why does GM use the same engine name
Thread Starter
Melting Slicks
Joined: Feb 2015
Posts: 2,069
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From: Park Ridge New Jersey
why does GM use the same engine name
I was watching Fantom works this morning and the installed a LT4 in a '67 vette, not the same as a C4 LT4. I've seen older GM (vettes??) from the '70s that had an LT1 in it.
Why would GM use the same names? Why not an LX4 or LT2?
Why would GM use the same names? Why not an LX4 or LT2?
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
Sales through nostalgia Im betting.
Seen the new Chevy blazer? Now that aint gonna fly
ZR1 ZL1 has spanned a few gens dating back to the C3
Seen the new Chevy blazer? Now that aint gonna fly
ZR1 ZL1 has spanned a few gens dating back to the C3
Last edited by cv67; Aug 1, 2020 at 04:13 PM.
- 1986 Original Owner -
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Weren’t the C3s LT-1 and LT-4 (note the hyphen)? Ever notice the C2 StingRay and the C3 from ‘69 Stingray? I suspect the Airdale is right, “Sales through nostalgia”.
Drifting
Joined: Jun 2018
Posts: 1,678
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From: Michigan
They have re-used a lot because they have used a lot.
The first letter of the series usually denotes the same thing on all models.... G for gearing, L for Engines, Z for suspension. I can't think of exceptions off the top of my head, but I can't say for sure there aren't any so I am goign to say usually.
So using an L for an engine code
Then the next is commonly used for the Family of engines (LS/LT) but I know the L98/LB9 step away from this. So... If always using L and then you had 0-9+A-Z for the second position and a 0-9+A-Z in the second, giving 1260 total possibilities. Eventually they would run out, so why not use the cool sounding ones a few times?
The first letter of the series usually denotes the same thing on all models.... G for gearing, L for Engines, Z for suspension. I can't think of exceptions off the top of my head, but I can't say for sure there aren't any so I am goign to say usually.
So using an L for an engine code
Then the next is commonly used for the Family of engines (LS/LT) but I know the L98/LB9 step away from this. So... If always using L and then you had 0-9+A-Z for the second position and a 0-9+A-Z in the second, giving 1260 total possibilities. Eventually they would run out, so why not use the cool sounding ones a few times?
Drifting
Joined: Jun 2018
Posts: 1,678
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From: Michigan
Z is predominantly performance, trim, convenience and appearance packages. Think ZR1 ( on 4 different generations, C3, C4, C6, C7 ), Z28, Z01 (35th), Z25 (40th), Z06, etc.
Suspension is F. F41, FG4 (Bilstein shocks), FX3. F also includes a lot of wheelbase, axle capacity, and front axle ratio selections. After looking at the listings, it seems to me that "F" is more "frame related", which includes "suspension".
Suspension is F. F41, FG4 (Bilstein shocks), FX3. F also includes a lot of wheelbase, axle capacity, and front axle ratio selections. After looking at the listings, it seems to me that "F" is more "frame related", which includes "suspension".
Last edited by KyleF; Aug 1, 2020 at 03:18 PM.
Le Mans Master
Joined: Aug 2017
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From: New Jersey
Z is predominantly performance, trim, convenience and appearance packages. Think ZR1 ( on 4 different generations, C3, C4, C6, C7 ), Z28, Z01 (35th), Z25 (40th), Z4Z (95 Pace Car), Z06 (on is it now 5 generations?), etc. There are also a bunch of spare tire selections in the Zs. (I wonder if "Z" originally denoted "Zora-Projects"? The 63 Z06 was available in the first year that the GM letter system for options went into use. The Z11 Impala was close behind. And the Z category became the performance stuff? Crazy WAG, but........)
Suspension is F. F41, FG4 (Bilstein shocks), FX3. F also includes a lot of wheelbase, axle capacity, and front axle ratio selections. After looking at the listings, it seems to me that "F" is more "frame related", which includes "suspension".
Suspension is F. F41, FG4 (Bilstein shocks), FX3. F also includes a lot of wheelbase, axle capacity, and front axle ratio selections. After looking at the listings, it seems to me that "F" is more "frame related", which includes "suspension".
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