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61  Camaro Research Group Discussion / Originality / 1969 Camaro SB Exhaust Manifold Bolts on: September 09, 2013, 12:49:05 PM
When I purchased my '69 Z it had a few Day 2 parts installed including headers.  I located a set of date coded, original exhaust manifolds (and smog system) to replace the headers however I used new, commonly available replacement bolts. I have not been able to locate a photo showing close-up head details of assembly line correct SB exhaust manifold bolts and recently came across the photos below.  The head detail on these early bolts is similar to the reproductions however they do differ somewhat. Note a single ring and N stamping which I assume identifies the manufacturer (National?).

 - Has anyone come across these early bolts, are they assembly line correct or incorrect service replacements?

 - Does anyone have close up photos of original, assembly line installed exhaust manifold bolts?  

Reproduction SB Exhaust Manifold Bolts

Early Manifold Bolts - Original?

62  Camaro Research Group Discussion / Originality / Re: 1969 Oil Pressure Gauge Block Sender Fitting on: September 06, 2013, 09:25:13 AM
Lloyd, I want to THANK YOU!  Within a couple of days of you posting the pics of this, I was looking for a brass fitting for the pool and saw this fitting sitting in my misc brass drawer!  So now that I know what it is, it is now in my drawers of parts for my SS.  I just have to find that short section of oil line I saved someplace with the rest of the fitting on it Smiley

Glad to hear you located the fitting Kevin. Its a tiny, unique, and to me, important detail. 
63  Camaro Research Group Discussion / Originality / Re: NOS Idler Arm vs Factory Original on: August 01, 2013, 01:46:47 PM
Thanks for the feedback and photos. Its clear the NOS Idler Arm I located is a later, service replacement and differs somewhat from the factory original.  I located a nice original and installed that instead.

64  Camaro Research Group Discussion / Originality / Re: 1969 Z 28 pictures looking for input on: July 17, 2013, 09:17:27 AM
The photo details of your horn relay aren't great however from what I can see it appears the case is bright zinc or even polished. I can't see if it has the correct stamping however here is what it should look like.

65  Camaro Research Group Discussion / Originality / Re: 1969 Oil Pressure Gauge Block Sender Fitting on: July 15, 2013, 03:32:09 PM
I'm assuming you have a small block, so yes, it's correct.


Yes. (for a 302)
66  Camaro Research Group Discussion / Originality / 1969 Oil Pressure Gauge Block Sender Fitting on: July 15, 2013, 01:42:21 PM
I'm trying to determine the correct oil sender fitting (block side) for a 1969 Camaro with console gauges.  How does this one look and is it missing any pieces or does it appear complete?

67  Camaro Research Group Discussion / Originality / Re: Engine hook bolts on manifold on: July 14, 2013, 09:10:37 AM

I have never seen any assembly pics like that. My 1100 mile 70 Z had no evidence of that at all. It has orange paint on the plug wire stands that were done with a brush.

Charley, would love to see a close up photo of the brush work on the plug wire stands.
68  Camaro Research Group Discussion / Originality / Re: Exhaust manifold bolts. on: July 12, 2013, 12:16:47 AM
Yeah I got a kit from AMK and included everything including the French locks.

Hey Daniel, you have number handy? I haven't looked yet but I was going to see what I could find in the 69 AIM if is even in there.

Gary, be aware the french locks available from AMK and other parts vendors are made of stainless steel which is incorrect. The originals were stamped untreated steel. GM still sells the steel ones (GM part# 14081241) however the stamping has changed and they are not the correct appearance for our cars. I located used ones, treated them with Evapo Rust and they work well for an unrestored car.   
69  Camaro Research Group Discussion / Originality / Re: Engine hook bolts on manifold on: July 09, 2013, 04:12:26 PM
1. Were the intake bolt heads and/or lift hooks brush painted before or after installation? Is there any evidence of silver paint brushed on the intake manifold?
2. What shade and gloss (of silver) was used? Argent?
70  Camaro Research Group Discussion / Originality / Re: Engine hook bolts on manifold on: July 07, 2013, 10:22:35 AM
Edgemontvillage was referring to the engine orange on the head surface between the valve cover and intake manifold... ie. the upper part of the machined surface for intake gasket...  which normally would not get painted on such an engine (with aluminum manifold and aluminum valve covers)..

Yes, that's right. 
71  Camaro Research Group Discussion / Originality / Re: Engine hook bolts on manifold on: July 03, 2013, 09:01:39 PM
Not the clearest picture, but this gives you an idea what the shouldered bolt looks like.  Jerry MacNeish rebuilt/restored the engine.

Interesting details, dimpled (manifold) carb studs (?) and partially painted head on intake manifold plane.   
72  Camaro Research Group Discussion / Originality / Re: NOS Idler Arm vs Factory Original on: July 01, 2013, 01:18:08 AM
Lloyd does the NOS idler arm have a 'C' or an 'O' stamped in between the 2 frame mounting holes?

The NOS arm isn't stamped on either side of the bracket that bolts to the frame.
73  Camaro Research Group Discussion / Originality / Re: upper and lower control arm finishes on: June 28, 2013, 03:48:43 PM
Most interesting Scott and had not seen the thread you listed.
Hi John! I have looked at several survivors over the past few years and many have remnants of black paint on a-arm components. JohnZ communicated to me that a-arm assembly came into the plant painted with the a-arm, dog bone, bushings, and washers/bolts as the assembly. This picture was just taken last Friday at the Camaro Nationals of a survivor which shows paint on the a-arm components.

Paint is also present on the hard fuel line, was it also painted / oversprayed or was there touch up done on the car in the photo?
74  Camaro Research Group Discussion / Originality / NOS Idler Arm vs Factory Original on: June 26, 2013, 02:07:13 PM
I just purchased an NOS idler arm for my '69 Z. I have read there are some differences between the factory originals and NOS service replacements however the part I received was "missing" the cotter pin hole which struck me as a manufacturing defect. I was later told that NOS idler arms used an oval locking nut rather than the common castellated nut and cotter pin combination. Can anyone validate this observation?

75  Camaro Research Group Discussion / Originality / Re: GM 3877660 Water Outlet on: June 23, 2013, 02:18:44 PM
Here is a post from John in 2005 on the subject:

JohnZ Jul 13th, 05
"This is a great debate subject. I have the GM drawing for 3877660, released in 1965, and it says "Cast manufacturer's identification, part number and General Motors trade mark location optional." Three different suppliers made this part over the years it was in use, and each one put the part number in a different place. In NCRS Corvette judging, the pattern that emerged after observing thousands of known-original cars indicates that those used through 1969 had the number on the flange, and those used from late 1969-up had it on the top of the outlet neck. The current reproduction, made by Paragon, has it on the outlet neck. My original 02D '69 Z/28 has it on the flange."
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