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Messages - Mark

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1
General Discussion / Re: Kick Panel Speakers - spacer
« on: June 05, 2018, 03:47:51 AM »
Look at the speaker cover in the picture above, the top of it is about twice as deep as the bottom, which is probably to account for the spacers.  The speaker must lean outwards slightly at the top to hold the frame of the speaker off the inner portion of the body structure forward of the door.  The spacer lengths are probably equal to the depth of the sidewalls of the speaker grille cover. 

2
Restoration / Re: Convertible top differences
« on: June 01, 2018, 09:07:10 PM »
Yes the front bow is the same, the hinge between the front rail and the one over the quarter windows is different (which probably makes the entire front side rail different as the hinge is welded to one or the other rail), and the operating arms that push and pull the top up and down are different.

3
Decoding/Numbers / Re: Numbers matching or not - 3932388 block
« on: April 25, 2018, 04:56:54 PM »
Should be a partial VIN on the back of the block above the oil filter in the rough casting area just forward of where the bellhousing bolts to the block.  Very hard to see with the block in the car even with good lighting back there.

4
Originality / Re: 69 SB Fuel Line Routing
« on: April 21, 2018, 02:11:56 AM »
That fuel pump look like a marine unit, that small vent line usually gets connected to the air horn of a marine carb, so if the pump diaphragm ruptures any leaking fuel goes into the carb and gets burned instead of dumping into the bilge and blowing up your boat.

5
General Discussion / Re: 69 Convertable inner front fenders
« on: April 21, 2018, 02:00:24 AM »
69 Firebird and Camaro Front Shakers.  Firebird on the left, Camaro on the right, lower leg on the Camaro one is 3-1/8" long, firebird is shorter at 1 3/4" due to the difference in the front fender lower corner parting lines.  Firebird also has that extra upper bracket, which is the most obvious clue.




6
Decoding/Numbers / Re: Mixed N vin and LOS trim tag?
« on: January 08, 2018, 04:54:18 AM »
No body ever was made at one plant and shipped to the other for final assembly.  For one thing the Norwood plant was a Chevy plant with a separate Fisher Assembly plant in the same building, and LOS was a GMAD plant where the Fisher and Chevy assembly functions were all on the same line.  If the car has a VIN tag from one plant and a trim tag from another one of the tags has been swapped.  If its a VIN that was swapped, 90% of the time your dealing with a stolen car, 100% of the tiome the car is going to cause the owner issues with the State DMV if an inspection is ever done and the DMV inspectors do their job.  Which makes the car completely worthless as a car, it has scrap and parts value only.  Don't even consider buying this car.

7
For any of you with problem with seeing the embedded photobucket images since they changed their policy.  There is a fix if you use Google Chrome and a similar one if you use fire fox.  Link is below:

https://chrome.google.com/webstore/detail/photobucket-embedded-imag/ogipgokcopooepeipngiikdkpmcpkaon

Should make all embedded images visible again, may not be necessary if you uploaded an image to the site, but if it's linked right off of photobucket it does work to make them visible again.  Don't know if you can then download them or not.  I use IE (yes I'm old) so I can't use it, but I do know it works.

8
Restoration / Re: How did the factory install convertible tops so fast?
« on: August 24, 2017, 08:03:56 PM »
The jig had the complete frame and tack strips on it, The assembled frame got mounted to a fixture that was essentially the same shape and dimensions as the windshield header and rear quarter panel sections.  They mounted the frame to the jig, and the fabric to the frame.  Then mounted the whole assembly in the car, and made all the final adjustments on the line as the body moved along thru the trim shop.

9
Restoration / Re: How did the factory install convertible tops so fast?
« on: August 23, 2017, 12:29:35 AM »
I had a buddy at work that installed convertible tops on Pontiacs back in the day.  They assembled to tops on jigs next to the assembly line and had several available at anyone time.  The would actually install the top and then travel with the car as it continued down the line until the top was finally adjusted and smoothed out. He said they could install the entire top onto the car in about 15 minutes.  Once it was on they would travel back to the start of the trim line and pick up the next convertible and repeat the process.  There were 2 or 3 different teams dedicated to just convertible tops that worked on the cars as they came down the line.

