Originally posted by techinspector1
Chances are real good that the car has a 500 in it. I don't think Cad used the 472 after 1974.
Yup, 75-76 full size Cadillacs all had 500s. They have lotsa torque and bulid it all at lower RPM, don't need to rev them over about 4500. They are also comparitively light, actually lighter than a big block Chevy. There is also a growing aftermarket of high performance parts.

Cruise over to Maximum Torque Specialties at

http://www.500cid.com/

They have lots of info there and some very helpful folks on their forum

Pat