TAKEN FROM 1999 GMPP CATALOGelt4.gif (50088 bytes)

CHEVROLET SMALL BLOCK SERVICE PARTS LIST
12371172 LT4 ENGINE KIT
GROUP
NUMBER
SERVICE
NUMBER
DESCRIPTION QTY
  N/S BLOCK, BARE CAST IRON (4 BOLT MAIN)  
  N/S *CAP, BEARING, REAR  
  N/S *CAP, BEARING, FRONT  
  N/A *CAP, BEARING, 2,3,4  
  3932480 *BOLT, OUTER CAP (7/16 X 14 X 3 11/32")  
  3877669 *BOLT, INNER CAP )7/16 X 14 X 2")  
  3826504 *PLUG, (BRASS FREEZE 41.5MM DIA)  
  474005 *BEARING, CAM #1  
  474006 *BEARING, CAM #2  
  474007 *BEARING, CAM #3, 4  
  10241154 *PLUG, CAM REAR  
  12338119 *PIN DOWEL, REAR TRANS 5/8" DIA 2
  10105879 *PIN DOWEL, FRONT 1/4" DIA 2
  585927 *PIN DOWEL, HEAD 5/16" DIA 4
  14081701 *PLUG 1/4" PIPE THREAD, (SOCKET HEAD)  
  14091563 *PLUG, STEEL CUP, OIL GALLEY (.476")  
  9441003 *DOWEL, RR SEAL HSG LOCATOR PIN 7/16"  
  3889330 *PLUG, DRAIN, BLOCK (1/4-18 NPT) 2
  10120990 BEARING, MAIN (1,2,3,4 ) STD  
  10120993 BEARING, MAIN (REAR) STD  
  N/S HEAD, COMPLETE WITH VALVES, ALUM, 54CC  
  12557773 *HEAD, BARE W/SEATS & GUIDES & STUDS  
  10212809 *SHIM, VALVE SPRING  
  12555331 *VALVE, INTAKE 1.90"  
  12551313 *VALVE, EXHAUST 1.50"  
  12551483 *SPRING, VALVE  
  10212808 *CAP, VALVE STEM  
  10212810 *SEAL, VALVE STEM OIL  
  24503856 *KEY, VALVE STEM  
  12550011 *STUD, VALVE ROCKER ARM  
  12551488 GASKET, CYL HEAD  
0.293 10168525 BOLT, HEAD (LONG 7/16 X 14 X 3 51/64") 14
  10168526 BOLT, HEAD (MED 7/16 X 14 X 3 1/16") 4
  10168527 BOLT , HEAD (SHORT 7/16 X 1 3/4") 16
0.646 12551485 CRANKSHAFT  
1.043 12554816 DEFLECTOR W/ WINDAGE TRAY  
  9442946 NUT, OIL DEFLECTOR  
CHEVROLET SMALL BLOCK SERVICE PARTS LIST
12371172 LT4 ENGINE KIT
GROUP
NUMBER
SERVICE
NUMBER
DESCRIPTION QTY
0.137 12554312 HOUSING, CRANKSHAFT, REAR 1
  14080362 *STUD (5/16 " - 18) 2
  12554314 *SEAL, GASKET CRANK OIL 2
  12555714 GASKET, REAR HOUSING 1
  14101030 BOLT, REAR OIL SEAL HOUSING (1/4 X 7/8 ") 2
  14101032 BOLT, REAR OIL SEAL HOUSING (1/4 X 1 3/4") 1
  14101058 STUD, CRANKSHAFT REAR OIL HOUSING 1
  12337984 NUT, CRANKSHAFT REAR OIL HOUSING  
0.659 12550097 HUB, CRANKSHAFT BALANCER 1
0.662 9440024 BOLT, CRANK BALANCER HUB (7/16 X 20 X 2.25") 1
  10128306 WASHER, CRANKSHAFT BALANCER HUB 1
  12550096 KEY, CRANKSHAFT BALANCER HUB 1
0.603 10108688 ROD, CONNECTING ASM (POWDERED METAL) 8
  461372 *BOLT, CONNECTING ROD 2
  2250054 *NUT, CONNECTING ROD 2
0.616 12523924 BEARING, CONNECTING ROD (STD)  
0.629 12528828 PISTON, W/PIN (STD) 8
0.643 12528817 RING KIT, PISTON (STD) 8
1.426 12528503 PAN OIL, (W/ DRAIN PLUG & GASKETS)  
1.453 24100042 *PLUG, OIL PAN DRAIN  
1.456 3536966 *SEAL, OIL PAN DRAIN  
1.429 10108676 *GASKET, OIL PAN  
1.428 14080363 STUD, OIL PAN (1/4 - 20 X .50")  
  14080362 STUD, OIL PAN (5/16 - 18 X 43/64")  
  1359887 NUT, OIL PAN (5/16 " -18)  
  9440033 BOLT OIL PAN (1/4 " - 20 - .62)  
1.426 12553058 REINFORCEMENT,OIL PAN LH  
1.426 12553059 REINFORCEMENT, OIL PAN RH  
1.652 12555283 PUMP ASM OIL (.742" DIA TUBE)  
  12550106 SCREEN ,OIL PUMP  
1.105 3998287 SHAFT, OIL PUMP DRIVE W/RETAINER  
  3764554 *RETAINER, OIL PUMP DRIVE SHAFT  
  11517518 BOLT, OIL PUMP (7/16 X 14 X 2 3/8")  
CHEVROLET SMALL BLOCK SERVICE PARTS LIST
12371172 LT4 ENGINE KIT
GROUP
NUMBER
SERVICE
NUMBER
DESCRIPTION QTY
  14093637 BOLT, WATER PUMP DRIVE (1/4 - 20 X .50") 2
  10128487 PIN, WATER PUMP DRIVE .31MM  
  12551727 SHAFT, WATER PUMP DRIVE W/BEARING & GEAR 1
0.519 12551142 CAMSHAFT, W/PIN, HYD ROLLER 1
  10214485 *PIN, CAMSHAFT SPROCKET LOC 1
  10168501 RETAINER, CAMSHAFT 1
  14093637 BOLT, CAMSHAFT RETAINER 2
0.736 12555885 SPROCKET, CAMSHAFT 1
  94248773 BOLT SPROCKET CAMSHAFT 3
0.728 12555886 SPROCKET, CRANKSHAFT 1
0.724 12555887 CHAIN , TIMING 1
0.426 10241740 ROD, PUSH 16
0.459 17120735 LIFTER, VALVE (HYD ROLLER) 16
  12550002 GUIDE, VALVE LIFTER 8
  14101116 RETAINER, VALVE LIFTER GUIDE 1
  12557779 ARM, VALVE ROCKER (1.6 RATIO / ROLLER)  
0.429 10215349 NUT,VALVE ROCKER ARM  
0.386 12552322 COVER, ROCKER ARM (RH)  
  12552321 COVER, ROCKER ARM (LH)  
  10108626 *GROMMET, VENT  
  10207699 *GROMMET, PCV VALVE  
  10108625 *GASKET, ROCKER COVER 2
  10108674 STUD, VALVE ROCKER COVER  
  12338094 BOLT,VALVE ROCKER COVER(6 MM -1 X 45MM) 8
1.758 12554955 CAP, OIL FILL  
  12552427 COVER, FRONT  
  12552428 *SEAL, DISTRB  
  10217886 *SEAL, WATER PUMP BRG  
  10128316 *SEAL, FRONT OIL  
  10128293 *GASKET , FRT COVER  
  9442397 * BOLT, FRONT COVER  
CHEVROLET SMALL BLOCK SERVICE PARTS LIST
12371172 LT4 ENGINE KIT
LOOSE PARTS SHIPPED WITH ENGINE
  SERVICE
NUMBER

