1985 Delta 88 Royale Largest Engine

What is the largest engine that will fit in a 1985 Delta 88 Royale 4door sedan? Also, Where can one find information about how to put it in? I am just starting to learn about how to work on cars.http://www.automotiveforums.com/vbulletin/images/smilies/icon16.gif

What is the largest engine that will fit in a 1985 Delta 88 Royale 4door sedan? Also, Where can one find information about how to put it in? I am just starting to learn about how to work on cars.http://www.automotiveforums.com/vbulletin/images/smilies/icon16.gif

You could fit a 455 with some modifications...

A 403 will fit without much trouble except removal of the computer system...

Thank you kpw olds.

how much modification would be needed to make a 455 fit?