[driller]

Another Atlanta car with an EX code motor. T0521EX. 06B car. 406 casting with A 16 7 date. Then the 1967 dated L89 heads.



http://cgi.ebay.com/ebaymotors/1967...cks?hash=item1c0cfd0205&_trksid=p4506.c0.m245

 

[fast67vellen2o]

Gotta love the Impala radio that is in it.

 

[Dave Birdwell]

:noway:

 

[Dave Birdwell]

Here's a good question....the Camaro had a 4K code on the firewall tag for the 375 horse engine.... did the Chevelle use the same code???

 

[66 MYSTERY CHEVELLE]

:noway:

See that David.. No Charge

 

[Dave Birdwell]

:noway:

See that David.. No Charge

Thanks, Mike... :yes:

 

[driller]

:noway:

See that David.. No Charge

I thank you also mike. How about starting over from scratch?

curt

 

[66 MYSTERY CHEVELLE]

Life is short.. .. Curt.. and I'm always open to discuss fresh starts. I'll have my people call your people....

Oh wait.. I got No People.. I'll ring ya later in the week.

 

[AZCamino]

I would expect an EX code engine (smog pump) to be in a Fremont built car. Why is it in an Atlanta car with aluminum heads? And 4 months from casting date to assembly date.

 

[66 MYSTERY CHEVELLE]

Bruce

I have spoken with Rick via phone and email several times about his car and he just doesn't get it... :noway: matter of fact he says he can't find anything that documents a 67 SS ever got coded EG.. just 66's and he thinks EX was the only 67 suffix code for L-78 Chevelle.. so he can't understand why his Atlanta built car would not have an EX coded engine.. I think he gets that the heads are not Factory... I think... of course no docs. on car.

I personally documented a Fremont 67 SS L-78 EX coded a few years back.

Now if someone else can show me the light as to how an Atlanta Built Car got an EX coded block originally installed in it.. have at it. I am open.

I could buy the opposite.. a Fremont Built car with an EG coded block, but notan ATL built car with EX coded block.

I mean, if a Fremont car was being built for a customer outside of Calif. maybe that car would not require smog and somehow got an EG block.. just reaching here.. but I just can't figure how the current situation can happen.

Nice Radiator in that one too~

 

[AZCamino]

I'm surprised that the owner of a car like this wouldn't be aware that Tonowanda records show that only about 10% of the 375HP Chevelle engines produced in 1967 had the EX code and the other 90% were EG coded. The exact quantities of these engines was documented about 25 years ago by Fran Preve, an employee and Tonowanda historian.

http://www.chevelles.com/forums/showthread.php?t=253540&highlight=Fran+Preve

 

[66 MYSTERY CHEVELLE]

I hear ya Bruce: If I am incorrect with what I am saying, I am open to listening to others with more knowledge and experience.

The 1967 Chevelle model year according to GM, Tonawanda records, and the personal and exhaustive research of many Chevelle Enthusiasts like myself shows that 630 RPO L-78 engines were produced. 596 were coded with the more common EG code, designating it as a 375hp engine. 34 of these L-78’s were coded EX and were destined for California, a state that mandated that all vehicles, with few exceptions if any, have SMOG EQUIPMENT or Air Injection Reactor (RPO K-19) installed to help control the pollution of the air. These engines were built/assembled at the Tonawanda Engine Assembly Plant in Tonawanda, NY. The engines got stamped with the date of the engine assembly and a 2 letter suffix code designating the horsepower rating, Trans. type and whether it was an AIR car (SMOG) or not, while at the Tonawanda plant. In the case of the engine in question here, EX stands for an L-78 Smog equipped engine. The other 18 engines produced were listed as SERVICE REPLACEMENT Engines, it is unknown how many of those engines ever got installed or how they were Stamped. The Engine received it’s sequential production number or partial VIN Stamp when it arrived at whatever assembly plant the car was being built at. This VIN stamp was just forward of the Tonawanda assembly plant date stamping.

