Titanium studs

Just as there are different grades of steel bolts there are also dofferent grades of stainless. If you're replacing a grade 5 steel bolt with stainless, be smart enough to do some research and use the same grade or better in stainless. "Research" means more than just asking for an opinion on Moparts!

Someone meantioned tensile strength. It doesn't take anything more than a calculator to figure out that if you use a big enough grade 3 bolt it will outperform an smaller grade 8! So where possible, increasing the size can solve your problem.

In your case the majority of the force will be in "shear". What's important is the fit of the motor plate and the hole size. If the bolt holes are sized properly to the bolts and there's no side movement then the clamping resistance of the water pump, block, etc. will all contribute to the strength of the coupling. But if there is slack in the bolt holes then all bets are off. With three bolts per side in the block and everything fitting properly you could probably use grade 3 bolts in there and they would never be a problem!

They used to attach the engines in top fuelers with hose clamps on hte frame rails; there isn't that much force that it would require anything special. I have used Stainless ARP bolts about everywhere in our aluminum engine. Neverhad galling problems, but they tend to loosen every once in a while, mainly intake/exhaust/oil pan bolts. Don't know if that's because of the material or something else though.

I use regular Stainless Bolts. I hate the steel bolts because they rust and look terrible after a couple seasons. There is an awsome hardware store in Westerville called Roush they have one of the best hardware selections I've seen locally.

...stainless steel is just mild steel with nickel added for corrosion protection.
nickel is soft
buy your fasteners according to their rating. this will be stamped on the head 3 marks for grads 5, 5 marks for grade 8 etc.
you can get a grade 8 stainless steel bolt..the base steel would have a high carbon content for the grade 8 rating(making it very hard and strong)the nickel will just make it corrosion resistant.
hth.........al