GM Big Block V8 Gen 4 (2 Piece Rear Seal)(1991 and earlier)


Bearings

CLECB743P
Click To Select Size
Rod Bearing Set for GM 7.4L 454 CID Big Block V8
Price: $46.95
Weight: 0.94
Rod Bearing Set for GM 454 cid V8, sold in set per engine (FED8-3190CP)
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
CLEMS829P
Click To Select Size
Main Bearing Set for GM 7.4L 454 CID Big Block V8
Price: $40.95
Weight: 1.66
Main Bearing Set for GM 454 cid 7.4L big block V8, sold in sets per engine (FED4400M).
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
CLESH616SCam Bearing Set for GM 7.4L 454 CID Big Block V8
Price: $22.95
Weight: 1.08
Cam Bearing Set for GM 454 cid 7.4L big block V8, sold in sets per engine (FED1404M)
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Freeze Plugs

FED381-8009Freeze Plug Set for GM 7.4L 454 CID Big Block V8
Price: $18.95
Weight: 0.90
Brass Freeze Plug Set fits 1971-1991 (GEN 4) 7.4L 454 CID GM Big Block V8. These Expansion Plugs (Freeze Plugs) are Made of Brass For Marine Use.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Gaskets and Seals

VIC48129Seal Timing Cover for GM 454 7.4L Big Block RH V8 R047180
Price: $19.95
Weight: 0.47
Quantity in Package:
Timing Cover Seal fits GM 454 CID 7.4L V8 Big Block Right Hand Rotation
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICJV566Seal Rear Main for GM Big Block V8 Gen 4 Right Hand 2 Piece
Price: $99.95
Weight: 0.10
Rear Main Seal Reverse Rotation Seal Fits GM Big Block V8 427/454/502 CID Gen 4 2 Piece.

This fits engines that have a two piece rear main seal 1991 and earlier.

The reverse rotation 454 will have two gears (No Chain) that drives the camshaft.


Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICJV866Gasket Set Timing Cover GM 454 7.4L With Seal LH Rotation Gen 4
Price: $16.95
Weight: 0.91
Timing Cover Gasket/Seal Set for the following standard rotation GM Big Block V8 Gen 4 marine engines. A Gen 4 engine can be identified by having a fuel pump mounted directly to the engine block:
454 (7.4L Gen 4), 427, 502 (8.2L) cid Big Block.
Fits Chris Craft, Flagship, Hardin Marine, Indmar, Marine Power, Mercruiser, OMC, Panther Jet, PCM and Crusader Big Block LH Rotation applications.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICMS15168Gasket Intake Manifold set for 7.4L 8.2 454 502 CID GM with Square Ports
Price: $39.95
Weight: 0.26
Intake Manifold Gasket for GM Chevrolet 7.4L 454 CID Big Block V8 Engines with Square Ports.

All 454 and 502 engines with 365 and Higher FACTORY Horsepower used Square Port Cylinder Heads.

Chris Craft, Flagship Marine, Hardin Marine, Indmar, Marine Power, Mercruiser, Panther Jet Marine, PCM, and Crusader.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICMS15466Gasket Intake Manifold Set Marine GM 454 7.4L Big Block V8 Oval Port
Price: $42.95
Weight: 0.26
Quantity in Package:

Marine Intake Manifold Gasket Set for GM 454 CID 7.4L Big Block Engines with oval port cylinder heads. All marine engines with less than 365 horsepower use oval port cylinder heads.
Fits Chris Craft, Flagship Marine, Hardin Marine, Indmar Marine, Marine Power, Mercruiser, OMC, Panther Jet Marine, PCM, and Crusader applications with a 427 or 454


Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICOS30931XGasket Oil Pan Set Marine GM Big Block 454 7.4L 502 8.2L V8 Gen 4
Price: $18.95
Weight: 1.00
Oil Pan Set for GM 427/454/502 CID Big Block V8 Gen 4. A Generation 4 Engine can be identified by having a fuel pump mounted directly to the engine block.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
VICVS50169Gasket Set Valve Cover for GM 454 CID 7.4L Big Block V8 1995-prior
Price: $56.95
Weight: 0.96
Quantity in Package:
Valve Cover Gasket Set (rubber) for GM 454 CID 7.4L Big Block V8
Fits 1987-1995 Gen IV and V

Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Oil Pumps

MELIS77Shaft, Oil Pump, GM Big Block
Price: $10.95
Weight: 0.37
Oil Pump Shaft for GM Big Block V8
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELM-77GOil Pump GM 454 7.4 8.2L 502 cid Standard Crusader Mercruiser
Price: $79.95
Weight: 4.75
Oil Pump for GM 454 502 cid V8. It is a Standard pump for a stock engine.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Pistons

FEDH661CP
Click To Select Size
Piston Hypereutectic for GM 7.4L 454 CID Big Block V8
Price: $54.95
Weight: 2.00
Hypereutectic Piston for GM 454 cid 7.4L V8.

Flat top with two valve reliefs. Skirt Coated to prevent cylinder wall scuffing.

Fits most 7.4 454 standard horsepower engines (350) and less.
sold each.

Replace Mercruiser 737-6523
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Rings

HAS683
Click To Select Size
Piston Ring Set GM 7.4 454 cid Big Block V8
Price: $50.95
Weight: 1.30
Piston Ring Set for a GM 454 c.i.d.(7.4L).
BORE:4-1/4"
COMPRESSION GROOVE(S): 2.0/2.0 mm (5/64)
OIL GROOVE: 4.75 mm (3/16).
Please verify your Ring thickness before ordering.
Ring Sets are Non-Returnable.
This set includes Piston Rings for all of the Pistons in your engine (1 set per engine)

There are two different ring depths used on the 454 7.4 engine. Commonly called shallow which is .170 and less and deep groove which is .190 and more.