DESCRIPTION

QTY
  12527739 PUMP KIT, WATER W/GASKET 10128343 1
  9423592 BOLT, WATER PUMP 4
  12553792 SEAL, WATER PUMP 1
  9440073 BOLT, WATER PUMP 2
  10128334 COUPLING, WATER PUMP DRIVE SHAFT 1
  24502574 MANIFOLD, INTAKE 1
  9439918 BOLT, INTAKE MANIFOLD 11
  10106420 STUD, INTAKE MANIFOLD 1
  12367777 GASKET, INTAKE MANIFOLD  
  1104067 DISTRIBUTOR, HEI (COMPLETE)  
  10096197 CLAMP, DISTRIBUTOR HOLD DOWN 1
  10108445 SEAL, DISTRIBUTOR  
  14091544 BOLT, DISTRIBUTOR HOLD DOWN CLAMP 1
  12367776 PLUG, FRT COVER (FOR CRANK SENSOR HOLE)  
  12556260 PIPE, COOL AIR BLEED T/W NUT 14057004  
  12367600 PLUG, DISTRIBTOR 1
  12551486 BALANCER, CRANK  
  12367601 TAPE, TIMING IGNITION  
  9442398 BOLT DISTRIBUTOR (1/4" - 20 - .52) 3
  9442448 BOLT, BALANCER (7/16" - 14 -.88) 3
ADDITIONAL TECH INFORMATION
LT4 Longblock LT1 / LT4 variables GMPP LT4 heads LT1 vs LT4 Vette
Rebuilding the LT1 Cam Selection R&R Head Flow Comparo HOME 96Legacy