I assume you mean the valve cover gasket. You replace it by removing the valve cover and cleaning off the oil gasket and the mounting surface. The install the new gasket and reinstall the valve cover. Tighten it to the specifications the manufacture of your engine recommends.
Bend over the mechanics counter.
I was told by a shop today, 1 hour each.
Several manufacturers built 3800. Without that information no answer can be given
I believe you want to drain the coolant, remove the top hose at the thermostat housing, remove the housing, replace the stat and gasket, reassemble fill with coolant and bleed the system.
3800 s2 is nice engine, and you could really place any engine in there with a large amount of modifications including chasis, mounts, trans and what not. If your vehicle came with the original 3800, that's the only engine you can replace it with without replacing tons of things.
Never have seen a bad head gasket on a 3800 engine. The upper intake will leak coolant into the imtake ports and a greedy mechanic will tell you it's head gaskets. You may need to replace your oil pan gasket with a felpro perma dry gasket, cost more but worth it.
replace the water heater inlet pipe on the intake manifold on a 3800
Ineed the torque sequence and tightening specs for a 92 GM 3800 intake.
starters are underneath the car where the engine and trans meet. they are on the passenger side I believe.
3800 lbs if you have the 3.8L engine.
Weight on my Pontiac LeMans Sport registration is 3800
Both engines will bolt to the same trans, and fit in the same car, however the electrical systems and computers are different for both...to swap engines you will have to replace the entire engine wiring harness and computer