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107551 Posts in 12507 Topics by 4812 Members
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76  Camaro Research Group Discussion / Decoding/Numbers / Re: 1969 Z/28 YH Wheels on: April 06, 2013, 10:59:03 AM
I'm not sure how you tell, but beware...   recently one of the big camaro parts sellers let it slip to me that they have 'restamped' FW wheels to YH wheels; they said the wheels were identical otherwise, although I've always believed there was a difference (else why would Kelsey Hayes have changed the code??).  

They are Different! FW wheels have the smaller cooling slots with the perfectly round ends, original YH wheels have a wider cooling slot and the ends are a irregular shape, not round. This works until about 9/69 when YH wheels went to the smaller cooling slot. This is easy to see if you compare wheels side by side. In looking at the wheels they appear to be genuine. IMO.
 I would be VERY concerned that the wheels are straight, dont forget they are 45 yrs old.  I have restored quite a few YH wheels, and allmost ALL of them needed to be straightened/machined on the backs to make them run straight. Also the seller doesn't say whether REAL paint with hardener was used instead of just rattle can paint. The Stamp looks OK IMO, ask him to post or send you picture of ALL the stamps as well as close ups of ALL the cooling slots straight on.
77  Camaro Research Group Discussion / Originality / Re: 1969 z/28 carb fuel line bracket on: March 29, 2013, 09:53:13 AM
My Canadian Documented 06A RSZ28 still has it, car was built approx. June 21, shipped June 23 ( all June cars are 06A), on the bracket in tiny letters it says Stamp Rite.
78  Camaro Research Group Discussion / Restoration / Re: Original Muncie bolts - head markings info on: March 26, 2013, 04:02:18 PM
Kurt IIRC I've seen a few later 69 built cars with L side cover bolts. Not sure there is a correlation to build date but they were certainly used.

Steve,  I personally have never seen "L" bolts on camaros, but lots of 64,65  Corvettes/Chevelles etc. with the "325" case., not to say it didnt happen.
 I have Also seen "A" on 70 up Camaros/Chevelles
79  Camaro Research Group Discussion / Decoding/Numbers / Re: Stamping Tool for VIN on Block & Trans on: March 26, 2013, 10:10:53 AM
Larry, Yes the same gang holder was used on the Transmission and the engine, so the characters/fonts should match. The Vin's are usually very hard to read in the rough cast area and sometimes only carefull scrutiny with a magnifying glass will reveal them, although I have seen others that are easily read, kinda depends on the roughness of the casting in that area and if Brutus was on the stamp that day! . It looks like your trans build date is P9E06A, which is P=Muncie,9=1969,E=May,06=6th day,A=M20 Wide Ratio. I am guessing your car is 06A production on the cowl tag?
BTW - That fill plug has seen better days, looks like it is going to be hard to get out and replace.?
80  Camaro Research Group Discussion / Originality / Re: Z-28 fender emblems. on: March 25, 2013, 04:33:42 PM
Nope , holes are different, 100% for sure
81  Camaro Research Group Discussion / Originality / Re: original transverse muffler date codes? on: March 18, 2013, 08:57:05 PM
My 69 Z28 muffler has only a "W" on it with no other letters or numbers. The V notches are exactly the same, they were not cut. The GM Box was very badly deteriated when I got it late 90,s, so I dont have a part number, but it was identical in size/shape to the walker aftermarket muffler the car had on it since about 84?
 1 of the other NOS mufflers also has the "W" with no other letters or numbers at all, it is in a GM box with part number # 3981951 on the box as well as the box is dated 9-22-70. It has the small slits in the inlet tubes as previously posted . GM parts book says this is a 67/68 muffler, my book shows 69 as  #3961396 which supercedes to #3981951. The other NOS muffler is buried in a shelf of parts, cant get at it rite now. The posted pictures are of the muffler on my car.
Hope this Helps.
82  Camaro Research Group Discussion / Originality / Re: original transverse muffler date codes? on: March 17, 2013, 12:55:07 PM
I have a NOS muffler on my 69 Z28, very old/old issue, bought it about 16 yrs ago, and it was in a very deteriated old GM box. It has 2 V type notches with square bottom at the end of the V notces on the inlets where the over the axle pipes go into the muffler, I have seen these before on other GM cars/corvettes to correctly locate the pipes at the rite angle? I have 2 other NOS mufflers and they dont have the notches. I dont know whats original , but pretty sure they ALL have the "W". I will check them all for other numbers and repost this info.
83  Camaro Research Group Discussion / Originality / Re: 69 owners manual question. on: March 13, 2013, 09:01:36 PM
And to Totaly confuse this post, Canadian Delivered Camaros  & Z28 use a Different One. This is my owners manual out of my 06A RSZ28, I have owned the car since 73, it was in the glove box with the original Protecto Plate. It is second edition Dec/68
84  Camaro Research Group Discussion / Restoration / Re: How to assemble oil line to block fitting? on: March 13, 2013, 05:21:53 PM
Thanks rszmjt, but now a question about that Corvette Central line.  Is that line long enough to reach from the console gauge through the firewall grommet to the engine block?  

