new guy here, and tried the search function.

OK, from all I've researched I have a 455 in my 69 Delta 88 convertible based on numbers I've researched and the size of the intake. However, why are some painted blue, and some painted red/orange?

And..what is the final deciding factor to ID the 455 for certain just for good measure?

Thanks

 

Try this link for starters. There have been quite a few posts lately about identifying/verifying engine/model. You should be able to get quite a few hits with our search function. Good luck.
https://classicoldsmobile.com/forums...55-rocket.html

 

68 69 455 are red and 70 and up are blue. on the left front of the engine. the second diggit is foer the year 8 is for 1968.

 

pontiac bigblocks are blue