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107639 Posts in 12512 Topics by 4813 Members
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3736  Camaro Research Group Discussion / Originality / Re: X77 dash wood grain on: July 09, 2006, 09:23:30 AM
Didn't Z23 specify special interior trim with comfort weave vynl seats and molded door panels?

Nope, that was the RPO Z87 deluxe interior, which included the Z23 items plus the Comfortweave seats, molded door panels, wood-grain all across the passenger side of the dash, trunk mat, hood insulator pad, etc. The Z87 deluxe interior carried a different trim combination number than the same color standard interior on the cowl tag, so you can tell by the trim number whether or not the car originally had a standard or deluxe interior.
3737  Camaro Research Group Discussion / Originality / Re: What were the original nuts used on the '69 rear spoiler on: July 09, 2006, 09:13:31 AM
My unmolested original 02D Norwood Z/28 with factory D80 has domed "acorn" nuts across the rear, and hex nuts with integral conical washers across the front - photo below.  Smiley
3738  Camaro Research Group Discussion / Decoding/Numbers / Re: Interesting date on the Trim Tag on: July 08, 2006, 10:29:45 AM
I started my GM career at Willow Run in 1964 as a Production Foreman, when we were building the Corvair and Chevy II together on the same line (50-50 mix) at 65 per hour; left in 1966 for the Chevrolet Pilot Line in Flint.
3739  Camaro Research Group Discussion / Decoding/Numbers / Re: Paint code question on: July 08, 2006, 10:23:12 AM
Yes, that's correct - Cortez Silver with a black standard interior.
3740  Camaro Research Group Discussion / Decoding/Numbers / Re: X code question on: July 08, 2006, 10:20:43 AM
The X44 code means the car was a small-block non-Z/28, non-SS without the Z21 Style Trim and without the Z22 RS package; see . Many COPO's were X44 cars, but none had A/C.
3741  Camaro Research Group Discussion / General Discussion / Re: Engine Block P/N - A Question for JohnZ on: July 08, 2006, 10:14:46 AM
Precisely the same situation existed for 350 and 400 blocks - they were also machined for both 2- and 4-bolt mains depending on application, with no external identification either way. The mains were machined with the caps in place, and a visual check of the three center main caps was the only way to differentiate the 2-bolts from the 4-bolts.
3742  Camaro Research Group Discussion / Originality / Re: X77 dash wood grain on: July 07, 2006, 09:38:35 AM
Thanks! One more question. Would the black Z23 option show on the Cowl Tag as 711 or 712?

The Z23 option was unrelated to colors, and wasn't shown on the '69 trim tags; all that showed on the trim tag was the interior trim combination number (color and level - standard or deluxe).
3743  Camaro Research Group Discussion / Decoding/Numbers / Re: Interesting date on the Trim Tag on: July 07, 2006, 09:33:49 AM
Ed - Can't explain the date code, but as a matter of interest, we built all the '69 Corvairs off the main line, in a Pilot Area in the back corner of the plant, by hand. When the volume dropped below 5 per hour in late '68 (thanks to our buddy, Ralph Nader), we knew the car was dying, and moved the Chevrolet final assembly operations off-line at three per hour until the car was finally cancelled.
3744  Camaro Research Group Discussion / Decoding/Numbers / Re: Question on Block codes...??? on: July 07, 2006, 09:27:34 AM
The VIN stamp says it came out of a '68 Chevelle built at Framingham, Massachusetts.
3745  Camaro Research Group Discussion / Originality / Re: X77 dash wood grain on: July 06, 2006, 10:43:44 AM
See the chart for Z23 at ; Z23 all by itself (without the D55 console) got the assist grip, bright pedal trim, and wood-grain accents on the steering wheel shroud and on both sides of the lower portion of the instrument cluster.
3746  Camaro Research Group Discussion / Maintenance / Re: Can Anyone Recommend a Transmssion Shop in Baltimore Area? on: July 05, 2006, 10:33:25 AM
Try Jerry MacNeish in Eldersburg - www.z28camaro.comSmiley
3747  Camaro Research Group Discussion / Maintenance / Re: exhaust manifold torque on: July 05, 2006, 10:30:53 AM
Also, the gasket must be taken into consideration as well.  Using a high strength bolt and torquing to a higher value could impact gasket integrity.  Obviously the original specs are for original gasket, bolts, etc and might be different for performance upgrade components.

Quite true for most applications, but no gaskets were ever used on any Chevy V-8 exhaust manifold-to-head attachment.
3748  Camaro Research Group Discussion / Originality / Re: Camaro booster numbers on: July 04, 2006, 10:18:35 AM
I don't have the detail booster part numbers - maybe William or Ed have them. They're shown as different numbers in the A.I.M. between J50 (power drum) and J52 (power disc/drum), but that's because those numbers are for the complete assembly (booster and master cylinder), probably as a result of the drum master cylinder and the disc/drum master cylinder being different.

The A.I.M. also doesn't show the correct releasing of the parts - the booster and master cylinder were received separately at the plant (not as an assembly as shown in the A.I.M.); the booster was installed on the body on the Trim Line, and the master cylinder was installed on the Chassis Line where the brakes were bled. The master cylinder was pushed forward out of the way, and was attached to the front of the booster (or to the pedal support studs with manual brakes) with two nuts after Body Drop.
3749  Camaro Research Group Discussion / Originality / Re: 67 SSRS 350 shocks? on: July 02, 2006, 03:45:18 PM
I don't know - have no idea what level of internal jounce and rebound valving they have (how they're calibrated); you might call D&R and ask them - I think they're the licensee that's having them made.
3750  Camaro Research Group Discussion / General Discussion / Re: 1st Gen Driveshaft Design - Did GM Make a Mistake? on: July 02, 2006, 03:38:02 PM
I have no idea why they were offset. I seriously doubt if it was a "mistake" - Chevrolet didn't create, release, manufacture, and inventory unique configurations unless they needed them; most likely some development engineer found a driveline harmonic condition he didn't like and found that offsetting the joints with that combination took care of it. The driveshaft U-joints on my original '69Z are also offset 15*-20*.
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