1969 Engine Code

[Jimmy G.]

Anyone ever heard of a 1969 350 - 350 A/C engine code in a Corvette of GD or GC? More later after I get some responses. Thanks

[Dick W.]

Re: 1969 Engine Code

I have seen an original GD. Belonged to a deceased friend in Shelby NC Silver car I believe

[Dick W.]

Re: 1969 Engine Code

I have seen an original GD. Belonged to a deceased friend in Shelby NC Silver car I believe

[Tom S.]

Re: 1969 Engine Code

Jim
It shpuld be a 350/350 h.p. manual trans. and ac with electronic ignition.That is supposed to be a G D code engine.

Tom

[Tom S.]

Re: 1969 Engine Code

Jim
It shpuld be a 350/350 h.p. manual trans. and ac with electronic ignition.That is supposed to be a G D code engine.

Tom

[Dick W.]

Re: 1969 Engine Code

P.S. Been judging the cars for 20 years and have never seen one on the judging field. The only one I have on my survey is in the 21,XXX VIN range.

[Dick W.]

Re: 1969 Engine Code

P.S. Been judging the cars for 20 years and have never seen one on the judging field. The only one I have on my survey is in the 21,XXX VIN range.

[Joe L.]

Re: 1969 Engine Code

Dick-----

The combination of options that this code represented (L-46 with C-60 and K-66) probably meant that not too many were made to begin with, so it's probably not surprising that you haven't run into many. During that period of time, folks that were "performance-oriented" and ordered K-66 probably wouldn't also have ordered C-60. Conversely, folks that wanted C-60 probably wouldn't have cared too much about K-66. I would expect that whatever of these that exist were ordered by dealership "ordering managers" for stock.

[Joe L.]

Re: 1969 Engine Code

Dick-----

The combination of options that this code represented (L-46 with C-60 and K-66) probably meant that not too many were made to begin with, so it's probably not surprising that you haven't run into many. During that period of time, folks that were "performance-oriented" and ordered K-66 probably wouldn't also have ordered C-60. Conversely, folks that wanted C-60 probably wouldn't have cared too much about K-66. I would expect that whatever of these that exist were ordered by dealership "ordering managers" for stock.

[Tom R.]

Re: 1969 Engine Code

Interesting mix of options...I'm listening for more!

[Tom R.]

Re: 1969 Engine Code

Interesting mix of options...I'm listening for more!

[Dick W.]

Re: 1969 Engine Code

Joe add 4 speed to the options you just mentioned. If the car that Jim is talking about is the one I have seen, it has not been out for many years. I do not think that it was ever judged at a NCRS event. I first saw it at a NCCC Concours in the late 80's or early 90's. At the time if my memory serves me correct the GC/GD codes were listed as a possible code. No one had seen one to verify that, in fact, they were actually installed. Chevrolet lists several codes that have not been verified as actually being installed in a vehicle.

[Dick W.]

Re: 1969 Engine Code

Joe add 4 speed to the options you just mentioned. If the car that Jim is talking about is the one I have seen, it has not been out for many years. I do not think that it was ever judged at a NCRS event. I first saw it at a NCCC Concours in the late 80's or early 90's. At the time if my memory serves me correct the GC/GD codes were listed as a possible code. No one had seen one to verify that, in fact, they were actually installed. Chevrolet lists several codes that have not been verified as actually being installed in a vehicle.

[Joe L.]

Re: 1969 Engine Code

Dick-----

The 4 speed comes "automatically" as L-46 was only available with 4 speed.

These GC/GD codes must have been very little-used. Some references don't even show them. However, I believe that Chevrolet records have verified that they were used. In general, a "G prefix" for the suffix code was unusual for the late 60s period. The GC code was used for some full size passeneger cars with 283 during 65-67.

I'll bet that there is an interesting story behind the use of these suffix codes. There must have been a reason why they were used. Normally, they weren't going to build "complexity" (i.e. more suffix codes than necessary)into the nomenclature system. Usually, when different codes were used it meant that they signified some difference in the engine assembly. I wonder what the difference was between engine assemblies with these "G-prefix" codes as compared to those with the more common "H-prefix" L-46 codes? I feel very confident that there was some difference.

[Joe L.]

Re: 1969 Engine Code

Dick-----

The 4 speed comes "automatically" as L-46 was only available with 4 speed.

These GC/GD codes must have been very little-used. Some references don't even show them. However, I believe that Chevrolet records have verified that they were used. In general, a "G prefix" for the suffix code was unusual for the late 60s period. The GC code was used for some full size passeneger cars with 283 during 65-67.

I'll bet that there is an interesting story behind the use of these suffix codes. There must have been a reason why they were used. Normally, they weren't going to build "complexity" (i.e. more suffix codes than necessary)into the nomenclature system. Usually, when different codes were used it meant that they signified some difference in the engine assembly. I wonder what the difference was between engine assemblies with these "G-prefix" codes as compared to those with the more common "H-prefix" L-46 codes? I feel very confident that there was some difference.