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GM LS Cam Specs

Gen 3 LS:

Year       Part #            Duration*   Valve Lift   LSA

Corvette LS1
97-98     12554710         199/207      .472/.479    117
98-99     12560964       199/207      .472/.479    117
2000       12560968       198/209      .500/.500   115.5
01-03       12561721          196/207       .467/.479    116

PART NUMBER 12561721
116 LDA 115 INTAKE CENTERLINE.       PRODUCTION 2001 6.0L TRUCK AND 5.7L LS1 CAR CAMSHAFT.
Lift:   @Cam @Valve (1.7 ROCKER RATIO)     EXHAUST: 0.281 0.475     INTAKE: 0.274 0.463
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 71 BBDC 33 ATDC 284       INTAKE: 11 BTDC 87 ABDC 278
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 39 BBDC 12 BTDC 207       INTAKE: 17 ATDC 33 ABDC 196

Corvette LS6
2001       12560950      204/211       .525/.525     116       385hp

PART NUMBERS 12560950,12593206   2001 LS6 AND LS2 CAM DATA
116 LDA AND 118 INTAKE TIMING.
Lift: @Cam @Valve (1.70 ROCKER RATIO)    EXHAUST: 0.308 0.524    INTAKE: 0.308 0.524
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 65 BBDC 30 ATDC 275    INTAKE: 9 BTDC 81 ABDC 270
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 37 BBDC 6 BTDC 211        INTAKE: 18 ATDC 42 ABDC 204

02-04     12565308      204/218      .555/.551      117.5    405hp

PART NUMBER 12565308 – 2002-04 LS6 CAM CARD DATA:
117.5 LDA, 120 INTAKE CENTERLINE.
1.70 ROCKER RATIO Lift: @Cam @Valve EXHAUST: 0.322 0.548 INTAKE: 0.324 0.551
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 69 BBDC 33 ATDC 282 INTAKE: 7 BTDC 80 ABDC 267
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 42 BBDC 4 BTDC 218 INTAKE: 19 ATDC 43 ABDC 204

Camaro/Firebird LS1
98           12557812         198/209     .500/.500     119.5
99-00    12560965       198/209     .500/.500     119.5

01-02      12561721          196/207      .467/.479      116

PART NUMBER 12561721
116 LDA 115 INTAKE CENTERLINE.   PRODUCTION 2001 6.0L TRUCK AND 5.7L LS1 CAR CAMSHAFT.
1.7 ROCKER RATIO Lift: @Cam @Valve   EXHAUST: 0.281 0.475   INTAKE: 0.274 0.463
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 71 BBDC 33 ATDC 284   INTAKE: 11 BTDC 87 ABDC 278
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 39 BBDC 12 BTDC 207    INTAKE: 17 ATDC 33 ABDC 196

 

Trucks and SUV with Vortec engine

Year       Part #            Duration*   Valve Lift   LSA

LR4 and LM7
99          12560966       191/190       .457/.466     115.5
00-04   12560967       191/190       .457/.466     114
the 03-04 LM7 used the 12560967 camshaft

LQ4
99-00     12560967     191/190         .457/.466     114
01-04       12561721        196/207       .467/.479     116
01-04 LQ4 cam is same as Camaro, Corvette LS1 and LQ9 cam

LQ9
02-03       12561721      196/207        .467/.470     116

GM Performance Parts
Hot Cam    12480033    219/228    .525/.525     112

LS SERIES HOT CAM 109 INTAKE CENTERLINE 112 LDA
1.71 INTAKE ROCKER RATIO Lift: @Cam @Valve   EXHAUST: 0.308 0.525   INTAKE : 0.308 0.525
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 75 BBDC 32 ATDC 287   INTAKE : 27 BTDC 71 ABDC 278
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 46 BBDC 0 ATDC 226    INTAKE : 1 ATDC 39 ABDC 218

ASA             12480110/88958770      226/236   .525/.525     110

Gen 4 LS:

