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A powerful GM big-block engine, capable of delivering 400+ HP, usually found in vintage full-sized cars.
ebon: Man, dat deuce wit a 455 whacked my 4!
engl: My 1964 Chevy lost a race to a Buick Electra with a 455cu.in. engine!
455 by daDebil February 21, 2004
Related Words
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A powerful engine from oldmobile
I have a 455 olds in my boat
455 by vince April 1, 2005
A form of automotive air conditioning for cheap cars - four windows down at fifty-five miles per hour. Ususally pronounced "four, fifty-five".
Damn it's hot in this Pinto - turn on the 455!
455 by cine0n November 27, 2004
a buick motor that kicks the chevy 454 up and down the block
pussy 454 weighs more than a 426 hemi
455 by ch3n02 May 9, 2003
References 2 different GM-produced motors. The pontiac version was good for keeping boats from moving around when attached to the end of a chain, while the Buick versions made 400+ hp and 500+ lb. ft. in stock form, or in modified form (like the one in MY pimp-455 ride) can produce in excess of 520 hp and 598 lb. ft. WOOT!
Ricer: Damn boy, thats a big-455 motor, how many liters is that?

Buick: Well, its 455 cubic inches, which is 7.6 liters for you dumb-45535 who can't convert to proper measurements
455 by BigDick February 29, 2004
Look at her 455!
455 by Bilaam May 26, 2020