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111411 Posts in 12826 Topics by 4913 Members
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46  Camaro Research Group Discussion / General Discussion / Re: 15" X 7" Rallys clear everything on a '68 on: January 09, 2015, 11:21:15 AM
I used to rum FW rally wheels on my 68 years ago before I restored it. I had no problems with the wheels. You might find a p series tire that would have the same rolling diameter as the E70-15 with the correct width....Joe

The 215/65-15 is about as close as you're going to get to the original E70-15 size appearance-wise; the E70 was 26.4" in diameter, and the 215/65 is 26.0". My all-original '69Z (stock springs) had 235/60-15 T/A's on it when I bought it, and both fronts rubbed at 12 o'clock. I swapped them out for a set of 215/65 T/A's, and no more rubbing.
47  Camaro Research Group Discussion / Originality / Re: Correct Dip stick on: January 07, 2015, 12:51:41 PM
<<
As far as the correct 67 Big block dipstick tube, The parts list states 3899640 for 396/427 except HP. I could not find a tube for HP. Is it the same tube?
>>

Which "parts list" ?

48  Camaro Research Group Discussion / Decoding/Numbers / Re: Motor vin stamp vs. transmission vin stamp on: January 07, 2015, 12:43:33 PM
I had read some where that it was due to the alternator being relocated to the passenger side for 69. The alternator had to be removed to stamp the vin.
Buddy

That's one of the great misunderstandings that surrounds the VIN derivative location issue; the engine arrived "bare naked" from the engine plant, and the alternator was installed (with all of its mounting bracketry) on the plant's Engine Dress Line, and the process sequence was at the plant's discretion. For some reason (which we'll probably never know), they elected to change the process and relocate the VIN stamping work element to AFTER the alternator installation. That relocation of the VIN from the block pad to the oil filter area required Engineering approval, but I've never seen anything that documents it.
49  Camaro Research Group Discussion / Decoding/Numbers / Re: Transmission Date Codes... on: January 04, 2015, 02:04:16 PM
Since apparently the same date coding applies to transmissions produced by several different plants, the code requirement must have come from a higher level GM directive.  Do you have any idea why transmission date coding differs from the date coding used on most other parts, differing even from other major parts like engines and differentials??

I have no idea - apparently someone at Muncie had a reason to code it that way, but we have zero records from Muncie.
50  Camaro Research Group Discussion / Decoding/Numbers / Re: Transmission Date Codes... on: January 03, 2015, 11:35:31 AM
Let me see if I can find any documentation on it.  I will post it if I can find it.


It's probably in an obscure old issue of Chevrolet Service News - that's where stuff like that was usually published.
51  Camaro Research Group Discussion / General Discussion / Re: Willow Run plant about to see the wrecking ball...? on: January 03, 2015, 11:09:08 AM
I had a Phoenix ($450!) and a Citation.  Great cars, IMO. And living in the north, FWD was a big benefit as was the room in a 4-door hatch. 
I always wanted one of the X11 or Phoenix SX versions - they were fast in their day.

I had a two-tone red/cream Citation and my wife had a metallic brown/black vinyl top Buick Skylark - both were 2.8 V-6's, never had any issues with either one; great winter cars.
52  Camaro Research Group Discussion / Decoding/Numbers / Re: Motor vin stamp vs. transmission vin stamp on: January 02, 2015, 03:14:01 PM
The pilot bearing was installed at the engine plant, before they installed the flywheel, clutch, and bellhousing.

There are several potential explanations for differing formats between the two VIN derivatives, most likely related to individual operator work assignments and how they changed during the year as manpower adjustments were made or as Engineering specs for each stamp were revised. Unfortunately, we don't have those records. I've always been baffled by the VIN moving in 1969 from the pad to the oil filter - the plant controlled when the alternator was installed, so they must have had another reason why they took it off the pad to the oil filter area - we don't have those records either.
53  Camaro Research Group Discussion / General Discussion / Re: Willow Run plant about to see the wrecking ball...? on: January 02, 2015, 02:35:38 PM
We built the Citation "X"-body at Willow Run, Tarrytown, and Oklahoma City (each plant also built either the Buick Skylark,, Pontiac Phoenix, or Oldsmobile whateveritwas).

