you can or grind one of the inside ribs of the all 6 of the 12v valve covers and they will fit

Leave the head on so you dont have to buy a head gasket. Take a stock stud out and replace with the new stud and torque it to 90 pounds. Then after you have changed all of them in sequence. You need to torque them to 110 then 125 or whatever htey say in the instructions. Then drive it around and get it hot pull the valve cover back off and retorque to specified

is that true with the arps as well? the arps require pedestal milling on all 12valves they say but i guess they dont have a problem with valve cover clearance. the a-1 studs dont require the pedestal milling but theyre the ones that supposedly have the valve cover clearance issue.

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very good explanation:tu:

Matt and i helped our buddy vinny do a set of arps on his 12 valve and we had to grind the webbing out of the vavle covers. To get them on. Thanks i tried to expain it as easy as possible

did you get the pedestals milled down as well? or is that just rumor?

I believe they updated the studs so you don't have to deal with that now, but I don't know for sure.

no milling required. you are correct about milling the pedestals being the correct way :tu: I have done this as well but you can get away with a little grinding and cleaning for someone withought a mill.:rocking: I havent tried a1 studs but might look into them now

A1 Tech. makes the stud but Haisley Machine sells them.

so head studs are easy to put in? i am looking into buying the head studs from diesel pap those are a easy install?

just follow torque specs thats the important thing. the wrong torque ratings or wrong torque pattern can cause a disaster. just follow the instructions and the torque sequence, and you should be ok