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1.
454
Auto engine of 454 cubic inches; very strong; built for high-performance

"Once I get that 454 block in my 67 'Maro, I'm comin off the blocks hittin 10's at the racetrack!"

(Changed because the first year of production of the Camaro was 1967, NOT 1965)
by IROCZ28 June 02, 2007
 
2.
454
Auto engine of 454 cubic inches; very strong; built for high-performance
"Once I get that 454 block in my 65 'Maro, I'm comin off the blocks hittin 10's at the racetrack!"
by BayAreaPimpstress June 30, 2004
 
3.
454
An engine that has a displacement of 454 cubic inches. Scary as hell because of all the horsepower one usually packs. Sounds kind of what I imagine a tar pit would at idle (blub blub blub)
Mike: This impala doesn't look too bad.
Me (pulling up the hood): HOLY GOD! He's got a 454 does this dude wanna tear up his transmission.
by P. Kaltenbach March 16, 2007
 
4.
454
a really fat female who is compared to the extremely large engine-size equivilent
"amber was definately a 454"
by tedbillrickstevetim April 26, 2009
 
5.
454
four fifty four;
world of what you create
the act of being young and free
and embrasing it.
worry-free.
"its all 454 up in here"
"its all good"
by anabell February 22, 2007