64 base Catalina, 389 2 barrel rear end.

[Gene53]

Please tell what differential this is, never saw one without cover bolts.

 

[cammerjeff]

It is a Pontiac/Olds 9.3" very good axle, built like a Ford 9" with the removable center section. Here is a Hot Rod link to some info on them

1957-1964 Pontiac and Oldsmobile Rearends - Street Rodder Magazine

If you're looking to rediscover why the 1957-1964 Pontiac and Oldsmobile rearends were/are overwhelmingly favored among others, you need to check out this month's Tech article featuring pictures and details describing these high-performance parts!

www.hotrod.com

They were very popular drag racing axles back in the 1960's

 

[Gene53]

Thank you, I know little about Pontiacs more of a Mopar man but I love this car. Like I said, never saw or head of this, good to know.

 

[Reddog64Cat]

It is a Pontiac/Olds 9.3" very good axle, built like a Ford 9" with the removable center section. Here is a Hot Rod link to some info on them

1957-1964 Pontiac and Oldsmobile Rearends - Street Rodder Magazine

If you're looking to rediscover why the 1957-1964 Pontiac and Oldsmobile rearends were/are overwhelmingly favored among others, you need to check out this month's Tech article featuring pictures and details describing these high-performance parts!

www.hotrod.com

They were very popular drag racing axles back in the 1960's

Awesome article ...thanks. I too have a 64 Catalina and beginning the build