Mopar Stage VI 6 heads questions

rumblefish360 said
I hate to sound like a dick & I don’t want to come off as one, but here but here we go…..

Your 1st question was very general, general answers given.
Your second question was a little more focused but it’s still in a wide open field. So I explained it.

Your third question is more focused but still in a big field.
I’ll answer it in a second. First! What are you planning on doing with the heads?
Will your application need standard length valves or longer valves? What length do they need to be or will be?

Moving the rockers upwards is easy. Moving them front to back, (towards the valley or towards the exhaust side) or whatever is harder. This maybe needed depending on your valve lift, spring height and ultimate goal. We have no idea of what that is.
I do realize you’re looking for information and I’m happy to answer what I know. Which isn’t a heck of a lot on these heads.

Keep asking questions!

The suggestion to take to a head guy/machinist is an excellent one. What you could do is get to stock valves and used springs and a valve seal, etc…. Set up 1 valve and check it with a mic. This you could do at home if you have a mic and such tools.

Do you have experience worked by on cylinder heads at all, as in setting them up?

lol. I don’t think you are being a dick at all. As far as head work experience I have done steel heads in the past. I have my own equipment to do valve seats and valves. I have done port jobs on 906 heads using Mopar templates. I have not done anything in 15 years and just getting back into engine building. Everything I have ever done was for my own stuff and I try to use what I have because I have never had the money to do a big budget build. I do however have a big selection of Mopar big block parts that have been accumulated over 50 years by my family. These heads are my first aluminum heads.

Ok to get more specific question I was asking is if I use stock length valves, retainers, keepers and rockers what lift can these heads take? What I was thinking was at some time when the heads were marketed as using all stock parts that they would have listed the maximum valve lift with stock parts. I guess I was thinking along the lines of when I was working on 906 or 452 heads when I wanted a cam bigger than.550 I would have the valve guides cut down and maybe the spring pocket cut down.

After seeing a couple replies on here I’m thinking that the offset rockers would be for the max wedge port design that was offered in this head. Mine are standard port design but I didn’t want to assume that stock style rockers would work.