So for my 400ex build I purchased Curtis sparks heavy duty valve springs (not yet installed). Something I'm curious about is will the HD springs make the engine rev slower than it would with stock springs or any other kind of valve springs?
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Registered User
So for my 400ex build I purchased Curtis sparks heavy duty valve springs (not yet installed). Something I'm curious about is will the HD springs make the engine rev slower than it would with stock springs or any other kind of valve springs?
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