Yes, the stock spring Eheads are good for up to .575 lift at valve. I have 1.5 roller rockers on my engine now. That cam would work out to around .488 - which is what I have in there now. (.488/.510 234/244* ) I dont think it is enough for a 416? Or is it?

It is very streetable in my 340.

However, it did stall out at a stoplight the other night.... was stopped for about 2 minutes waiting for the arrow, and it stalled - fully warmed up - carb idle not high enough maybe? its around 600 +/-



my guess is a cam like that will give ya 12-14" vacuum at idle, maybe more in a 4" stroker combo....with your eheads, I'd look at the new HEH 3742 AL or HEH 4246 AL from hughes...they might even idle more mild than your current cam on a 3.31" stroke does...

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