Can the dual coil valve springs on a BB destroy Valve guide seals - Hot Rod Forum : Hotrodders Bulletin Board
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Old 11-25-2003, 04:27 PM
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Can the dual coil valve springs on a BB destroy Valve guide seals

Some dude at work claims that if one installs dual coil valve lifter springs on a BB. The springs will destroy the valve guide seals. Any truth to this claim

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Old 11-25-2003, 04:45 PM
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Yes, on the OEM BBC heads you have to cut down'
the guide bosses for smaller seals. Also you need to
use a spring locator seat to properly control the spring
on the head.

Cstraub
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Old 11-25-2003, 05:49 PM
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Last edited by Greg Latvala; 11-29-2003 at 02:26 PM.
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Old 11-25-2003, 06:03 PM
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Of course, early hemis came with dual springs and hardened seats from the factory so this isn't an issue!
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Old 11-25-2003, 06:23 PM
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Dam!!! I hate when that dude at work is almost always correct.

I would also like to say thank-you for the info I will pass this on to the guy I sold the 73 454 vette to, he called me complaining that the Vette was going through 1 quart of oil every 500 miles. When I installed the 272 cam. I did upgrade the springs to the dual coil and to roller tip rockers. I guess I will pay for the installation of a new set of valve guide seals.
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