I have a 67 C.S Conv,
330 High comp
2 speed
12 bolt.

What are the standard rear end gears for these cars ?

 

With the 2 speed I would guess 2.56, 2.78 or 3.08 Other possible ratios in 1967 could be 3.23, 3.42, 3.55 but with your combination I would expect the taller gears. If it's not been messed with there would be a two letter stamp on the passengerside tube. It could be on the front or the back of the tube. Lots of codes, you may be able to find the list on the wiki site, if not locate yours and post it here. John

 

Check out this thread that I posted a picture from my 67 Cutlass manual to better identify the rear end in your car.
Hope this helps.



https://classicoldsmobile.com/forums...t-o-plate.html

 

Thanx guys,
I'll have to crawl under and see

 

The standard ratio for a 330 2spd auto car should be 3:08. Any other ratio was special ordered.

Henry

 

Henry, when you say special ordered, that may be misleading to some.
Many other ratios were simply optional, as also was the "O" rear (12 bolt cover/10 bolt gear). The "P" rear (10 bolt) was standard in '67.

Side note: Supposedly the "B" 10 bolt (with the same gears of a "P") could be there in lieu of the "P" with series 1 and 2 (I believe) carriers. I don't recall seeing one, but most of what I've seen have been the performance rears with series 3 carriers and they were all "P" rears.

 

The term "special ordered" would apply to that 750 HP blown hemi 442 that my uncles brother in law bought new from the dealer. After it out ran everything in the entire western hemisphere, it got stolen and no one ever saw it again.

You probably never heard about it because it wasn't one of your normal options.

Norm

 

 

LOL

 

Thanx