Broadcast sheet question

[CDNL-78]

I'm sure somebody from this website must have a broadcast sheet for a 350 hp L34 just kicking around somewhere. It would be nice to see one. Have you seen one Greg that you can post for us?? If not, I'm sure Wilma must know of one out there. I'm all ears still, keep educating us all. Thanks again

[deuce-less]

[JRSully]

The L78 designation vs L34 on the Fischer sheet may have something do with, among other things, fuel lines/fuel system. They obviously had to install just one line on the L78 and 2 on the L34 (vapor return line), as these were partially installed directly to the body itself. I see all other BB body components being generic and not L78 or L34 specific.

[Nova Research Project]

Hello, Sorry been working on one of the Novas and not checking here.

I am not sure there was much to do with the engine on the Fisher side. (Especially on the Sheet that was mainly used just to tell the guys in the soft trim shop what seat to build) The Assembly Manual (which was definitely NOT the gospel) shows the fuel lines and heater box as GMAD installs. However as mentioned above may have been the only reason they were there.

However here is why I do not think they matter: In 1970 they dropped the engine RPO altogether.

I have seen L48, L65, L34 and L78. So in 1969 I would expect to see L89 (if there was one) but not 230, 350, 307. The standard engine like the 307 did not even have an RPO. It was the standard, so why call it out?

The trim level could be different even on SS cars. So They probably called it out anyway. Maybe as a reminder to put in a black steering wheel.

The Fisher records were trashed when absorbed into GMAD. Remember this was a hate - hate relationship. Supposedly some of the design documents are on file with the lawyers in case they were sued. Also much of the hard facts were on computer tape. The records were then compressed, printed, the micro filmed - Like the GM of Canada source microfiche that condenses a whole car down to two lines of RPO codes and a few other numbers of computer type.

That is also why you can not get an exact listing of how many Red L78s with White interior with the special fluid monitor were built. GM summarized production by RPO, printed it out and reused the tapes. There was no hard drive storage as we know it today. no databases, and no thought to go back to see what a car had. It was sold and gone. Any needed information was on the POP or on the car in code. I'd almost kill to have the complete order of run tapes for Willow Run for 68-70. There wouldn't be a thing you could not know about a car with the information those tapes contained. However they were probably reused within the week.

That is why my pet project is to catalog as much as I can to statistically show the Normative Practice. A great term stolen for the CRG by the way. Who is doing the the same for the first gen Camaro. The only difference is guys seem to be throwing data at them.

Greg

[Nova Research Project]

More Nova CSI:

Remember I am still learning from the pros and the cars themselves. Here are some areas that offer clues.

Windows stickers are a whole different ball game. The codes changed more than quarterly and with every price change. And they were not any more accurate sometimes. M40 in the Assembly Manual was the TH400. Yet on the window sticker it it just signified Turbo-Hydramatic. A 6 cylinder with M40 really had a TH350 (RPO M38). I am collecting these.

Anyone have a collection of GM Zone letters? They and the dealer option and price books? (not pocket price guides) Would tell what was available and what was not. They also told if you could get a particular option combo or not. These changed quite often as things were available or not. Like the SS wheels, they were not available for a time and then later were. I am looking for digital copies of these.

Lastly the GM service bulletins and service news also told how to fix things as well as what changes were made and sometimes with what VIN the change took effect. I have these and have plans to extract the Nova related info.

You can email any information to me. As well as pictures of labels, decals, wiring harness tape, tags and marks on the body. If you send a label I do not already have I will make you one for free. The email is listed on the site linked below. I will never share specific information about one car or the owner. Just the results as there is enough to have a firm consensus.

Greg

[WILMASBOYL78]

What about the case of the console with gauges...the console option was listed on the Fisher Body sheet...but probably not the gauges. Since there were 3 different tachs used...how was this identified..?? I agree with Sully about the fuel lines, except in 1970 the engine codes were not used but the cars still had the smae fuel lines.

Looks like more work for Mr. Roberts..

wilma

[Mark_C]

Console was listed on the fisher sheet because they had to punch the hole in the floor for the rivnuts to hold the brace. Gm installed the actual console, guages and tachs, and all that info was called out on the GM Body broadcast sheet. Different tachs (and instrument clusters) had different letters in the associated broadcast sheet box that would have identified the tachs redline, range, etc. Those tags are ussually on the back of the cluster so all the line worker had to do was match up the letters called out on the sheet with the tag on the back of the cluster.

[YENKO DEUCE REGISTRY]

I don't believe Nova's have rivnuts for their consoles.

[mbxlesney]

lowmile ..as a matter of fact I have seen this car......The guy works at Harley Davidson of Ocala. I went there to get a battery about 1 month ago and I seen this car. It about floored me how clean it was. Small world!!!

[mbxlesney]

Thanks for posting the Fisher sheet. Thats the first L34 I have ever seen.