Biggest mistake ever- lunati cams

MerlinsMopar said
I started this thread about lunati's horrible tech, and pairing the speedmaster 3048 heads. Problem was installed spring height was way off.
With these aluminum heads, it was way off. .110-.120.
The spring pockets need a steel seat and they can be shimmed. It should be done by the machine shop if they are paid to set up your heads in the 1st place. I checked each spring for tension at height on a rimac spring tester and they were all in spec but the retainer to pocket was off and shimmed each one according to the installed height.
I liked the lunati cam specs also and only wanted to ask them a simple question, which was basically impossible. I was looking for another spring to fill the gap and that was a big headache which was like hitting the lottery. I really didn't like shimming that much but the pockets were plenty deep and once I got assurance from a machinist, that's what I did.
As for the dual springs during break in, if the cam wipes a lobe at that low of a psi, it was no good to begin with or as stated, the lifters aren't spinning. High spring pressures need addressed tho. Each individual has to make their own decision and I have made mine. The machinist has broke in lots of lunati cams and never had an issue with it so I am following his knowledge even tho I want to follow the cam recommendations. Once I get the motor fired up, we will see.
That was my answer to my questions and I hope it helps others.

I will say this and then you will do what you want.

The margin for error breaking in a cam is very narrow. Anything you can do to get the window open wider is cheap and easy.

Spring pressures, even as low as yours are are not the only consideration.

It doesn’t take long to remove the inners (or not put them in when the heads are going together) and it takes maybe an hour to install them after break in.

There is a reason why guys use lower ratio rockers, take the inners out and go through all the machinations they do to stack the odd in their favor.

You can do everything right and still lose a lobe. Maybe the lifter bore is on the loose side and any extra spring load may inhibit the lifter from rotating. And if that happens it will damn sure go flat.

You are working with 45-50 year old blocks. They move around. Unless you are bushing the lifter bores you are dealing with what you have. They may not be (and probably aren’t) in perfect shape, let alone being on the low side of tolerance.

You are closing the widow tighter by not removing the inners.

Saying if the cam goes flat means it was junk to begin with is very myopic. Yes, it happens. But skipping a simple process to add to the likelihood of success is bad policy.