It looks like a nice enough car but the money is in the originality of the drivetrain.. otherwise, just another 67 SS IMO

 

[jeffschevelle]

Here's a good question....the Camaro had a 4K code on the firewall tag for the 375 horse engine.... did the Chevelle use the same code???

There is no cowl tag code for the horsepower on a 66 or 67 Chevelle. The 65 Z16's had M in group 4, but that really pertained to the body modifications required to build a Z16 (rear trim, no quarter emblems, etc.) and not to the engine (although all Z16 bodies received the L37 396/375 engine).

If I understand it correctly, the reason the 67 Camaros got cowl tag codes for certain engines was also related primarily to body modifications specific to those engines - such as the flipped over heater core and different heater box for a big block, the addition of the bracketry for the rear end radius rod, etc.

Since all 66-67 138vin Chevelles were 396's, and since the HP (325, 360/350, or 375) did not affect the body of the car in any way, there was no cowl tag designation for the engine HP in a 66-67 SS Chevelle.

 

[driller]

Well, if 34 of the 375hp motors are stamped EX, here is another supposedly EX stamped car with an Atlanta tag. That makes two fake Atlanta 375hp cars that I've seen in the last couple of weeks and approximately 6.8% of the EX motors accounted forl. However, I'm pretty sure that the car in Arizona is a good restamp. T0503EX with the partial vin of the car.


http://www.steeldreamz.com/1967_chevelle_ss.htm

 

[Choo Choo SS]

i'm with Mike on this one California emissions coded cars were for point of sale and delivery to Ca. only. I could be remotely possible to see one from kansas city being it was the next closest plant to Fremont but it would have to be shipped to Ca. for sale and reg.Point in being I ordered a 70's pontiac for a friend in Illinois with 350 4bl which was Ca. emissions only for sale in Ca only. GM overode the order and thye car came in with 350 2bl Fed emissions.

 

[DaleM]

Just tossing this out but Tailfins & Bowties shows GM reporting 42,147 K19 A.I.R. options sold. I don't think the mandated K19 cars, such as those from California, were shown as optional sales just like the base SS396 325hp engine isn't listed as an optional sales item (although the L35 was available in non-SS El Caminos and that accounts for the 2,565 listed).

Question being if an L78 was ordered from Atlanta along with the K19 option, would it be coded as EX as opposed to EG?

 

[driller]

Dale, we moved out to Indy from California a couple of years ago. California emissions has always been an option on all cars for as long as I can remember. I don't believe it was ever standard equipment even when ordered from a California dealer. Just a few years back I ordered a new Ford truck and they had to specify Cal emissions vs. 49 state emissions on the order form. I'm pretty sure its always been an option with a specific option code and not standard equipment. You can go right now onto Kelly blue book and make a car with whatever options are available for that make and model. One of the options is CAl emissions. Cal dealers are obviously required to select that option when they place their orders.

No one here can be 100% certain that Kan or Atl didn't or couldn't produce cars for California that needed smog equipment. Yes it makes a little more sense for delivery that Cal ordered cars would come out of Fremont, but is this just an assumption based on todays common sense or fact? If this would be the case for smog equiped cars, then why not all cars destined for Cal be produced in Fremont? If you can document any non smog cars coming out of Atl to Cal dealers, then you can certainly expect them to be prepared to supply smog equiped vehicles also. Like the others here, I would have to agree that it is possible but not too probable. I'm also assuming that in the case of EX stamped motors, they all were ordered for Cal dealers. So, if the motor is original to the car, then the car is a Cal car also.

 

[66SSFan]

It's been on the local Craigslist for a while too, nice looking car for sure and really cool with the l89 heads even if they are not correct for the car. Too bad it's advertised and priced as original though.
http://seattle.craigslist.org/see/cto/1410370811.html


http://www.chevelles.com/forums/showthread.php?t=291390&highlight=l89

 

[AZCamino]

Just tossing this out but Tailfins & Bowties shows GM reporting 42,147 K19 A.I.R. options sold. I don't think the mandated K19 cars, such as those from California, were shown as optional sales just like the base SS396 325hp engine isn't listed as an optional sales item (although the L35 was available in non-SS El Caminos and that accounts for the 2,565 listed).

