what is a matter with the profile?
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It was ran in on a heavier double spring. I was debating if the springs are weak. So what is a matter with the profile?
Nothing wrong with it, it's just a lazier lobe, so it doesn't need a lot of spring pressure.
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Plenty of spring