Valve spring question for cam break in

[wyrmrider]

Chevy .842 XE 268 has same seat duration as stock non HP Mopar 260- but more Intense
very similar to the MP 260- which is a better cam for a MOPAR
that said it takes more spring than the MP 260 cus it's working harder on less lifter diameter
will be interesting to see what you come up with a break in spring
STock HP springs (red with dampner) you would think would work

 

[Cartel]

I am considering the 268 cam and the 911 springs on my 383 build. I have 516 heads.
Can the spring pads be ground to make 1.90 height? does this effect the stock pushrod length?

Valve spring installed height

Ok folks, I just picked up a set of Stealth heads from 440 source. My first go around with aluminum heads. I’m preparing to install my springs and they call for 1.90” +/- .020 installed height. After measuring one head I’m getting variances from 1.860”-1.878” Now by my calculations they all...

www.forabodiesonly.com

I half answered my question.

 

[PRHeads]

Application matters, but for a BBM with stock heads, an alternative to the 911 if you don’t have the height -
Trick Flow TFS-16839 are a better match for the shorter installed height.

Howard’s 98515 is another option.