How well will this cam work?

Lift 0.590 intake and exhaust
Advertised Duration 312 degrees
Duration at 0.050 265 degrees
Valve overlap 104 degrees
Lobe Separation Angle 106 degrees

Going to build a 420" or bigger small block. Will be using some ported Eddys on a stock block and don't want to wind it to the moon. Goal is mid 10s at around 3000 pounds.

Thanks!

Depends on your definition of "wind it to the moon".

That sounds a lot like the old purple-shaft .590 and with only 420" you will need some RPM. I'd go a bit smaller, but that's just my

I would like to stay under 7000. I also have 1.6 roller rockers, I know that changes things some too.

ok... you should be able to make plenty of power and stay under 7000! Thought you might be looking at a redline under 6k or something.

Make sure you check p/v clearance carefully with 265 @ .050 and 1.6 rockers too...

Is it the purple shaft or a "modern" design?

Purple shaft. It's been in the for sale section for awhile.

I have a couple sets of NOS Mopar lifters, should be good in that department.

Thanks!

mopar 590 cam...duration is actually 272 not 265.

I ran that cam in my street/strip '71 Cuda 340 and thought it was quite mild on the street, had a 4200 conv and 4.30's in it though, maxed it at only 6300 on the track, worked well and made 365hp with stock CR and unported 2.02 heads, its nowhere near what you have so exactly how it would behave with ported Eddies and 420ci?...in a word "Tame" but a good choice with .629" w/1.6 rockers less a bit of lash etc., I'd go for it for what you want.