Originally Posted by littledcsrodshop

I agree on the not wanting to run it at that RPM without a load on it causing the washdown...

Please don't think I am disagreeing with you on the spring pressure issue because as you already know I hold your experiance , reputation , opinion & help in high regaurd... But I am curious as to not worrying about the spring pressure issue ? I am not one of those people that believe everything I read or hear & I know that the cam companys like to cover there butts esp. with the issues they have had over the last few years... I just know that I have always heard & followed that aound 120-130# on the seat was the cutoff for break in... Just courious as to your thinking behind that ? & like I said your opinion is held high & thats why I am asking... I am always willing to learn , esp. from good sources !!

Originally Posted by jeff1000man

I always learned that it was the open pressure that is the killer, but I would like to know what Dean has to say.

Originally Posted by littledcsrodshop

Same here , I believe that its somewhere around 320# orso on the open that most recomend as max & that was my main reason for looking for the low ratio's b/c it would keep my preasure below that during break in.

Originally Posted by jeff1000man

As long as you flatten it out before you put it in the boat, you can always cahnge it.

Originally Posted by littledcsrodshop

Like to think ahead huh !

Just cheacked & my pressures are 140 on the seat & 330 open

Originally Posted by jeff1000man

I've got one that was broken in on 150 seats. and after a couple hours I am running it on 190 seats and 500 open.

Those cams are a lot more resilient than people give them credit for.

I have found that it is most often the camshaft being defective.

I can only remember 1 in the laast year out of anyone that I know that uses them that has killed one. And that was me.

Had a bad carburator and couldn't get the thing to run until it was to late.

You'll be fine.

Originally Posted by littledcsrodshop

Thanks , That does make me feel a bit better. Like I said I have never had a problem but I just wnat to make sure I cover all my bases...

Btw : You have a sweet magnum , As you may already know I am a huge fan of the classics myself !