The "L" is just GM'* naming of our engine'*.
L27 = 92-94 Naturally Aspirated Engines
L36 = 95-present Naturally Aspirated Engines
L67 = any supercharged 3800 including Series I and Series II
(Series II supercharged engines started in 96).
Yup, thats about right.
L27: 92-94 N/A 3800'* (Series I) (Vin L)
L36: 95-03 N/A 3800'* (Series II) (Vin K)
L67: 92-03 Supercharged 3800'* (Series I & II) (Vin 1)
L26: 04 N/A 3800'* (Series III) (Vin ??)
L32: 04 Supercharged 3800'* (Series III) (Vin ??)
Every engine made by GM has a designation like that. For instance, the 3.4 DOHC Engine is an LQ1 (Vin X), the Gen. II 3.1 is an LHO (Vin T), the Gen III 3100 is an L82 (Vin M), the Gen. II Turbo 3.1 is an LG5 (Vin V), and so on and so fourth.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!