01bonneSC wrote:What trans do you have? Is the bellhousing pattern the same as a small-block?

This is where you got me. I know nothing about the transmission. But like I said, its all original, so whatever it came with, I've got.

You would probably be better off swapping to a 350 motor or something like that, can get more power out of it and will run forever.

Unless, you just wanted a straight stock motor....

Not the case, just don't really know what I'd put in it. I heard that you can fit a 305 in it if you move the ...

The 82-86 Bonnevilles never came with a 4.1L engine. The 82-86 only had the Buick 3.8 V6, 305 SBC or Olds 350 Diesel.

Is it a 82 Bonneville or a 81? The 81 would be a big one based off of the Caprice/Impala/etc, and the 82 would be the smaller ones.

The car is all orignal, minus a back door and ...

Hey guys, I'm looking to rebuild my Bonneville's engine, it appears to have a coolant leak coming from somewhere. I've recently replaced the thermostat and water pump, so I don't know where else it could come from, so I'm looking at tearing it down, cleaning it up, and checking it out. If it turns ...