Top Definition
Late-model Buick Roadmaster that has had its engine modified to increase horsepower -- effectively making it into the Gran Sport model that was never factory-built. The most eligible years are 1994-96 when the 350 cubic inch (5.7L) LT-1 Corvette engine was standard.

Typical modifications:

Suncoast RAISS Cold Air Intake
Suncoast Functional Ram Air Hood
Edelbrock performer tunnel ram intake manifold
52mm Edelbrock Throttle Body
ClearImage Tri-Y headers
Flowmaster 40 Series mufflers
Jet Performance Power Control Module
Edelbrock Performer 54cc Cylinder Heads
* ROAR!! *

"Did we just get blown away by a station wagon?"

"Yea, that was a Roadmonster."
by walford December 08, 2009
5 Words related to Roadmonster

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.