Oldsmobile Omega!  Wink





Paul

Thanks - I edited my original post.  :-)
54  Camaro Research Group Discussion / General Discussion / Re: Willow Run plant about to see the wrecking ball...? on: January 02, 2015, 01:57:30 PM
I thought The Citations were built at Tarrytown.

We built the Citation "X"-body at Willow Run, Tarrytown, and Oklahoma City (each plant also built either the Buick Skylark,, Pontiac Phoenix, or Oldsmobile Omega).  Tarrytown was the only plant that didn't have a full immersion/dip ELPO prime system - they just sprayed primer, and their "X"-cars rusted out first.  :-(
55  Camaro Research Group Discussion / Originality / Re: DF rally wheels on: December 29, 2014, 01:23:56 PM
I think I read some where that GM was putting out 600 Camaros a day???

912 per day from Norwood, and 280 per day from Van Nuys = 1192 per day.
56  Camaro Research Group Discussion / Decoding/Numbers / Re: Trim tag and engine stamp opinion on: December 29, 2014, 01:16:38 PM
Not possible. Clearly a restamp. No DZ engines were built at Tonawanda.
57  Camaro Research Group Discussion / Mild Modifications / Re: Hub Centric Adapters on: December 27, 2014, 11:43:01 AM
<<
I read the earlier thread about mounting Torque Thrust II's on a 67 z/28 but no source for adapters was given. I my case I have a 69 Z with TTII's made in the mid 90's. I've tried the use of conical lug nuts to achieve a better concentric fit and then switch over to the long necked lug nuts but it's quite hard to repeat that successfully. I've contacted numerous Wheel/Tire stores but no one (not even American Racing) offers concentric adapters for my wheels and car. My measurements indicate a 70.5mm ID with a 85.5mm OD and .25inch thick would be good. It seems that I'll have to have custom ones made, but before I do that I thought I'd ask this august body for any other suggestions. BTW, the tires and wheels have been professionally balanced and checked for roundness and that helped but just not enough. Up to 60 mph all is ok, but after that the vibration get's obnoxious. I also tried original YH wheels that when installed work perfectly. Thanks.  Smiley

Tires can be perfectly balanced and still cause vibration, also known as "smooth road shake" due to tire construction variables that don't show until the tire is loaded with vehicle weight.

Find a shop/dealer with a Hunter GSP-9700 Road Force Balancer (go to www.gsp9700.com and use the locator feature - there's one near you) and have them check out your wheels/tires - it checks both lateral and radial runout, balance, and response to full road force load at speed, and its diagnostics show the operator how to optimize it by moving the tire on the rim.

Use of adapters/spacers is a BAD idea. Use the lug nuts the wheels were designed for.
58  Camaro Research Group Discussion / Originality / Re: YH Ralley Rims on: December 27, 2014, 11:17:42 AM
John,

Are you saying the argent silver paint should be 'semi-gloss'?   

I thought argent silver paint is standard gloss... but of course, not buffed or polished so the wheels might appear to be 'semi gloss' in finish...

Yes - the argent silver is certainly not "glossy" - it was just ordinary wheel enamel; see page 206 in the finish specs appendix in Jerry's book.
59  Camaro Research Group Discussion / Originality / Re: YH Ralley Rims on: December 26, 2014, 10:50:49 AM
<< I want to pick up the paint for my ralley rims that I'm going to paint. I'm not sure about the finishes, should the back be a semi gloss Black and the front a semi-gloss Argent Silver ? >>

Yes - see photos below of the back of an untouched original rally wheel, with small foggy areas of silver overspray that came through the slots when the face of the wheel was painted.
60  Camaro Research Group Discussion / General Discussion / Re: car that lost its barn! on: December 26, 2014, 10:36:42 AM
So in 67 did they still have the option for the spinners?

No, they didn't. One of the first MVSS (Motor Vehicle Safety Standards) regulations in 1966 (sponsored by activist Ralph Nader) banned "winged projections" on wheels or wheel covers, as he felt that it constituted a hazard to pedestrians.

BTW, no true Corvette knock-off wheel ever came off if it was installed correctly; people didn't read the instructions or let tire shops who didn't have a clue take them off and put them back on, and that caused problems.

After 1967, sets of Corvette knocik-off wheels sold over the parts counter came with large hex nuts instead of 3-eared spinners, and a box-end wrench to whack with the knock-off hammer - see photo below.
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