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10mm x 1.5
The nut should be a 15mm, the stud, I'm not sure.
There should be a stud (not a bolt) threaded in to the head and the stud should have a thread sealant applied to the threads.
You can purchase a Haynes Manual and it will help you with the exhaust and much more.
Are you asking about a wheel stud or exhaust stud, please clarify
The type of drill bit used to remove a broken manifold stud is an extractor or easy out. A hole is drilled into the stud and then the extractor is used to dig in and unscrew the bolt.
The first step is to remove the manifold. If the bolt is sticking out, remove with a vise grip pliers or stud remover. If broke off flush, drill and extract with an easy out or try to weld a nut to it and turn out that way.
20 NM (15 lb-ft) for the nut on the exhaust nut-to-head-stud. Good luck getting a torque wrench on each and every one. Expect to rely on your 11 mm offset wrench and your gut-torque-meter.
The bolt pattern is 5x5. The lug nut size for the stud thread is 14mm x 1.50
Find where the exhaust bolts up to the motor aka the exhaust manifold and follow it about a foot towards the back of the carand you'll see a stud sensor with an electrical connector threaded into the exhaust right before the catalytic converter on both sides of the exhaust and one right after the catalytic converter on each side ,so 4 in total.Hope this Helps
Be sure the heads and manifold bolt patterns match. If they do not match you'll either have to find a set of heads that have a matching bolt pattern or look for a set of exhaust manifolds that have a bolt pattern to match your heads. I speak from experience as I once had to change over my exhaust manifold for the very reason that the bolt patterns did not match up. redneck72 - you may need a manifold strethcer... when changing the manifolds on to my new 383 strocker in my 81 3/4 4x4. I had the smae problem, so i went to napa and i bought this tool called a "manifold strether" in spreads it so it cathes all six stud holes.
The front wheel stud on a 1992 Chevy Blazer S10 can be changed by jacking the vehicle up, removing the wheel, and unbolting the caliper. The rotor assembly can then be removed, and the wheel stud pressed or hammered out of its seat.