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104472 Posts in 12233 Topics by 4716 Members
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76  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.
77  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!

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!
78  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)


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.
79  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.
80  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.
81  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
82  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.
83  Camaro Research Group Discussion / Originality / Re: Carb Stud Length - '69 Cowl Air Cleaner on: March 11, 2013, 11:12:16 AM
I wonder if the wing nut on my original car is correct? Were all wing-nuts created equal?

No, original 6 cylinder wing nuts have a flat bottom, pretty sure I have a correct 1 for Lloyd
84  Camaro Research Group Discussion / Originality / Re: Carb Stud Length - '69 Cowl Air Cleaner on: March 10, 2013, 02:46:19 PM
In the AMK products catalog it shows the stud with part 3747933 as 1/4 20 x 1 5/8 OAL. This part number of the stud # 3747933 is listed in the cowl induction section of the AIM. This length of the stud appears to match the original engine photo of the # 3 ZL1 camaro in a book I have.

AMK studs are not correct, they are close but slightly shorter, I just got 1 for a Restoration I am doing on another 69Z, the original correct production line installed GM stud is over 2.25 and it looks goofy as it sticks through the wingnut quite a bit when the lid and filter is installed.
 I will take a picture of mine and repost Monday, my Z28 is at the shop.
85  Camaro Research Group Discussion / Originality / Re: Carb Stud Length - '69 Cowl Air Cleaner on: March 10, 2013, 09:38:08 AM

The stud in the photo looks correct for a cowl hood car, however I think your wing nut is not the original, it looks to bulky in the wing thumb hold area. The wing nut should not be chrome, and the stud ( i think) is like a dull black phosphate. I had changed mine many years ago ( put a chrome lid and stud/nut off a non cowl hood car) and in going through my original kept parts for my car ( reinstalled), just came across it and the wing nut, ( as well as the lid) I will snap a picture Monday and repost it for you. 
86  Camaro Research Group Discussion / Originality / Re: RPO U17 - firewall hole size on: March 04, 2013, 03:37:28 PM
The Oil Line on a 02B Van Nuys Z28 I am restoring is just above the speedo cable retainer clip hole, and it is 1/2" diameter.
Does any one know the correct routing on the interior of the car? Does it go through the firewall mat, or between the Mat and firewall ? Also does it just loop over the heater box and slightly left of the defrost duct? or does it loop under the heater box? Car was pretty original before I took it apart, still has the GM tag on the gauge cluster, and it is ink stamped Jan 23/69  026?
 Does any one know if the low fuel warning lite socket plugs into the guage cluster and where? Thanks.
87  Camaro Research Group Discussion / Originality / Re: 1969 Z/28 motor mounts on: February 23, 2013, 11:02:47 AM
The Lucas restoration photos and others have had the drivers side mount changed sometime in the cars history, probably the engine mount recall program GM had back in 69 by GM dealers . Very common to see that type mount, the original type mounts I posted are very rare to see, especially the drivers side as it allways broke due to Engine Torque.
 When I ran the Corvette/Camaro shop we put lots of headers on and had to manipulate ( Bend) headers into proper postion lots of time. Put the car on a hoist and insert  long 2x4 trimed to fit into the collector and get someone to help you carefully pull down on the 2x4 gradually until you have the clearnce needed. You would be surprised how easily they will move. The trick is to gradually pull so as not to kink tubes or break welds. Done it lots, it works.
88  Camaro Research Group Discussion / Restoration / Re: Vigilite Light Monitoring System Fiber Optic Cable on: February 21, 2013, 01:28:30 AM
Also Big Fat Buicks/Olds etc. I think Corvette Central or Paragon offer new cables for corvettes repo -
89  Camaro Research Group Discussion / Originality / Re: 1969 Z/28 motor mounts on: February 17, 2013, 05:59:10 PM
No Offence Taken., I was just clarifying. No the mount is not locking, but I do have the anti/lift/locking plate and through bolt/spacer etc. The Locking Plate is repro from Heartbeat, but the bolt and spacer are original, as are the 3 longer captive washer hold down bolts.
90  Camaro Research Group Discussion / Originality / Re: 1969 Z/28 motor mounts on: February 17, 2013, 03:06:23 PM
.. also, from the latest photos posted of a supposed-original 3939728 mount, it doesn't appear to be 'locking'.   Was that a typo in your post?  or am I missing seeing something in those photos?

It is not "supposed-original", it IS a real "ORIGINAL" Production line installed Z28 Drivers side Mount.
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