Originally Posted by jacuff23
what do u mean ? it was well taken care of and low miles. were those motors problematic?
Those motors, the 3800 II, they are solid motors, just a few issues you need to take care of and they should last 250-350k miles even.
You will want to go with the Aluminum framed gasket Kit, Felpro MS 98014 T
Make sure the coolant elbows are replace with the aluminum Dorman 47065HP coolant elbows.
And for the UIM you should not have many issues, but getting that aluminum upper intake to work right will take some work, you have to drill a hole in it for the PCV and, and I think the throttle body needs a spacer, I'll have to try to find some info on swapping that L26 UIM onto the L36, it can be done as I said, but you may just want to consider getting a new plastic UIM, as long as you replace the EGR stove pipe with the smaller diameter one you get in the LIM kit, and consider tapping and plugging the coolant ports on the UIM that go to the throttle body you would be ok.
Google L26 UIM to L36, you should see a thread on the Gran Prix forums, look at the pics and see what all the guy had to do to get the L26 UIM to work, it is a good bit of work.