Boat Shop

High Performance Equipment and Marine Parts

Rebuilt GM Marine Long Block Engines - 8 Cylinder

GM 8-Cylinder Engine

Long Block

YearsDescriptionHPLiter
CID
CylsBlock
Casting
Numbers
Standard
Rotation
Reverse
Rotation
*Dipstick on port side of block.
76-85 2 Piece rear main seal. Valve covers bolt around perimeter. 200 & 230 5.0L
305 CID
V-8 909, 979, 776, 777, 371, 778 GM305LA GM305RA GM305LAT* Not Available
85-87 1 piece rear main seal. Valve covers bolt around perimeter. Double check rear main seal. This is not a very common engine. 200 & 230 5.0L
305 CID
V-8 535, 551, 627, 058 GM305LB GM305RB GM305LBT GM305RBT
87-95 1 piece rear main seal, flat tappet. Valve covers bolt down center. Has metal timing cover. 200 & 230 5.0L
305 CID
V-8 535, 551, 627, 058 GM305LC GM305RC GM305LCT Not Available
87-95 1 piece rear main seal. Valve cover bolt down center. Roller cam engine. Has metal timing cover. 200 & 230 5.0L
305 CID
V-8 535, 551, 627, 058 GM305LD -- GM305LDT --
95-99 8 or 10 bolt timing cover. Timing cover is plastic. 12 bolt intake. R and R only. Can use the GM305LD and use tin timing cover. 200 & 230 5.0L
305 CID
V-8   Not Available -- -- --
96-99 8 bolt intake. 10 bolt timing cover. 200 & 230 5.0L
305 CID
V-8 880, 878 GM305LF -- GM305LFT --
67-85 2 piece rear main seal. Valve covers bolt around perimeter. 2 bolt main. 260 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LA GM350RA GM350LAT* GM350RAT*
67-85 2 piece rear main seal. Valve covers bolt around perimter. 4 bolt main. 260 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LAF GM350RAF GM350LAFT* GM350RAFT*
67-85 2 piece rear main seal. Valve covers bolt around perimter. 4 bolt main. This is a cam upgrade. 275 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LAFHO -- GM350LAFHOT* --
86-87 1 piece rear main seal. Valve covers bolt around perimeter. 2 bolt main. 260 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LB GM350RB GM350LBT GM350RBT
86-87 1 piece rear main seal. Valve covers bolt around perimeter. 4 bolt main. Double check the rear main seal. This is not a very common engine. 260 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LBF GM350RBF GM350LBFT GM350RBFT
86-87 1 piece rear main seal. Valve covers bolt around perimeter. 4 bolt main. This is a cam upgrade. 275 5.7L
350 CID
V-8 245, 379, 010, 014, 678, 388, 618 GM350LBFHO -- GM350LBFHOT --
88-95 1 piece rear main seal. Valve covers bolt down center. 2 bolt main. Has metal timing cover. Flat tappet. Works for carbureted or fuel injected. 12 bolt intake. 260 5.7L
350 CID
V-8 548, 526, 148, 638 GM350LC GM350RC GM350LCT GM350RCT
88-94 1 piece rear main seal. Valve covers bolt down center. 4 bolt main. Has a metal timing cover. 260 5.7L
350 CID
V-8 548, 526, 148, 638 GM350LCF GM350RCF GM350LCFT GM350RCFT
88-94 1 piece rear main seal. Valve covers bolt down center. 4 bolt main. This is a cam upgrade. Has a metal timing cover. 275 5.7L
350 CID
V-8 548, 526, 148, 638 GM350LCFHO -- GM350LCFHOT --
88-94 1 piece rear main seal. Valve covers bolt down center. Roller cam engine. Has metal timing cover. Also available in dyno-tested version: GM350LDCD. 260 5.7L
350 CID
V-8 548, 526, 148, 638 GM350LD -- GM350LDT --
95-99 1 piece rear main seal. Roller cam. Timing cover plastic. 12 bolt intake. Mechanical fuel pump. Can use GM350LD and use tin timing cover. 260 5.7L
350 CID
V-8 880 GM350LE -- GM350LET --
95-99 1 piece rear main seal. Roller cam. Timing cover plastic. 12 bolt intake with electric fuel pump. 260 5.7L
350 CID
V-8 880 GM350LEI -- GM350LEIT --
96-05 1 piece rear main seal. Roller cam. Plastic timing cover. Has 8 bolt intake. Mechanical fuel pump. 260 5.7L
350 CID
V-8 880 GM350LF -- GM350LFT --
96-05 1 piece rear main seal. Roller cam. Plastic timing cover. Has 8 bolt intake. Electric fuel pump. 260 5.7L
350 CID
V-8 880 GM350LFI GM350RFI GM350LFIT --
73-90 2 piece rear main seal. Oval intake port heads. 330 7.4L
454 CID
V-8 289 GM454LA GM454RA GM454LAT GM454RAT
73-90 2 piece rear main seal. Round intake port heads. This engine is a direct substitute for the GM454LA or GM454RA. 330 7.4L
454 CID
V-8 959, 445, 286, 775 GM454LAS GM454RAS GM454LAST GM454RAST
73-90 2 piece rear main seal. Oval intake port heads. This engine is a cam upgrade. 350 7.4L
454 CID
V-8 289 GM454LAHO -- GM454LAHOT --
91-97 1 piece rear main seal. Oval intake port heads. Flat tappet. 330 7.4L
454 CID
V-8 182, 313 GM454LB GM454RB GM454LBT GM454RBT
91-97 1 piece rear main seal. 10 bolt timing cover. HO series. R and R only. 360 7.4L
454 CID
V-8 182 GM454LC -- GM454LCT --
96-99 Gen VI. 6 bolt timing cover. Roller cam engine. Electric fuel pump. 330 7.4L
454 CID
V-8 297, 313 GM454LD -- GM454LDT --
-- Gen IV. 2 piece rear main. Flat tappet. Head casting 188. H.O. series. 370 7.4L
454 CID
V-8 286 GM454LE -- GM454LET --
91-97 Gen V. 1 piece rear main seal. Steel crankshaft. Flat tappet. Electric fuel pump. Head casting 088. 330 7.4L
454 CID
V-8 182 GM454LF -- GM454LFT --
91-97 Gen V. 1 piece rear main seal. 4 bolt main. Roller lifters. Head casting 088. Need customer's heads. 330 7.4L
454 CID
V-8 297 GM454LG -- -- --
96-03 1 piece rear main seal. Roller. 6 bolt timing cover. Head casting 156. 330 7.4L
454 CID
V-8 297 GM454LH -- -- --
70-76 Oldsmobile engine. 325 7.5L
455 CID
V-8 297 GM455LA -- -- --
91-98 Standard base replacement. R and R only. 360 8.2L
502 CID
V-8 859 GM502LA -- -- --