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112144 Posts in 12883 Topics by 4932 Members
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3721  Camaro Research Group Discussion / Decoding/Numbers / Re: Fuel pump codes on: September 18, 2006, 10:08:24 AM
Photos post best at 640x480 - that way they'll fill the screen, but won't require scrolling.  Smiley
3722  Camaro Research Group Discussion / Originality / Re: EPDM coating on: September 17, 2006, 09:38:39 AM
The old coating for service sheet metal parts was dip-prime, the current coating is E-coat. I'm not familiar with the parts currently being sold over the GM parts counters.
3723  Camaro Research Group Discussion / General Discussion / Re: X Codes on: September 17, 2006, 09:33:20 AM
Did all the 69 super sports have a return fuel line? Thanks Jim

The 350 (L-48) and the two hydraulic-lifter 396's (L-34/L-35) had return lines, the L-78 did not.
3724  Camaro Research Group Discussion / Originality / Re: Cylinder head #3947041 on: September 16, 2006, 02:26:01 PM
I think you'd have a hard sell with 041 heads on a '69 Z/28.
3725  Camaro Research Group Discussion / Originality / Re: EPDM coating on: September 15, 2006, 09:46:21 AM
There were many different (paint) coatings, and many different gloss levels of black. Items like the subframe and control arms were painted by their suppliers, and parts like bumper brackets, engine accessory drive brackets, rear shock plates, and things of that nature were received raw and were dip-primed or flow-coated with black primer after cleaning and phosphating at the assembly plants. Front sheet metal (hoods, fenders, headers, valances, inner fenders, radiator supports, grille supports, etc.) were also received raw, and were dip-primed or flow-coated with black primer after cleaning and phosphating.

There's no "EPDM" coating - what you're referring to is "E-coating", which was the successor process to dip-priming and flow-coating; E-coating is also a dip-prime process, but uses positive and negative electrical charges in the paint and on the parts to get a more uniform coating.

Service sheet metal in the 60's was shipped raw in racks from the stamping plants to the Regional Parts Depots; each depot had its own dip-prime system for painting those parts before boxing them for storage, and that same method is used today, except the old dip-prime systems have been replaced with E-coat systems.
3726  Camaro Research Group Discussion / Originality / Re: 1969 Z/28 spare tire and rim on: September 14, 2006, 10:47:43 AM
Yes, they did - all five wheels and tires were identical - 15" x 7" rally wheels with either Goodyear Wide Tread GT or Firestone Sport Car 200 E70-15 tires.
3727  Camaro Research Group Discussion / Originality / Re: N34 Sport Steering Wheel on: September 14, 2006, 10:44:15 AM
Early '69 cars with RPO N34 specified got simulated walnut wheels, then the wheel changed to simulated rosewood; both colors were molded plastic rims. The only genuine wood-rim steering wheels were RPO N32 teakwood on '65-'66 Corvettes.
3728  Camaro Research Group Discussion / Originality / Re: '68 BB chrome valve cover question ?? (or pics if anyone has some) on: September 13, 2006, 10:35:23 AM
3. Not sure about this one since my retainers and screws have been replaced, but I believe the "TR" screws are not chrome plated, but the retainers are. JohnZ will have to answer this one for you.

The chrome covers used on the Corvette had zinc/cad-plated bolts, and the small triangular reinforcements under each bolt were also zinc/cad-plated (not chrome).
3729  Camaro Research Group Discussion / Decoding/Numbers / Re: RE: 1969 Z28 (The Real Thing ?) on: September 13, 2006, 10:21:26 AM
With that VIN and body number, it was built in August of 1969, not 1968.
3730  Camaro Research Group Discussion / Decoding/Numbers / Re: Stamping question... Hidden Vin ??? on: September 11, 2006, 11:07:52 AM
I think JohnZ told me once that the same machine stamped the hidden VIN at both places, and had to be used twice prior to setting to the next sequential VIN. Therefore, it would make sense that the hidden VINs match. If I'm mistaken, maybe he'll be kind enough to tell me again!

That's correct - same operator, same machine made both hidden VIN hits.
3731  Camaro Research Group Discussion / Decoding/Numbers / Re: What the heck is this stamping on: September 08, 2006, 01:34:47 PM
I have a question for JohnZ: How were the hidden vin #'s applied? Was it a gang holder with individual digits that had to be changed by 1 as the line moved? Did an assembly line employee hold it with one hand and "smack" it with a big hammer? Was there a block used on the back side to absorb the impact? I notice on Rich's picture above that it looks like the holder was hit twice and turned slightly between blows. I really think it couldn't have been that unsophisticated as there would be room for all kinds of error.



No hand-held stamps or holders. The hidden VINs were done with an auto-indexing "egg-stamper" made by the George T. Schmidt Co. in Chicago; it was suspended from overhead, and had two air cylinders on it - one clamped the stamper on one side of the panel with the anvil on the other side, and the other one cycled the segmented "egg" with the dies on it. It cycled in one direction for the stamp on the cowl, was relocated to the heater hole, and cycled the other way for that stamp. The operator then pushed a lever and the last digit segment indexed ahead one character for the next unit. The one in the photo was hit twice.
3732  Camaro Research Group Discussion / General Discussion / Re: Brake Bleed tool suggestion ... Motive vs. MityVac ???? on: September 08, 2006, 01:27:08 PM
No-brainer - the Motive Products pressure bleeder is the best sixty bucks you'll ever spend; I've fought bleeding stubborn Corvette 4-piston disc brakes for years, and the MP pressure bleeder makes them a piece of cake and a one-person ten-minute job. I've tried all the other stuff (MityVac, Phoenix Injector, etc.) and none of them hold a candle to the MP setup.  Smiley
3733  Camaro Research Group Discussion / Restoration / Re: starter motor for 1967 rs/ss 350 manual trans on: September 07, 2006, 09:42:30 AM
Also understand that if a rebuilt starter has been installed at some point in the car's history, the stamping on the armature case could be almost anything; when a starter goes through a commercial rebuilder's operation, they're re-assembled based on matching functional parts, not numbered parts. Many commercial rebuilders these days grind the numbers off starters and alternators to eliminate confusion.
3734  Camaro Research Group Discussion / General Discussion / Re: site gone! on: September 07, 2006, 09:32:23 AM
well I've tried everything from checking my settings to different search engines. I would appreaciate if someone could inquire about this to the site administrator to see if somehow I have been banned from the site by accident. My profile name is johnny67, and email is Huh

I'd check with your ISP first - their server may not be able to resolve the DNS for for some reason.
3735  Camaro Research Group Discussion / Mild Modifications / Re: Replace Powerglide with a 4 speed Muncie on: September 06, 2006, 03:58:06 PM
The first photo (the frame bracket, not the rubber mount) should have the small hole for the clutch return spring.
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