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#91
Originality / Re: Frame Mounted Rear Brake H...
Last post by dannystarr - February 04, 2026, 02:45:32 PMThese are GM part #3908326. I dug out my box. I have 17 from '66, 7, 8 and 9 dates. They are wrapped in TP and in ziploc bags. I have some early '66 ones that I can't touch, as they are scarce to find in this nice condition.. BUT, maybe I can check for one with a later date in poor condition and then rob some parts off of it. I am pretty ill right now, I just woke up. But let me know if you want me to get them all out and see what we can find. They are all GM Original. I will check this message board later tonight.
#92
Originality / Re: Big Block Timing Covers
Last post by boomer632 - February 04, 2026, 01:30:59 PMI have an original GM BB 8" cover that I restored and have some pics of. It has the dowel pin holes and no bolt hole in the bottonm middle of the channel. Timing tab has the AOR marks, spot welded on to the cover and has the angled cut at the corner as well. I can post some pics later.
#93
Originality / Re: Frame Mounted Rear Brake H...
Last post by boomer632 - February 04, 2026, 01:16:13 PMI dont have an old one to compare one to, thats why I was asking
#94
Originality / Re: Frame Mounted Rear Brake H...
Last post by GMAD_Van Nuys - February 04, 2026, 01:14:51 PMI bought an assortment of snap rings for about $7 from O'Reilly Auto Parts.
#95
Originality / Big Block Timing Covers
Last post by bcmiller - February 04, 2026, 11:06:28 AMSomeone asked me about big block timing covers earlier this morning. I won't put them on the spot, but wanted to get this posted.
Anyway, it doesn't seem we have anything on the main site in the engine section about timing covers. If it is there, I apologize. I was asked the differences. specifically when the dowel holes were added in the cover. I was thinking for 1969 but couldn't remember. So I checked into my files and found an old post that I had saved from the Chevelles site. I believe this information to be correct from what I have seen. I am not taking credit for writing up the information pasted in below in italics. That is from Jeff Helms, a highly respected Chevelle expert. There would be no reason for the timing covers on Camaros to be different than on Chevelles.
Kurt, if you want me to work on a section to put into the engine write-up, I can work on it. Just let me know. If you don't feel this post is appropriate, remove it.
Again, credit for the information below belongs to Jeff Helms.
If any of you have different thoughts, post them here in this thread with pics. Thank you.
There were at least 10 different BBC timing covers that were used between 1965 and 1969 (five for the 7-inch balancer and five for the 8-inch balancer).
1. The 1965 - early 66 covers used a non-dowel pin cover with a very small, square timing pointer. They only have A-O on them and not A-O-R like the later covers. They have a captured nut in the bottom center of the cover which matches up with a bolt hole in the front center of the oil pan.
2. The 2nd design 66 cover is identical to the above but has the larger A-O-R timing pointer (angled on the 8" balancer version).
3. They dropped the front center bolt hole in the oil pan at the beginning of 67 production (some say they did so late in 66 production but I have seen no original late 66 car or original and complete late 66 396 or 427 engine that bares that out). As a result, at the beginning of 67 production (or some time after that) they dropped the captured nut and the hole in the bottom of the timing cover. However, the slot for the nut is still there in the U-channel reinforcement piece that goes across the bottom of the cover. There is no indication in the parts books of a new part no. being issued, though, which is odd. (Still no dowel pin holes either).
4. There is another cover that is identical to # 3 above, except it does not have the slot in the reinforcement piece for the captured nut. (Still no dowel pin holes). I do not know when this change occurred, and again there is no indication in the parts books of a new part no. being issued.
5. Then there is the 69 cover which has the dowel pin holes, and no hole, nut or slot in the bottom center. This one finally does get a new part number!
Anyway, it doesn't seem we have anything on the main site in the engine section about timing covers. If it is there, I apologize. I was asked the differences. specifically when the dowel holes were added in the cover. I was thinking for 1969 but couldn't remember. So I checked into my files and found an old post that I had saved from the Chevelles site. I believe this information to be correct from what I have seen. I am not taking credit for writing up the information pasted in below in italics. That is from Jeff Helms, a highly respected Chevelle expert. There would be no reason for the timing covers on Camaros to be different than on Chevelles.
Kurt, if you want me to work on a section to put into the engine write-up, I can work on it. Just let me know. If you don't feel this post is appropriate, remove it.
Again, credit for the information below belongs to Jeff Helms.
If any of you have different thoughts, post them here in this thread with pics. Thank you.