Question being if an L78 was ordered from Atlanta along with the K19 option, would it be coded as EX as opposed to EG?

The options ordering information I have dated February 1, 1966 has this note for the K19 option.

"Approved by the state of California and exclusive to California vehicle registrations only."

I think exclusive is the key word. Ok, this is in 66 but I would assume this to be the case in 67 also. Maybe someone with 67 information can chime in. We also know that Fremont built vehicles with K19 were also delivered to surrounding states (particularly in Oregon) and sold outside of California, but the intent was apparently to have these vehicles available where Californians might purchase their cars. In 1966, K19 sales numbers can account for most of Fremont's production. In 1967, as I recall, Fremont produced a larger number of cars than the K19 numbers, so that implies that Fremont also built a significant number of 49 state cars in addition to the K19 cars. I think all the K19s sold would show up as optional sales. I would agree that Fremont could have built EG engined cars for delivery outside of California, but I don't think that any EX coded engines would have been installed outside of Fremont.

 

[DaleM]

The options ordering information I have dated February 1, 1966 has this note for the K19 option.

"Approved by the state of California and exclusive to California vehicle registrations only."

I think exclusive is the key word. Ok, this is in 66 but I would assume this to be the case in 67 also. Maybe someone with 67 information can chime in. We also know that Fremont built vehicles with K19 were also delivered to surrounding states (particularly in Oregon) and sold outside of California, but the intent was apparently to have these vehicles available where Californians might purchase their cars. In 1966, K19 sales numbers can account for most of Fremont's production. In 1967, as I recall, Fremont produced a larger number of cars than the K19 numbers, so that implies that Fremont also built a significant number of 49 state cars in addition to the K19 cars. I think all the K19s sold would show up as optional sales. I would agree that Fremont could have built EG engined cars for delivery outside of California, but I don't think that any EX coded engines would have been installed outside of Fremont.

My 67 data shows about the same thing but the figures don't add up. Let me say first the option numbers reported in Tailfins & Bowties do NOT inlcude options that were included within other options such as:
L35 engines shown sold from 1966 thru 1968 that were base engines in the SS396 just like the LS5 engine is not shown with any option sales in 1970 because it was the base engine in the Z15 SS454 option. Based on that, I don't believe the figures for standard or required items are included in

"GM Air Injection Reactor: Approved by the state of California and exclusive to California registration. Available only when closed engine positive ventilation is ordered." To me this means the K24 option is required along side the K19 option.

The 67 figures for K19 (A.I.R.) is 42,147, the figures for K24 (closed pos vent) is only 40,515 and the production reported for Fremont is 61,500. The "...exclusive to California registration..." and sales numbers would indicate 19,353 Chevelles built at Fremont were apparently for dealers outside of California; that's reasonable. If K19 (A.I.R.) was only available when K24 (closed pos vent) was ordered, why would the figures for K24 be 1,632 less than K19? Odd...

Further, K24 says...
"Ventilation, Closed Engine Positive: Included when 325-hp 327-cu-in or 350-hp engine is ordered." Note nothing is said about K19 or California.

So, would the K24 sales figure of 40,515 include those two engine orders (4,048 L79 plus 17,176 L34 where it's included) as well? Now we've gone from 1,632 fewer K24 than K19 (that required it) to 22,856 K24 sold without K19. The AIM shows K24 on 6-cyl engines as well as the 283, the L30 327 as well as the L35 396 (noteably lacking the L35 & L79 that automatically came with K24).

Devil's advocate here...
The reported options sales figures are why I tend to think the K19 "...required for California registration..." (not California production) units are not included in the 42,147 reported sold as options. Additionally, since K19 required K24 and K24 figure is lower than the K19 by 1,632 those wouldn't be included, either in the California registration requirement nor any K19 options sold outside of California. Other production plants that could have installed K19 (and required K24) for other areas of the country and K24 sales reported would be for every engine where it wasn't required (K19/K24) or standard (L34/L79).

Great discussion...