440 source

Old Man Mopar said
I have a 2-year old set of 440 Source Stealth heads still in the box.
I plan to disassemble them and take them to Modern Cylinder Head
for their CNC porting, then reasemble them with the Comp #26120
beehive spring and steel retainer package.

I bought a set of Pro-Comp Electronics stainless steel roller rockers
(1.5) from Jegs.

This is going on a freshly assembled 440 + 0.30 short block with KB
flat tops on Eagle H-beam rods and a Comp .484 hydraulic flat-tappet
camshaft. Holley Street Dominator with Holley 750 double pumper and
a 4-speed.

Any other preventative measures anyone would suggest before I get
too far?

Still has the original CPPA headers. This is a steet car.

Thanks

Yes, get rid of the pro comp rockers. Especially if you are running the 484 PurpleShaft, just use stock rockers.

I put source heads on my 440. They seem to have some hand clean up done to the bowls after machining now, and from a few reports seem to flow a little bit more than a few years back. My heads came with comp 7 degree locks and retainers, and the springs are pretty good for your typical performance hydraulic. I am running double springs so I went to 10 degree locks and retainers. Heads looked good, one thing I will say though is I did find aluminum shavings in my valve guides when I took them apart. A quick hand lap showed that the valve job looked good.