Yes and its Black Plastic as per original, at least the last time I got 1 it was.
85  Camaro Research Group Discussion / Maintenance / Re: PCV question on: March 13, 2013, 01:01:30 PM
Never hear or read much about these little items, so I thought I would ask.

Just wondering about the PCV's. What can be said about them? Are they all the same? Can you just put any old valve in place of the one that was installed at the factory? I noticed the ones on ebay today, the purple ones for the 69 Z28's, those are repro's but other then the color are they correct?


How about starter solenoids? I'm not even sure I have the original on my starter, number on it is 1114362, which needs a rebuild, but what is being used to replace a bad one? I know you can take them apart and put a new disc in and all that but what about the main body, how do you repair that? Is it possible?

Maybe I'm all wet but the purple PCV for 69 Z/28's whatever is a falsehood that has been promoted so much many believe it to be correct. The correct PCV back then was a spun valve and not crimped as the later early 70's design. They are hard to find and can be extremely expensive if one knows what they have. I just posted pics of an orig. vs the crimped design due to a recent PCV question in our build thread. Check it out!
http://www.camaros.net/forums/showthread.php?t=182584&page=43

X2 Chick, Your info is 100% correct. I have a 6,000 mile 70 Z28 LTI Engine and it has the spun valve. As noted, very hard to find and also EXPENSIVE.  The Purple Valves are not correct!
86  Camaro Research Group Discussion / Restoration / Re: How to assemble oil line to block fitting? on: March 13, 2013, 12:55:40 PM

this is one solid piece with no splits (tiny barrel sleeve in pic)


[/quote]

That ferrule might be OK in that fitting against the block but Good Luck getting that one to seal in the factory gauge end, I saw a non stock type ferrule like that 1 leak years ago and it messed up the carpets big time.  Also the Camaro repo line kit has the splits backward as noted above, I tried to use 1 a few years ago and couldnt get it to seal.

 FWIW at the gauge I use a Corvette repo line, it has the "Correct" type GM production sleeve and "split" ferrules.  Line kit with "CORRECT" ferrules is $9.95 from Corvette Central.

I also usually wad up a small "high absorbent towel" and place it in the consol under the gauge just in case.

http://www.parts123.com/parts123/yb.dll?parta~dyndetail~Z5Z5Z50000050g~Z5Z5Z514476~P9.95~~~~S3QH0P4VAX96512229824Q~Z5Z5Z5~Z5Z5Z50000050G
87  Camaro Research Group Discussion / Originality / Re: 4053 Carb question. on: March 12, 2013, 10:51:23 AM
FWIW - Most Later issue repo & service date 4053 carbs also have the wrong accelerator pump body & retainer screws and accellorator pump adjuster bolt/spring setup. Original production ine installed 4053 housings use clutch screws and the adjuster bolt never used a nyloc nut , they had a screw the other way with a t nut setup against the pump housing arm. Also the base idle adjustment screw was a different design.
88  Camaro Research Group Discussion / Restoration / Re: Original Muncie bolts - head markings info on: March 11, 2013, 10:22:57 PM
Most 69 Z28 trans have "SBC" on the 3 upper tailhousing and 2 shorter tailhousing bolts, and usually "TR" or L5 on the longer singular tailhousing bolt. Either "SBC" or "TR" side cover bolts. Earlier cars pre Jan/69 seem to use the "TR", later cars use "SBC"
 I have also seen "RBW" tailhousing bolts.
BTW, lots of trans have mismatched bolts, I dont think the Muncie plant cared, the workers used what ever was in the bin. GM did use different suppliers. FWIW.
89  Camaro Research Group Discussion / Originality / Re: Carb Stud Length - '69 Cowl Air Cleaner on: March 11, 2013, 06:30:09 PM
Mike, thanks for the posting, that's excellent information and the photos help a great deal!  For completeness of topic and future reference, do you have, and would you post the measurements for the non-cowl stud as well.

 

1.505 Overall Length,machined raised portion in middle .265 long X .312 wide, threaded length .620 both ends
90  Camaro Research Group Discussion / Originality / Re: Carb Stud Length - '69 Cowl Air Cleaner on: March 11, 2013, 02:06:09 PM
Lloyd, your stud is a little too long. IMO. I can only measure mine from the flange up, but it is 1.500 from the top of the flange to the top of the stud. Mine appears to have a smaller unthreaded shank area above the flange. Original cowl hood wingnuts are plain steel and have small thumb wings, BTW. I have also included the correct short stud and chrome wing nut for non cowl hood cars, as well as the current repo AMK chrome wingnut compared to a known GM original which appears flash plated much like GM chrome valve covers.. Notice the thumb wings on the AMK wingnut are much bigger and extend to the inside more. I have heard that 67 427/435HP Corvette studs are the same, but I just measured 2 known originals, 1 a 6,000 Mile survivour and they are both 1.422 and 1.415 from top of flange to top of stud.
As far as I know mine is original, I have owned this RSZ28 since 1973.
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