My doomed 408 build

race season is 2 months away.

Click to expand...

Was this built to be a bracket race type motor?
I don’t know what the first cam that failed was, but the as supplied springs aren’t suitable for anything hyd roller, other than maybe a stock replacement type cam.

I doubt this had anything to do with the collapsed lifter........ but it would be interesting to know how the conversation went with regards to how the engine would be used....... and then the thought process behind retaining the as supplied springs when the decision was made to swap to the HR cam.

I can’t imagine those little springs would have survived very long trying to maintain control of the now heavier valvetrain with repeated high rpm use.

What was the original cam anyway?

Is the current problem lifter “soft”, or “stuck”?