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109375 Posts in 12661 Topics by 4866 Members
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3781  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.
3782  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).
3783  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.
3784  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.
3785  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.
3786  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
3787  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.
3788  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.
3789  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.
3790  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*.
3791  Camaro Research Group Discussion / Originality / Re: 67 Optikleen vs Kleerview washer bottles on: July 01, 2006, 06:38:36 PM
None. It wasn't a factory option - it was a dealer add-on accessory item.
3792  Camaro Research Group Discussion / Originality / Re: 67 SSRS 350 shocks? on: July 01, 2006, 06:35:43 PM
It came originally with spiral Delco shocks - the repro spiral shocks are allegedly a pretty close match to the originals, but have no stamped-in part numbers or dates like the originals did.
3793  Camaro Research Group Discussion / Originality / Re: starter soleniod wire protector ???? on: June 28, 2006, 10:28:29 AM
What year? The '69 assembly manual doesn't show anything like that. To post a picture, click on "Additional Options" just below the window where you compose your post, browse your hard drive to find the image, highlight it and click "open", then click on "upload", then close that window, and when you click on "post", the photo will show up below the text in your post.
3794  Camaro Research Group Discussion / General Discussion / Re: 140 cam, manifolds, and cross ram???? on: June 27, 2006, 11:12:50 AM
JohnZ: What would be the GM part number for the LT-1 cam? is it 3896962? or the 24502476?

The LT-1 cam is available from GM as P/N 12364054 (cam and lifter kit, manufactured by Crane), or from Federal-Mogul/Speed-Pro as their #KC-1145R (cam and lifter kit) or as #CS-1145R (cam only), or the cam only from Crane as their #969551.
3795  Camaro Research Group Discussion / General Discussion / Re: '70 Camaro question for JohnZ on: June 27, 2006, 11:08:47 AM
seems genuine to me. states Dealer Introduction: 2/26/70

That dealer introduction date is the same as the 02D production week, and they were in production for at least six weeks, probably eight, prior to the dealer introduction date.
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