I have a 408 with a crazy cam . When you pull off the oil fill cap, will there be a vaccum? If so what causes the vaccum??? I pull off my cap, and get a huge vaccum.. Thanks guys...

 

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I pulled off the driver's side valve cover. Yes, well, I found our little problem... #7 cylinder rocker pedistol is broken. I can't believe it. I'll call Texas Speed on Wednesday. I'm sure Jason, and Jon will take care of me.. I'll let you guys know how it goes. The motor, heads rear-end and trannt only have 5 miles on it.