Originally posted by 90TGP
It's illegal to swap a V6 for V8 if you don't tell your insurance company. Let's say you have a V6 Mustang, you pay V6 insurnace prices. Now let's swap in a V8, but not tell the insurance company.
If you get in a wreck with the V8, they will most likely not cover your car because you did not tell them of the motor swap.
Incorrect. They just won't pay for the v8 if it's trashed. They'll pay for whatever the stock motor was.