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103289 Posts in 12153 Topics by 4689 Members
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16  Camaro Research Group Discussion / General Discussion / Re: Shift knob on: July 31, 2014, 09:26:01 AM
It's not even a GM part - it's a Hurst aftermarket knob.
17  Camaro Research Group Discussion / General Discussion / Re: My New '68 Camaro Z/28 Butternut Yellow on: July 31, 2014, 09:23:57 AM
JohnZ,
 Can I pull the belt and run it without? I here guys talk about deveining. I guess that means to pull the guts out of the pump. I would rather not do that. What can I do or not do? Thanx... Danny

You can run it without the belt if you like.
18  Camaro Research Group Discussion / General Discussion / Re: Original dealer info for 1st gens is available on: July 31, 2014, 09:20:44 AM
Absolutely, GM determined when a particular car was to be built based on their schedules, and their part availablilities and Fisher built it.  There wasn't really much on the fisher side of the plant that could result in a material shortage that wouldn't alos affect the GM side.  Maybe things like convertible and vinyl tops in certain colors, some interior peices, etc.  Most of fishers parts were sheetmetal stampings that were not specific to a certain vehicle, like a 302 engine, or an M22 transmission. I'm sure there were some things on the Fisher side that could delay a build, but most of them was probably on GMs side.

So was Fisher sort of like a supplier to Chevrolet in that Fisher's production was to produce bodies for orders placed by Chevrolet?

Yes. Retail customers didn't order BODIES, they ordered CARS. Chevrolet ordered the body needed to fill a dealer order from Fisher Body, completed the Trim-Chassis-Final assembly when they got the body, and shipped the car to the dealer. This business model confused people for 65 years, and Fisher Body Division was finally eliminated as a separate operation in GM's 1985 re-organization.
19  Camaro Research Group Discussion / Maintenance / Re: Running Hot? on: July 30, 2014, 10:00:35 AM
<< Well I was finally able to do some checking on the underhood temps.  I drove the Z for between 2-3 miles to get the engine up to temp.  The outside air temp was in the mid 80's.  While driving the temp gauge stayed right around the first quarter marking, maybe one mark up toward the half marking.  While idling in my driveway the gauge read right at the one half marking.  The engine would not hold a steady idle but slowly had the idle decrease until the engine died.  This happened 3-4 times.  While the engine was not running the temp gauge would increase until it was between the one half marking and the three quarter marking.  This I take to be normal due to heat soak.  
Here are the temps I recorded with an infrared gun:  

radiator hose at thermostat- 183, bottom radiator hose- 164  >>

The last line above are the only temps that mean anything, and they're normal - don't agonize over all the other external temps - they are what they are, and you can't change them. You don't have a cooling problem, you have a typical fuel percolation problem, aggravated by low E10 fuel boiling points. Insulating your fuel line from the frame to the carb will help, as will an aluminum heat shield that extends under both fuel bowls. E10 fuel boils at 150*F, and at extended idle, the fuel bowls get hotter than that.

20  Camaro Research Group Discussion / Decoding/Numbers / Re: Need Help Identifying GM Wood 2X Pantograph Model Part No.331707 on: July 30, 2014, 09:35:31 AM
If you chased that back far enough, you'd probably find that it's an old Ternstedt part number, from the days when they had an inside monopoly on die-cast ornamentation.
21  Camaro Research Group Discussion / General Discussion / Re: My New '68 Camaro Z/28 Butternut Yellow on: July 30, 2014, 09:25:31 AM
<< I read somewhere that you HAVE to have something in the top of the smog pump, or it will keep pumping into the manifolds and this is NOT good. Some kind of valve? True? What goes in this hole? Can I buy one? Can I run the engine without the belt attached to the pump? ... Danny >>

What goes in that hole is already there - it's a pressed-in pressure relief valve, to protect the pump in the unlikely event that the diverter valve sticks closed. The more common failure mode for the diverter valve is that it sticks open, pumping air into the manifold tubes all the time - that happens when the rubber diaphragm inside the diverter valve fails (and they all do eventually) and the valve then defaults by design to the open position, also causing a vacuum leak through the vacuum signal hose.
22  Camaro Research Group Discussion / General Discussion / Re: Original dealer info for 1st gens is available on: July 29, 2014, 10:52:08 AM

So what which car would have made it out the door first? Does your earlier trim tag indicate your car just left the fisher plant before his, but once it was at GM, his got done first? What is the build week of his car vs. yours?

