No, it is not a bolt-in conversion. But why in the world would you want
one. Those 4.9 aluminum blocks were known for crankshaft issues and porous
water jackets in the block. If you want to go to a caddy drivetrain, locate
a good northstar.
Steve g.
> does any body have any feedback on if a 4.9 engine out of a 1991 caddy el
> dorado will fit in a 1990 olds 98 i think it should can someone help me
> with this