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07-02-2018, 08:25 PM | #31 |
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Re: Valve Spring Pressure - BBC stocker
Your guides are tight when you put heat in the thing. Mic your stems then ream guides with a reamer .0025-.003.
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72 cutlass |
07-03-2018, 10:40 AM | #32 |
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Re: Valve Spring Pressure - BBC stocker
Just my 2 cents, based on personal experience.
I too, have been victim of this very same issue... difference being, I didn't learn after the first time it happened. Took two more incidents... which is why I haven't been on a track for almost 6 years. in short After providing my lobe number to my Comp Cams rep... his response: "YOU CAN'T REV THAT LOBE" ! me: "THAT'S WHAT I'VE BEEN TRYING TO TELL YOU" ! Yes, there ARE lobes that can't be controlled at RPM... "torque lobes", as they were described to me.
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Aubrey N Bruneau 6409 C/S 62 BelAir sport coupe, 409 HP 409 |
07-03-2018, 06:43 PM | #33 | |
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Re: Valve Spring Pressure - BBC stocker
Quote:
I remember trying to work with you on that. And that was my first thought on this thread.
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Alan Roehrich 212A G/S |
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07-03-2018, 07:51 PM | #34 |
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Re: Valve Spring Pressure - BBC stocker
Yes, Alan... and you definitely DID help !
I went with spring specs you recommended, and actually designed my own intake lobe variation of what I had. All good now, and seems to run better than it ever did.
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Aubrey N Bruneau 6409 C/S 62 BelAir sport coupe, 409 HP 409 |
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