10
Garage Talk / Re: My First Camaro - What was Yours?
« on: August 18, 2017, 07:36:57 PM »
Mine was a 68 LF7 3spd Saginaw with console, Teal blue with standard blue interior, white D90 sport stripe.  Bought it in 73 from a local bone yard for $250.  It had been punched in the rear between the taillights, looked like it slid into a pole or tree.  Fixed it up and drove it for my junior and senior HS years and some of my Navy years.  Blew the engine up (cam broke in 3 places, crank in 2 and punched a couple of rods thru the block) around 76 or 77 and replaced it with a 350 from precision motor rebuilders.  My brother sort of commandeered it while I was in the Navy.  Heres a picture from 78 or 79 looking kind of haggered.  Should have put the cowl hood on before it was painted.


11
General Discussion / Re: 67 big block convertible
« on: June 06, 2017, 04:22:21 AM »
All 67 VIN tags were supposed to be stamped with the delivery date by the dealer for warrantee work, it consists of the month and the last digit of the year (May of 67 in this case, 057).  The dealers were supposed to stamp them from the front side (very few actually did it).  When they are embossed from the back it means it was done by the factory (norwood in this case) and it usually indicates a car ordered for and destined for some interim use by GM prior to being sold to the public.  Cars like zone cars, executive cars, pace cars, show cars, engineering or sales vehicles all seem to have the rear embossed delivery date code on the VIN.   

The 67 Pacecars were technically sent to the Indianapolis Zone Office and the warrantee period started immediately so all of them sent to the zone have a rear embossed delivery dates on the VIN tags so that GM wasn't covering them for a longer period of time than they needed to no matter if they were used for the month of May 67 and sold immediately, or if it took the dealers till 68 to sell them.

You would have to get the NCRS sales record to see where this car was originally sent to to try and get an idea of what GM used it for.  It will probably come back as one of the various zone offices.

12
Mild Modifications / Re: Temp gauge w/electric fans
« on: May 27, 2017, 08:11:38 PM »
Factory and all temperature sensors used in these cars are essentially variable resistors that change the resistance between the single wire connector and the shell of the gauge as the coolant temperature changes. Resistance starts high, and goes lower as the coolant heats up.  This changes the current flow in the gauge and the gauge moves upscale as the temperature increases, and down scale as the coolant cools off.  Because the gauge circuit relies on the engine block ground as part of the circuit, if you grounded the fans to the block, when the fans come on the voltage difference between the block and the battery voltage changes (becomes less) because of the current flow thru the fans raises the blocks voltage potential which screws up the gauge reading.  If the gauges going weird on you corresponds to the fans starting its a 99% chance that is the reason.  Run the fan grounds back directly to battery ground.

13
General Discussion / Re: Drive it or trailor it?
« on: April 18, 2017, 02:08:13 AM »
These cars were peoples every day drivers 50 years ago (seems like a long time) driving them doesn't hurt them, that's what they were made for.

14
General Discussion / Re: I'm pretty sure this is illegal.
« on: March 24, 2017, 12:29:25 AM »
Technically the dynacorn body is a repair part.  It was never part of a GM manufactured vehicle and never had a VIN of its own.  It is a replacement for a failed component, either thru rust or damage.  It is a very fine line but legally its no different than a replacement fender in the grand scheme of things.  It is totally illegal to swap a VIN from one GM manufactured body that had a VIN assigned for your damaged GM manufactured body because both were originally part of a complete vehicle built by GM in compliance with the regulations of the day.  Not saying it is right or wrong, just that it can be done without going to jail.  Does it affect the value of said repaired vehicle when your done? You bet it does and it should be disclosed but probably isn't most times.

15
Originality / Re: 1969 Camaro vanity mirror
« on: January 25, 2017, 03:06:19 PM »
They are like door trim clips, you attach them to the mirror and then press them into the holes in the Masonite board and the little tangs hold them in place.  Got to be careful you don't crack the mirror when your pressing them onto the visor though.  The holes may actually already be there in the Masonite and you just have to find them and cut the vinyl/fabric away.  I put one in my convertible but it was like 30 years ago.  I don't remember having to drill holes in the Masonite board to install it though.

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