flipscobra Unbolt the bell housing and install a jack under the trans to lift it up alittle when pulling the motor. Make sure you have the car on jack stands. Heavy rap the frontend of the car with moving blankets to protect the paint. I missed the shelby block thing, I have gotten the head off in the car, but it was a real pain in the a$$.
Pull the motor and do both sides. What head gaskets are you using?? Felpro #1020's. I have not had to retorque them after running the motor. I do run Hi-tac on both sides of the gaskets. I also do step torqueing of the head studs, and let sit for 5 minutes before doing the next torquing step. That Aluminium motor is going to move about.0015" with ever heat cycle. Over time you will get leaks. This is why I use sprays on the headgeaskets and surfaces and RTV on all other sealing surfaces. Go luck. Rick L.