I think my head gasket is installed wrong

A little update. RPM went through the head and found no issues. They gave it a very light surfacing and I was ready to install it.
The builder used a rocker arm conversion kit:
https://www.summitracing.com/parts/crn-52655-16

which adapts the stock 5/16 stud to 7/16 for the new roller rockers. The consensus is that this is kind of the wrong way to do it. They also use nylon push rod guide plates. Because of the excessive heat, a couple of them had started to crack and the others were brown (left side they were still white). No problem, I'll just order some. NOPE! Not available anywhere. I even called Crane/Comp Cams and talked to a guy who said, sorry man, discontinued and NLA.
So I weighed my options. Make some out of delrin/PTFE etc on my mill. OR, do what RPM suggested and convert the heads to a proper 7/16 stud. So that's what I'm going to do. I pulled the left head today. Will take them up on Monday and update y'all with the progress.

I know a guy with an inventory of nylon guide plates as he recently converted to 3/8" pushrods.  Let me know if you still want them and I will connect you guys.

JT

Thanks JT. I'm committed now though!
I'll hang onto the good ones in case someone can use them and dump the rest of the kit.

There are more then a few people running that kit but the key is that you run it on completely stock configuration heads.

That was the point of the kit.

Engineering wise it makes absolutely no sense to add an assembly requiring a 7/16" stud and reducing that to 5/16" for convenience sake.

Many people will eventually replace the stock camshaft with a "performance aftermarket one". They generally will require more spring pressure.

Using a 5/16", even super alloy stud, will be a complete disaster.

You won't be able to pick the time or place of the failures but they will eventually begin to snap like tall trees in a tornado.

My homework says to have the pedestals milled, drilled and tapped for 7/16 studs, use proper metal guide plates and high quality roller rockers such as the Comp Cams Ultra Pro Magnum XDs.

If you think that's a mistake I'd like to hear what you would suggest.

...Roller CAM and Lifters! Don't forget the Roller Cam SPRINGS.

MJ

Thanks. This is already in there.
In deciphering the build sheet it appears to also have
https://www.compcams.com/magnu...-351c-351m-400m.html