Is a sc3800 a bolt in swap? Anyone know?
I think the 60 degree block of the 3.1 wouldn't be the same of 3.8, 90 degree block .
But damn that could be a sleeper with 300 horse......
It's been done but I think it's far from a bolt in. The Cavalier's engine compartment is quite a bit smaller I think.
There's also the dual cam 3.4l from the Lumina Z34 that's the same block as the 3.1, just has the DOHC heads IIRC.

