Head Studs

[TOM REED]

I have a Head gasket problem on my 3406E C15 Cat engine. This engine has 3.9Million KM on it and the head bolts have been reused several times. The engine run abt 700 HP to the ground and abt 50 or 55 lbs boost under load which greatly improves compression, efficiency and horsepower but increases stress on the head bolts (prob why I have a gasket problem). When I do the repair I would like to replace the head bolts with studs. Does anyone know who possibly makes a stud kit for this engine? I have already sent for a catalog from ARP but it looks as though they only make kits for gas + smaller diesels. If I can't buy a set I could make a set but what material should I use? Would 4140 pre hardened or stainless be good enough or would I need to use something else and have it heat treated. I don't mind this route as I could then use coarse threads as on the bolts in the block and fine thread in the head for the nuts which should give better torque values. Also when talking nuts and torque I only have 2 good nuts hihi but what should I use for nuts and torque specs? I will also be cutting the block and setting cylinder protrusion to max to assist in sealing the genuine cat head gasket as this is the best available for this engine at this time. tom

Only knowledgeable should reply, I posted this on PM and some of the responses were from blowhards without a clue.