Just curious, I'm running the Black Mamba cam, stock rockers (1:1 ratio) & all new SS valves, retainers, lash caps & 26 pound springs. Did a test pass today & at 6880 rpm it snapped a spring on the exhaust side. Fortunately, it didn't suck the valve & I've replaced the spring with an older one (another 26#), set the lash & buttoned it back up again. I'll put the engine back in tomorrow & fire it up again.
Question; does anyone know if there's a problem with these 26# springs that anyone knows of out there? I'm wondering about the intake side now, could be just a fluke, poor heat treat or a bad piece of wire it was wound from. Don't want to replicate this one, as I dodged the bullet again but sooner or later luck can run out & I could destroy the motor.
Question; does anyone know if there's a problem with these 26# springs that anyone knows of out there? I'm wondering about the intake side now, could be just a fluke, poor heat treat or a bad piece of wire it was wound from. Don't want to replicate this one, as I dodged the bullet again but sooner or later luck can run out & I could destroy the motor.