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102494 Posts in 12091 Topics by 4669 Members
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31  Camaro Research Group Discussion / Originality / Re: Early 1968 Z/28 original tires? on: June 03, 2014, 10:31:24 AM
It was an E70x15 according to the air pressure sticker, being available only on the Z28 I would call it special.

By the way the early 69 Z's list the on their Window Sticker a no cost 15" tire option.
PU6 AD - E70 x 15 Tiires
This was dropped sometime between N522xxx and N528xxx based on the Window Stickers in JM's book.
32  Camaro Research Group Discussion / Decoding/Numbers / Re: Wanting to buy new leaf springs. on: June 03, 2014, 09:43:12 AM
IF yours are not pitted or broken then you can have them re-arched for $100-150.
A customer of mine has had 2 sets re-arched one for a Z and one for a L65 4 spd conv both sets sit perfectly.

Here is a side by side of comparison of original Z28 springs vs Bob Harris's (Camaro Specialties) springs, they are extremely close,
The leaf ends are not quite as thin on the ends, the rectangle pockets are not quite as deep and the spring clamps are not the same gauge (thinner) - these are worlds above anything else available the other reproductions are not ANYWHERE CLOSE!










33  Camaro Research Group Discussion / Originality / Re: Early 1968 Z/28 original tires? on: June 03, 2014, 01:29:44 AM
What was the P28 option, priced at $90 for 1968 models,... "Wheels, 15" and special tire (added 03JAN68 to AIM)"

There is a guy on the Yenko site with a 68 L78 4.56 or 4.88 car that has the original window sticker and 15" tire option, pretty sure it has DF's & wide tread GT's, someone else remembers a car (was def not a Z as it either had air or was a real auto car) with the 15" tire pressure sticker but had discounted it as being wrong earlier in their life.    
34  Camaro Research Group Discussion / Originality / Re: BB Intake manifold studs on: June 02, 2014, 09:53:57 PM
Is your ac brace through bolted, meaning the bolts that go through the braces also retain the intake?
Or are there studs and the ac bracket is on the studs?
That may be the answer I need, as BB camaro engines were not coded differently if they were to be in a car equipped with A/C.
35  Camaro Research Group Discussion / Originality / Re: BB Intake manifold studs on: June 02, 2014, 07:48:03 PM
What about quadrajet automatic cars? L35?
36  Camaro Research Group Discussion / Originality / BB Intake manifold studs on: June 02, 2014, 02:16:54 PM
The AIM shows that the automatic equipped L78's had two studs on the drivers side of the engine (part of assembly) for mounting the idle stop solenoid, were these (studs) on all auto BB or only holley equipped auto BB's?     
37  Camaro Research Group Discussion / Originality / Re: 1969 Front Spoiler to Lower Valance Bolts on: June 01, 2014, 11:02:05 PM
Have we been giving lengths as overall?
I sold MRO supplies for Bowman fastener company and we always gave measurements from the seat (bottom face) of the bolt.
I would say that is 1/2" long.
38  Model Specific Discussions / Trans-Am Camaros / Re: 1968 Z road test on: June 01, 2014, 12:00:40 PM
A 4.10 M20 combo even show room stock would have been quite a bit quicker...
Heads up race from a dead stop with two good drivers you would think the 3.73 M21 was missing a plug wire.
39  Camaro Research Group Discussion / General Discussion / Chevrolet's process for having another run of parts manufactured on: May 31, 2014, 11:54:56 AM
Specifically about the Derby Centers.
I hate to make assumptions however I have been involved with design approvals during my industrial career and I know that artists can be difficult.

I am going to assume that a designer is intimately involved with the first run of parts, especially a trim item such as a derby center cap which was released with the all new 68 vette. I believe a designer would have had the yea nay regarding the aesthetics of the initial run Derby Centers because the photos I have of it (vette) being developed show a number of different centers being considered.
 
How many would have been manufactured for the first run?
AND

After the initial run who would be in charge of the next buying order if the part was going to be used during production? Designers or someone more interested in the bottom line?

How would the process go?
Would a current sample be provided with a set of drawings and would the sample be used as a casting model (to make new casting dies) to submit for approval?
Or would the part be hand manufactured from drawings like it was originally?
 

40  Camaro Research Group Discussion / Decoding/Numbers / Re: Zeroing in on X code start up on: May 31, 2014, 08:46:37 AM
co
James, so the letter(s) denoted interior color and the number the model/trim, meaning only cars with a black interior should have X(letter) on the rear seat/shelf structure, regardless of the trim tag X codes? So for example, a red interior SS350 would have R5, not X5?

From what has been observed that is correct, pretty certain it is a painting note.

NOTE that any interior with black painted trim ie Orange HT, Yellow HT, White HT, Parchment, and of course Black and black HT will have an X.
41  Camaro Research Group Discussion / Decoding/Numbers / Re: Zeroing in on X code start up on: May 30, 2014, 11:55:31 PM
DG7 is for Dark Green painted interior trim
X7 is for Black interior
B7 is for Blue
R7 is for Red
White HT would have black painted int trim which is why it has a X7
42  Camaro Research Group Discussion / Decoding/Numbers / Re: fake protecto plates heard any stories on: May 30, 2014, 11:52:30 PM
totally differnet types of inks one is a transfer like a carbon copy using impact printing, and the other is either non impact printed or written ink, the stuff in build sheets doesn't come out even using lacquer thinner...
My brother in law did a lot of check fraud investigations and he let me in on what they are doing... if you use a ball point pen to write the name and info on the check it can't be done... the impression breaks into the paper, the problem with computer generated docs are that it is non-impact printing and doesn't leave an impression on the paper.
43  Camaro Research Group Discussion / Originality / Re: engine stamps on: May 30, 2014, 06:02:39 PM
I know it's a old post just found it, look at the 9 in the VIN. Original stamp...

Yes there are many LOS stampings that look like that, Charlie has a pic of some good examples another that comes to mind is the 9000 mile garnet red car which also has the different size numbers it's VIN derivatives.
44  Camaro Research Group Discussion / Decoding/Numbers / Re: fake protecto plates heard any stories on: May 30, 2014, 01:36:03 PM
Yes, there are plenty of fake POP's, along with window stickers (most of the time the ECL codes are way off) and build sheets although factory build sheets are difficult to get correct as the machinery used isn't easily duplicated regarding the deep purple/blue transfer color used. Plus the fact that the paper chemistry is not anywhere close to what has been available in the last few decades.

If I were purchasing a rare car with "original documentation" I would have a clause in the contract where I have the option at my expense to have the real paper work tested for authenticity. The clause alone may be enough to scare off a potential fraud.
45  Camaro Research Group Discussion / Decoding/Numbers / Re: Zeroing in on X code start up on: May 29, 2014, 02:59:17 PM
There is an 11A car with a large tag it is an unrestored HO Z28.
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