Year       Part #            Duration*   Valve Lift   LSA

Corvette LS2
05-06        12574519      204/211       .520/.520     116  (also 06-07 CTS-V)
07                12593206                          .524/.524     116  (also 08-09 Trailblazer SS 6.0L)

PART NUMBERS 12593206 – LS2 CAM CARD DATA:
116 LDA, 118 INTAKE CENTERLINE.
1.70 ROCKER RATIO Lift: @Cam @Valve EXHAUST: 0.308 0.524 INTAKE: 0.308 0.524
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 65 BBDC 30 ATDC 275 INTAKE: 9 BTDC 81 ABDC 270
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 37 BBDC 6 BTDC 211 INTAKE: 18 ATDC 42 ABDC 204

Corvette LS3
08             12623063         204/211       .551/.522       ???
09-13       12631811               ???

Camaro LS3 (also 2009 G8)
10-15        12623063         204/211       .551/.522       ???

PART NUMBER 12603844 (replaced by 12623063) – LS3 CAM CARD DATA:
117 LDA, 120 INTAKE CENTERLINE
1.70 ROCKER RATIO Lift: @Cam @Valve Exhaust: 0.306 0.522 Intake: 0.324 0.551
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
Exhaust: 66 BBDC 29 ATDC 275 Intake: 7 BTDC 80 ABDC 267
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
Exhaust: 38 BBDC 7 BTDC 211 Intake: 19 ATDC 43 ABDC 204

Corvette ZR1 LS9
09-12       12638427      211/230       .558/.552     122.5

LS9 12605227 CAM CARD INFORMATION:
122 INTAKE CENTERLINE, 122.5 LOBE DISPLACEMENT ANGLE
1.70 ROCKER RATIO Valve Lift: @Cam @Valve EXHAUST: 0.328 0.558 = 14.2 mm  INTAKE: 0.331 0.562 = 14.3 mm
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 84 BBDC 31 ATDC 295   INTAKE: 8 BTDC 89 ABDC 277
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 56 BBDC 6 BTDC 230    INTAKE: 18 ATDC 49 ABDC 211

Corvette LS7
06-13        12638426     211/230       .558/.558      121 LSA  (also 14-15 Camaro Z/28 7.0L)
.                                                             (.591/.591 with factory LS7 1.8x rockers)

LS7:
120 INTAKE CENTERLINE, 120.5 LOBE DISPLACEMENT ANGLE
Lift: @Cam @Valve (1.8 ROCKER RATIO)   EXHAUST: 0.328 0.588   INTAKE: 0.331 0.593
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 80 BBDC 35 ATDC 295   INTAKE: 8 BTDC 89 ABDC 277
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 52 BBDC 2 BTDC 230    INTAKE: 18 ATDC 49 ABDC 211

LSA

LSA: 12605220 CAM CARD INFORMATION:
119 INTAKE CENTERLINE, 119 LOBE DISPLACEMENT ANGLE
1.70 ROCKER RATIO Lift: @Cam @Valve    EXHAUST: 0.283 0.480 = 12.2 mm    INTAKE: 0.283 0.480 = 12.2 mm
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 79 BBDC 34 ATDC 293    INTAKE: 5 BTDC 86 ABDC 271
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 46 BBDC 10 BTDC 216    INTAKE: 21 ATDC 39 ABDC 198

L92

PART NUMBER 12612273 2007 L92 6.2L CAM AT NOMINAL TIMING:
115.5 LDA 116 INTAKE CENTERLINE ‘NOMINAL’ (99 AT PHASER PARK)
1.70 ROCKER RATIO Lift: @Cam @Valve    EXHAUST: 0.294 0.500    INTAKE: 0.294 0.500
Cam Timing@0.004-inch Tappet Lift: Open Close Adv. Duration
EXHAUST: 69 BBDC 35 ATDC 284    INTAKE: 8 BTDC 90 ABDC 278
Cam Timing@0.050-inch Tappet Lift: Open Close Duration
EXHAUST: 38 BBDC 9 BTDC 209    INTAKE: 18 ATDC 36 ABDC 198

 

*Duration measured at .050″ tappet lift.

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The only person insane enough to make a stupid website like this.

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