Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - william

Pages: 1 [2] 3 4 ... 125
1969 - Orphans / Re: 19N509257 DZ 302 Block on ebay
« on: February 21, 2018, 08:15:39 PM »
Yup, all ZL1s were built at Norwood. No idea why some were VIN stamped on the pad.

The date on the body tag is roughly when Fisher Production Control released the build order. Usually, but not always, the order started in production shortly afterwards. Fisher routinely skipped weeks; all June '69 builds are 06A, all July cars are 07A. Your car N569745 has an 12D tag date; the ZL1s built earlier the same day have 12E tag dates. ZL1s #3-#39 have 02D tag dates; none of them were built in February. All were final-assembled March 3-12.

Regarding the engine date: years ago we did a '67 Z/28 restoration. 06E tag date; no-doubt-about-it original engine was V0706MO. Definitely possible.

There is NO direct relationship between VIN and body number.

The body number was the confirmation number Central Office assigned to a dealer order upon acceptance. It had nothing to do with production scheduling. Chevrolet scheduled production based on a number of factors: equipment availability, dealer location, paint color. How much clout the dealer had also came into play. In your case it is likely N547247 was ordered by a larger volume dealer.

One of the cars, N569475, is an excellent example because it was likely final-assembled December 30, 1968. The first two ZL1 Camaros N569358 & N569359 were final-assembled a few hours prior. Their body numbers are NOR 222002 & NOR 222003. NOR 222001, technically the first ZL1 Fred Gibb ordered, became ZL1 #14 N609238 built on or about March 5, 1969. The first ZL1 Camaro dealer order was NOR 211785. That order became ZL1 #3 N608193 built on or about March 4, 1969.

ZL1s #1 & #2 were moved up the schedule at the request of Chevrolets' General Manager. His name was on their Broadcast Copies.

Another factor was dealers ordering far more Camaros than the plants could build. The highest confirmation numbers seen as of July '69 are 377xxx. That's about 277,000 dealer orders but only 200,000 Camaros had been built. Many orders were cancelled by Chevrolet.

There is nothing unusual about cars built within minutes of each other having body numbers thousands apart.

General Discussion / Re: Car Life July 68 Z28 Road Test
« on: February 21, 2018, 01:04:57 AM »
Another '68 Z/28-RS feature in the September '68 Motorcade. Different car; has white stripes. U46 on this one also.

General Discussion / Re: 68 L48 Harmonic Balancer
« on: February 20, 2018, 11:34:17 PM »
If you can find it the November 1972 Car Craft had a great article about what to look for. Here's a pic from the article.

General Discussion / Re: 68 L48 Harmonic Balancer
« on: February 20, 2018, 10:45:36 PM »
Whatever you do, don't use a '69-up balancer. For '69, Chevy moved the timing mark.

1969 - Orphans / Re: 19N509257 DZ 302 Block on ebay
« on: February 20, 2018, 04:42:36 PM »
You would think they would have had a process for stamping it on the side vs. the top. I am still surprised that there is such a large window of inconstancy with Vin location. What is the earliest vin stamped by the oil filter? what is the latest known vin stamped on the pad? (LA and Norwood examples if you have them)

Some late-March built ZL1s are VIN stamped on the pad.

1969 - Orphans / Re: 19N509257 DZ 302 Block on ebay
« on: February 19, 2018, 03:29:09 PM »
I'm surprised not to see a VIN from either plant on the pad. They were somewhat inconsistent; years ago I had a late October '68 302 stamped by the oil filter.

1969 - Orphans / Re: 19N509257 DZ 302 Block on ebay
« on: February 19, 2018, 02:37:09 AM »

There were two US 1st Gen Camaro assembly plants: Norwood, Ohio and Van Nuys, CA. The Norwood plant initially only built Camaros; Firebird moved there April of '69. For 1969 Norwood produced about 87% of total Camaro production. The Van Nuys plant built several other cars in addition to Camaro.

At both plants, Camaro VIN sequencing started at 500001. Norwood Camaros had an N VIN prefix, Van Nuys Camaros had an L VIN prefix. From many decades of data gathering, reverse-engineered production calendars have been compiled. From these it is possible to estimate a production date given a VIN. Cars were not built in exact VIN order.

V1107DZ is a 302 engine final-assembled at the Flint, MI plant on November 7, 1968.

Camaro N509257 was final-assembled at Norwood on or about September 24, 1968. It could not possibly have had an engine built November 7, 1968.

Camaro L509257 was final-assembled at Van Nuys on or about November 19, 1968. It could have had an engine built November 7, 1968.

1969 - Orphans / Re: 19N509257 DZ 302 Block on ebay
« on: February 18, 2018, 07:56:27 PM »
Looks real, but unless they found a way to time travel, wasn't originally installed in N509257. Probably meant L509257.

Decoding/Numbers / Re: This stamp look original?
« on: February 16, 2018, 01:49:24 AM »
It is a match with the other May 26 stamps I have.

General Discussion / Re: X Codes
« on: February 14, 2018, 12:09:23 AM »
The body tag was of no use to Chevrolet Assembly; they did not reference it. Body and Chassis Broadcast Copies were generated by Chevrolet when the completed body was released to final assembly. X codes were not relevant to Chevrolet; never seen them on any paperwork. 

X codes refer to specific body build configurations. It is likely that both Fisher Body plants used the same engineering information to build Camaro bodies. For some reason, Fisher made the decision to add the info to Camaro body tags late Dec 1968 but only at Norwood.

There had to be other means of conveying Fisher Body build information at both plants. Certain options required slight differences in body fab; RS, dual exhaust, spoilers, etc. Carefully media blasting a body often reveals option codes written on the firewall in grease pencil: M20, N10, Z22, etc. Maybe that's all they did.

BTW the firewall graffiti prominently seen on some restorations is inaccurate. The writing was done on the uncoated body and all of it was covered during firewall blackout. Over time, the paint can flake off the crayon and some of it becomes visible. On occasion, I have seen the assembly sequence number written on a body after paint. Workers were supposed to remove it.   

General Discussion / Re: X Codes
« on: February 13, 2018, 09:36:44 PM »
Fisher did not always put partial X codes there. I have seen interior paint codes such as DK GRN or BLU in the same area.

General Discussion / Re: 68 Rear Disc Brake Package
« on: February 07, 2018, 03:48:10 PM »
No I was referring to the May 1968 Hot Rod feature: "Just For Fun: 68 1/2 Chevys" featuring a cross-ram/4 wheel disc '68 Z/28. Then, there is the July 1968 Car and Driver feature "Z/28 Camaro vs. Tunnel Port Mustang. The Z/28 had a cross-ram with the plenum breather and 4 wheel discs. None of this was RPO; retrofitted to production cars.

Point is, 4-wheel discs were fairly well publicized at the time.

General Discussion / Re: 68 Rear Disc Brake Package
« on: February 07, 2018, 02:30:33 PM »
Little known?

The cross-ram & 4 wheel disc brake retrofit kits received coverage in many of the magazines back in the day. You could buy the entire rear axle but the kit included parts to adapt Corvette discs brakes to the production rear axle. Did not include a parking brake and wasn't street-legal.

Pages: 1 [2] 3 4 ... 125