My dad has had this 93 buick roadmaster wagon that runs good.
Is this a 5.7L or a 5.0L? The 5.0 was way more common overall, but wagons could have the 5.7L which was a nice bonus.
If this is a 5.7/350, I used the service-replacment crate engine for that application in my K1500 for almost twenty years.
Roller cam, two-bolt main, windage tray, high-volume oil pump. Cast crank, powdered-metal rods, single-roller timing chain, and hyper flattop pistons. Of course, one-piece rear main so it needs the special flywheel/flexplate for one-piece seal crank. And the roller cam is unbelievably mild
. (But so was the stock flat-tappet cam in the original engine.)
The production engine may not have some of the features that the service-replacement engine has--powdered metal rods, and single-roller timing chain for example.
on the stock K1500 computer and wiring. The B-body engine has flattop instead of dish pistons, roller cam instead of flat-tappet, but the stock computer handled it just fine. I didn't get the power increase I was hoping for, but it was slightly better, along with the same or slightly better fuel economy. I installed Edelbrock emissions-legal "headers", a high-flow catalyst, and a Flowmaster cat-back system at the same time as the engine was installed.
You'll want to keep the entire wire harness for the engine, including the computer. If your gear ratio is different from the donor car, I expect you'll need to have a PROM burned