What year is this rear end & front end??

[tartop]

Can anyone positively tell me what year this rear end and front end are from?? I inherited them from my Dad with his 1929 Pontiac after his passing but by looking at the hubcap I am guessing that it is not off of a 1929 even though the rims measure 19 inch like the 1929 does. Will any of the parts interchange with the 1929??

 

[straight8pontiac]

tartop,

 

Based on the Indian head insignia on the hubcap I believe you have a 1930 rear and front end.

 

Dave

[Guest]

Those are Series 6-30B or Series 401 hub caps.  The axle assemblies should fit  Series6-28, Series 6-29, Series 6-29A, Series 6-30B and Series 401.  This would include cars built between August of 1928 and July of 1931. Original rear end ratios could be different but all replacement crown and pinions fit all years. Brake components will vary between series.

Edited November 13, 2016 by Guest (see edit history)

[tartop]

Thanks Dave and Reid. I was thinking they were 1930 because my Dad bought them at the same time he bought a spare 1930 engine and tranny. Was just wanting to confirm it since this was about 40 years ago and I was only 14 at the time. We used to go to a lot of swap meets and search for Pontiac parts. If Dad thought it would work in the 29 he would buy it for a spare. So I have the original 29 motor that I am starting to rebuild, the complete 30 engine/tranny and another 29 short block assembly. Thanks for your input guys!   Steve

[Guest U.P. Oakland]

Thats an Oakland simple cast into the diff is it not?

 

[Guest]

Of course it is.  Starting with series 6-28 (late models with 10 spoke wheels) Pontiac used Oakland differentials.  Prior to that they used Chev's torque tube drive.  This rear end was not strong enough for the more powerful Pontiac engine.  If you dropped the clutch quick on a Series 6-27 or early series 6-28 the engine reved and the car stayed still.  Pontiac engines also show a modified Oakland symbol on their castings.  Probably like a dog marking it's territory.