The 1969 body number was assigned when the plant accepted the order for production, not when the body was built, so there could be a relatively short time span or a much longer span, depending on material availability, sales priorities, etc. Once the Fisher body was received at the Chevrolet Body Bank and the VIN was assigned, it would be unusual for the body release to the Chevrolet assembly system to be delayed more than a few hours.
23  Camaro Research Group Discussion / General Discussion / Re: Original dealer info for 1st gens is available on: July 29, 2014, 10:51:03 AM
So what which car would have made it out the door first? Does your earlier trim tag indicate your car just left the fisher plant before his, but once it was at GM, his got done first? What is the build week of his car vs. yours?

The body number was assigned when the plant accepted the order for production, not when the body was built, so there could be a relatively short time span or a much longer span, depending on material availability, sales priorities, etc. Once the Fisher body was received at the Chevrolet Body Bank and the VIN was assigned, it would be unusual for the body release to the Chevrolet assembly system to be delayed more than a few hours.
24  Camaro Research Group Discussion / Originality / Re: 67 Holley 3910 on: July 26, 2014, 10:08:44 AM
According to my info all reissues had 4 digits and aftermarkets did not have have GM part numbers on the horn.

Holley has also made (and still makes) re-issues with a GM part number and no date stamp so their resellers can date them to their customer's needs.
Who sells these re-issues?

In the Corvette world, it's Chicago Corvette (GrayGracy or MiszterCarb on eBay); don't know who they are in the Camaro world.
25  Camaro Research Group Discussion / Originality / Re: 67 Holley 3910 on: July 24, 2014, 10:22:34 AM
According to my info all reissues had 4 digits and aftermarkets did not have have GM part numbers on the horn.

Holley has also made (and still makes) re-issues with a GM part number and no date stamp so their resellers can date them to their customer's needs.
26  Camaro Research Group Discussion / General Discussion / Re: Air cleaner Decal needed on: July 23, 2014, 10:11:16 AM




What is the deal with the Vacuum can in the L88 pic. ?  There is no port.
[/quote]

That vacuum can operates the wiper door that covers the windshield wipers and linkage on '68-'72 Corvettes.
27  Camaro Research Group Discussion / Maintenance / Re: Running Hot? on: July 21, 2014, 09:26:30 AM
smog pump or AIR system not working properly, etc.?   It was a hot day, in the low to mid 90's.  None of my other cars, or truck, put out anywhere near the heat that my '69 Z does.  And yet the temp gauge still reads fine; could the temp gauge be inaccurate?

If your A.I.R. system is still functional and the rubber diaphragm in the diverter valve has failed (and almost all have failed), the valve defaults to the open position, which blows air into the exhaust manifolds all the time, under all conditions. That will cause hotter exhaust manifolds, without any affect on coolant temperature.

Rule #1 when diagnosing a potential cooling issue is to make sure you really have a problem before you start throwing parts and money at it; verify your temp gauge accuracy with an I.R. gun before you do anything else, as noted in the cooling article I posted a link to earlier.
28  Camaro Research Group Discussion / General Discussion / Re: Air cleaner Decal needed on: July 21, 2014, 08:40:46 AM
Tried all the places I could think of including Ebay and no luck yet.Must be a rarity.

It's more than a rarity - it never existed as a production item.
29  Camaro Research Group Discussion / Maintenance / Re: Running Hot? on: July 20, 2014, 10:31:18 AM
John Z has a good article on cooling systems in this site.


http://www.camaros.org/pdf/corv_cooling2.pdf
30  Camaro Research Group Discussion / Originality / Re: N34 Rosewood Question? on: July 20, 2014, 10:23:31 AM
I thought there was a darker N34 wheel used till approx 10/68? Almost a Walnut colour?
My N34 appears much darker than John Z,s, I wonder if there was production run differences?

That's correct - the first 3 months of production, the N34 wheel was "walnut", then in late November it changed to the lighter "rosewood" color, as noted here:

http://www.camaros.org/swheel.shtml#69
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