just checking in with members who use the Mopar Stage VI heads.
have you had any issues with the valve stem design how the spring seems to be floating in oil & the valve stem seal has to be perfect or it leaks down the stem & gets sucked into the intake?
i've had a few sets of Indy heads but i now have a set of Stage VI's that came on an engine i bought. i had an issue with the RH bank smoking a bit & traced to the valve stem seals had come loose which allowed oil to leak down the intake valve stem.
to fix it i got creative with the die grinder & reshaped the area around the valve spring seats so the oil could escape quicker. has anybody else done this? i'm kinda at a loss to understand why someone would design a head like this, but i'm sure what i've done will reduce the chances of a recurring failure. also everytime i removed the valve cover, oil would instantly dribble down onto the headers, what were they thinking?
they started looking like this...

bit of a grind later they looked like this...

with a bit of a tidy n some polishing they finished up like this.,,,

We have to do the same thing on the SB W-5 heads

did they have the same idiot designer?

the castings were designed for a longer valve. the machining to make them fit standard length valves is where the problems start to happen. Pretty much anyone assembling these heads does that before they ever make it onto an engine. Whoever you got it from should have known better. The raw casting has much more potential than the machined version.

Lap the valves, it will show up any faults with seats/valves not being concentric. My

I had a set before my B1's.
They were done by Don Studley.
Precision Cylinder Head in So. Cal. (R.I.P. DON)

Don was an awesome cylinder head guy, especially Mopars.

When I took him my set of Stage 6's he just laughed and said
" What do you want me to do with this sh!t"??
I asked him to do his best..
Well, Don did.. Cussing all the way through them..
He put longer valves in them so the spring pockets weren't so deep . He also cut drain backs in all of them to fight your same problem.
Don got 360 cfm out of these on
his stingy bench.
My ET's were in line with the possible HP with these heads.
9.20's @ 144 in Phoenix at 3000# and a glide.
As one poster said. These heads can be made to work well in the right hands.
He also cut the rocker stands down to use Max Wedge style aluminum blocks to get the best geometry..
These were Max Wedge ports.. 502" low deck.

Wish I still had them and Don was still here too.




Chris..

hummm next time I have the valve covers off I'll have to look and see if mine were cleaned up like that. However I can let the car sit for weeks/months and I get no "crop dusting" Looks nice

I cut several notches in mine which helps to get the oil from the pocket but the entire head still has a bad tendency to fill up with oil and smoke at times. Next time its apart , some external drain hoses or maybe even a dry sump system will be installed to control it.


Hutch

Don't mean to hijack, but anyone have any chamber pics for their stage 6 heads?

Thanks, Jeff

I just ground notches into the pockets so the oil drains out. I have never had any issues. These heads seem to be working ok for me. I am happy with the performance.

don't try to run harland/sharp rockers on them. No standard valve cover will fit over them.

Harland Sharps here, no problem with these covers

By the way they are max wedge. Here's the casting number.

Yep. Had to use fabricated covers with mine to. Standard stamped or cast ones wont fit.