Oil Pan Difference - 69Z

[enio45]

Friend of mine called and asked if I knew what the difference would be in a 69Z oil pan - vs. a 1970? Seems his sept of 69Z has a 70 oil pan?

Any insight as to the differences - or would a late 69 have a 70 pan, similar to other late 69-70 transition parts?

Appreciate your insight on this....

[X66 714]

Seems to me there was a big article on this site some years back. I'll see if I can find it unless somebody know exactly where it is....Joe

[Lynn]

Eddie; I can't tell you if there was a difference between the 69 and 70 assembly line pans.

I do know some late 69's got the second design valve covers with drippers, starting in about August. It would make sense that IF the 1970 Z/28 oil pan was functionally the same, they COULD have started using it early.

I know for certain that the 69 assy line pan has multiple differences from the ones that were sold over the counter starting some time in the 70s.

Comparison is here: https://www.camaros.net/threads/nos-vs-original-z-28-oil-pans.178450/

[enio45]

Lynn, That is my thought - but i guess we would need some examples of the late cars inspected and determined if either pan was used.

i did see your thread on the camaro net site - interesting and informative.....

looking for more info.....thank you...

[Lynn]

Guessing my first question is:

Are we certain that 69 and 70 Z/28 used different oil pans?
Would like to see pics of each to compare.

I do have a 1970 LT-1, but it is a Corvette, so the pan is MUCH different from the Camaro.

[NorCam]

Perhaps Mike (RSZMJT) can chime in on this. He has had many of these pans off and probably knows more than enough about the differences between the 69 Z pans, 70 LT1 pans, and most of the corvette pans. I recall there are a couple of differences between them but will leave him to chime in and tell you about those if he sees this thread.

[jl8z28]

I have a 11A of 69 car i don't know if you can tell difference on the outside ill look at my may car and see

[jl8z28]

I have a 11A of 69 and a may ill check a see if there is a difference on the outside

[enio45]

that would be great - his car is a 9C - late 69 car.....

pics would help - to understand the assembly line correct version etc......

[Zman1969]

I have a 11A of 69 and a may ill check a see if there is a difference on the outside
I know the later L-82 pans are similar but had noticeable external differences in the strengthening "ribs" that are pressed in for strength also slight internal changes too
here's a good thread with info

https://www.camaros.net/threads/nos-vs-original-z-28-oil-pans.178450/

http://www.camaros.org/forum/index.php?topic=15386.0

http://www.camaros.org/forum/index.php?topic=10201.msg76264#msg76264

[NorCam]

Great info on the pans there Lynn. The differences in these pictures are exactly what has been explained to me about the differences in a factory pan to the over-the-counter units. The spot weld counts, the extra depression (clearance pressing) in the hump, and that reinforcing rib in the center of the pan. The 70 pans are quite similar if I recall. I have one here that was modified to look more like a 69 original and will go check it.

Thanks for that link Zman.

[jl8z28]

Its hard to take pictures under the car to much to move to get to the lift first is 11A other may

[Lynn]

Jason (SupernovaSS) has a really nice oil pan on ebay, believed to be an early NOS pan from the 70s.

"This pan is an NOS unit from the 70s that was installed but the engine was never installed or started."

https://www.ebay.com/itm/373634672504?hash=item56fe5ca778:g:Uk4AAOSwAwRg3gy H

If there is a difference in the 69 Z/28 pan and the 70 Z/28 pan, I would expect they would show on this pan as well.

It looks a lot like the assembly line pan I used in the comparison posted on Team Camaro a few years ago.

[SuperNovaSS]

Ooooh, free publicity! Thanks Lynn. Yes, I think this was a NOS pan that was installed on the block but never started. Check out the paint masking around the drain plug. I believe that is factory.

Jason

[SuperNovaSS]

For anyone who is interested in the pan I have on eBay, the auction ends tonight at 7PM Pacific Time.

Thanks,

Jason