Whats the difference between a pontiac 455 a buick 455 and a olds 445 are they the same?

thanks

 

about the only thing the same between them is their displacement. parts are unique to each marque. they share the same transmission to engine bolt pattern, too.


bill

 

For Power, Buick 455...short(er) stroke big bore. Nothing is interchangeable except maybe the alternator and transmission

 

For even BETTER power, Olds 425. Again, big bore, short stroke, forged crank.

Displacement and transmission are about the only common things. Even the displacement is not exactly the same, but 455 sounds so cool...

 

They are all entirely different. different shapes sizes, and designs.

In nerd speak a Buick 455 is actually a 455.72589xxxxxxx
Pontiac 455.57425xxxxxxx
and Oldsmobile 454.59877xxxxxx

 

what info are you looking for ? How to tell one from the other Buick has ingnition in front olds and pontiac are in back, olds has a long narrow valve cover with a oil tube up front on the timing cover pontiac is in valve covers.

 

Now you've gone and done it. The Chebby guys will be calling the Olds a 454

 

...and maybe the distributor cap and rotor

 

They all work great for their original purpose, moving around huge land barge automobiles. To make them strong enough to hotrod and beat on you need to throw huge amounts of money at them to make them hold up.

 

Pilot man where have you been?

 

pretty sure the starters will interchange between Pontiac and Olds!