There were at least 10 different BBC timing covers that were used between 1965 and 1969 (five for the 7-inch balancer and five for the 8-inch balancer).
1. The 1965 - early 66 covers used a non-dowel pin cover with a very small, square timing pointer. They only have A-O on them and not A-O-R like the later covers. They have a captured nut in the bottom center of the cover which matches up with a bolt hole in the front center of the oil pan.
2. The 2nd design 66 cover is identical to the above but has the larger A-O-R timing pointer (angled on the 8" balancer version).
3. They dropped the front center bolt hole in the oil pan at the beginning of 67 production (some say they did so late in 66 production but I have seen no original late 66 car or original and complete late 66 396 or 427 engine that bares that out). As a result, at the beginning of 67 production (or some time after that) they dropped the captured nut and the hole in the bottom of the timing cover. However, the slot for the nut is still there in the U-channel reinforcement piece that goes across the bottom of the cover. There is no indication in the parts books of a new part no. being issued, though, which is odd. (Still no dowel pin holes either).
4. There is another cover that is identical to # 3 above, except it does not have the slot in the reinforcement piece for the captured nut. (Still no dowel pin holes). I do not know when this change occurred, and again there is no indication in the parts books of a new part no. being issued.
5. Then there is the 69 cover which has the dowel pin holes, and no hole, nut or slot in the bottom center. This one finally does get a new part number!
#96
Originality / Re: Frame Mounted Rear Brake H...
Last post by Delco115 - February 04, 2026, 08:56:06 AMC-clips can be bought at Lowes, Home Depot, Ace hardware.....generally any good big-box location. They uually have them sorted by thickness and/or dimension. you could also try at McMaster-Carr....they carry just about anything you would ever need in the way of hardware. Any of these stores could probably help you with your need. They are also lot cheaper than any "parts house" supplier you may use. Good luck.
#97
Originality / Re: Frame Mounted Rear Brake H...
Last post by boomer632 - February 04, 2026, 07:28:59 AMThats how my original looked when I pulled it apart too. Unfortunaltely the c-clip was too far gone and the metal washer was pretty bad. Thats why I figured Id buy a repro one and use its c-clip and metal washer. I circled the missing parts in your photo that were missing from both new OER valves. I wonder where a new c-clip can be sourced? I asked Scott at MCR and he said the same.. get them from a new repro valve. Well it appears that the OER ones dont have the same internals. I think there is another brand that makes them. That one has INL stamped on the face of it. Maybe Inline Tube?
#98
1969 - Orphans / Maybe an actual orphan-69Z
Last post by David K - February 03, 2026, 11:41:38 PMMods, if this isn't legit, please delete or close the thread. If it is, please move it. It has a double stamped pad...LA car.
https://www.facebook.com/marketplace/item/883871757598779/?
https://www.facebook.com/marketplace/item/883871757598779/?
#99
Originality / Re: Frame Mounted Rear Brake H...
Last post by 169INDY - February 03, 2026, 11:21:36 PMhere is my orig apart.
(Dec 67 1968 SS396 LOS)
(Dec 67 1968 SS396 LOS)
#100
General Discussion / Re: 1969 cowl hood insulation ...
Last post by hugrz28 - February 03, 2026, 06:54:13 PMMy response is consistent with what Jim (169indy) has said. All be it the under hood insulation has a few minor issues the overwhelming one is the thickness and density of the material. With the combination of thickness and density it will not compress at all. That being said you cannot make the factory style clips seat and lock without them splitting them. If you do manage to get one to seat it will over time split as well.
What I did and it was cumbersome and time consuming at best was to spot face (dish) each location where a clip was to be installed. I did it from the side facing the engine compartment when installed There is no good method that I could figure out so I combed it (remove material) with a razor blade. You need to remove enough material (it will be thin when done) under the clip disk so that it will lie down flat and won't be seen after the clip is installed. Conversely you could do it from the back side as well. I did get it to install using the factory style clips but set aside an afternoon to work on it.
I'm sure there might be better ideas on how to fix it but this is what worked for me.
Dan
What I did and it was cumbersome and time consuming at best was to spot face (dish) each location where a clip was to be installed. I did it from the side facing the engine compartment when installed There is no good method that I could figure out so I combed it (remove material) with a razor blade. You need to remove enough material (it will be thin when done) under the clip disk so that it will lie down flat and won't be seen after the clip is installed. Conversely you could do it from the back side as well. I did get it to install using the factory style clips but set aside an afternoon to work on it.
I'm sure there might be better ideas on how to fix it but this is what worked for me.
Dan