Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
|
#1
01-16-2016, 04:50 PM
|
||||
|
||||
GM Engine ID...
What does the "L" in L78 stand for??? I notice all GM engines seem to have an "L"....and is there any method to the numerals like "78" or is it just by chance??
wilma [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]
__________________
02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro 
|
|
#2
01-17-2016, 02:14 PM
|
|||
|
|||
|
Re: GM Engine ID...
Tom, GM seems to use an alpha prefix for their RPO options then and still to this day. "A" are usually power options, seat, window, seats, etc. "B" are molding options, "C" heating and cooling, "D" stripe and decal packages. Of course "M" are transmission options and "L" engine options. I could go on and on but I think you get the idea.
I've worked in the parts department at a GM dealer for 29 years. GM used to send out little booklets every couple of years that listed what all the RPO codes were. That was before computers became common. Now we just type in the Vin # and it brings up all the options the vehicle was built with. I hope this helped....Troy
__________________
70 Chevelle Vert L34 M21 28-A 791 70 Chevelle Cpe LS6 M40 14-14 756 70 Chevelle Cpe L?? M?? 926-99616 755 69 Chevelle Cpe L78 M21 71-B 756 70 Chevelle Cpe L34 M20 48-48 796
|
|
#3
01-22-2016, 08:46 PM
|
|||
|
|||
|
Re: GM Engine ID...
I once heard the L originated for Locomotion. There was some historical info to back that up, but it was many years ago. I don't recall the origins of the M, but it was in that same article.
__________________
Kurt S - CRG
|
 |
|
|
Linear Mode
