I've got a 69 E 2+2 auto.... What engine years/cars will be a pliug and play swap?

I'd like to pick up a late model 6 cyl to drop in and drive the car while I rebuild the original motor.... I'm sure I'll have to switch the intake exhaust from my motor to the new motor.....

 

Teqsand:
In general any 4.2L will work, but some are easier than others.

Several guys on the Jag-lovers forum have said they have used engines sourced from "late" model SIII XJ6s, minus the fuel injection of course. I think you will also have to change the water pump and engine sump (oil pan), as well as the exhaust and intake manifolds. If you had a 4 speed you would also need to change the flywheel. You could convert to a manual with the engine out, or maybe use a later slush box.

The fuel injected heads have bigger valves and the block is supposed to be stronger, so there are real advantages to using a later engine. Cam and valve timing remained essentially the same, IIRC, and the SIII has a v. good electronic distributor that could be used as well.