Thanks for the input. The studs are a bit pricey though. I'm wondering if the stock bolts weren't hard enough and if using a grade 8 or 10 bolt with a hardened washer would work as well. Either way if I rebuild my engine, I will have to replace the head fasteners because 2 of them snapped while removing the head. The other fasteners are rusty and pitted. Is there any change in torque specs with studs vs bolts? I'd like to raise the compression just a little and don't want to worry about blowing head gaskets. I enjoy this website a lot. Alot of good info and food for thought, Thanks, 40 plyguy