These are for the Deep Groove Pistons!

Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Valve Train

MEL22216Camshaft Marine Flat Tappet for Big Block GM 454 Left Hand
Price: $249.95
Weight: 10.50
Quantity in Package:
Marine Flat Tappet Cam for GM big block V8 Left Hand Rotation Engines.

Fits engines 1995 and earlier. These engines use a flat tappet camshaft.

This means there is no roller on the lifter.
Replaces Mercruiser: 431-9830

Determine your Engine rotation.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL22218Camshaft Marine Flat Tappet for GM 7.4L 454 CID Right Hand Big Block V8
Price: $329.95
Weight: 11.44
Quantity in Package:
Marine Flat Tappet Cam for GM big block V8 Right Hand Rotation. Used on Inboard engines only!

RH GM ENGIES US TWO GEARS TO TURN THE CAMSHAFT NO TIMING CHAIN!

Replaces Crusader Numbers:31117 and RA050015
Replaces Mercruiser Number:431-3427
Opposite Automotive Rotation.
Determine your Engine rotation.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL22219Camshaft Flat Tappet Chain Drive for GM 427 454 502 Left Hand Rotation
Price: $189.95
Weight: 10.22
Marine Flat Tappet Cam for GM big block V8 Chain Drive Left Hand Rotation, Standard Automotive Rotation.
Determine your Engine rotation.
Fits: 427 (7.0) 4.25 Bore Mercruiser 325
454 (7.4) 4-1/4 Bore (Mercruiser 330, 7.4-454 BRAVO, MAG ALPHA, MAG BRAVO, 370-400-420-425-440 TRS, 450-525 SC, 330 MIE, 340 MIE, 7.4 MIE W/HURTH, 7.4 EFI MIE, 454 EFI SKI, 350 MIE)
502 (8.2) 4.466 Bore.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL2532SGear Set Timing for GM V8 7.0L 427 7.4L 454 Big Block V8 Right Hand Rotation
Price: $279.95
Weight: 5.54
Timing Gear Set for GM 427/454 cid V8 Right Hand
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL2532SGear Set Timing for GM V8 7.0L 427 7.4L 454 Big Block V8 Right Hand Rotation
Price: $279.95
Weight: 5.54
Timing Gear Set for GM 427/454 cid V8 Right Hand
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL40401Timing Set for GM 7.0L 427 CID 7.4L 454 CID Big Block V8 Left Hand Rotation
Price: $74.95
Weight: 4.00
Timing Gear Chain Double Roller Set for GM 427/454 cid V8 Left Hand Rotation. Used for flat tappet chamshafts only.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL50015Push Rod for GM Big Block 7.4 454 Intake 3/8 Diameter
Price: $11.95
Weight: 0.67
Push Rod for GM 427 454 7.4 Big Block V8 3/8" Diameter for Intake valve. The intake Valve Push rod is the Shorter push rod.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MEL50016Push Rod for GM Big Block 427 454 7.4 3/8 Diameter Exhaust
Price: $11.95
Weight: 0.74
Push Rod for GM Big Block 427 454 7.4 3/8" for Exhaust Valve. The Exhaust Valve Push Rod is the longer push rod.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELJB-817Lifter Hydraulic Flat Tappet for GM 4 6 8 Cylinder
Price: $9.95
Weight: 0.91
Hydraulic Lifter for GM inline 4 & 6 cyl., small block V8s and GM 454 CID Gen. 4 (with adjustable rocker arms) with hydraulic lifter cams.
Replaces Mercruiser Number: 72638
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELMPR379Push Rod for GM Gen 4 and 5 Big Block 7.4L 454 Intake 5/16 Diameter MPR379
Price: $8.95
Weight: 0.14
Quantity in Package:
Push Rod for GM Gen 4 and Gen 5 454 cid 7.4L Big Block V8 5/16" diameter for intake valve.
The intake Valve Push rod is the Shorter push rod.
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELMPR380Push Rod for GM 454 Gen 4 and 5 Big Block V8 with 5/16 Diameter Exhaust MPR380
Price: $8.95
Weight: 0.14
Quantity in Package:
Push Rod for GM Gen 4 and Gen 5 Big Block 454 cid 7.4L V8 5/16" for Exhaust Valve.
The Exhaust Valve Push Rod is the longer push rod.

Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELMRK405Rocker Arm Kit for GM Big Block 454 7.4 1990 and earlier 19241
Price: $9.95
Weight: 0.37
Rocker Arm for GM Big Block V8 7.4 454. Fits Gen 4 1990 and earlier engines.

If you don't know if you have a Gen 4 or not, a Gen 4 will have a fuel pump boss on the block itself.
Replaces Mercruiser: 19241
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELV0997Valve, Intake, GM Big Block, 1.84 Inch
Price: $15.95
Weight: 0.50
Intake Valve, GM Big Block V8, 1.84" diameter
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELV1136Valve, Intake, GM Big Block, 2.3 Inch
Price: $14.95
Weight: 0.50
Intake Valve, GM Big Block V8, 2.30" diameter
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELV1164Valve, Intake, GM Big Block, 2.19 Inch
Price: $17.95
Weight: 0.60
Intake Valve, GM Big Block V8, 2.19" diameter
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal
MELV1261Valve, Exhaust, GM Big Block, 1.72 Inch
Price: $20.95
Weight: 0.50
Exhaust Valve, GM Big Block V8, 1.72" diameter
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal

Other Engine Items

QSTHB454NBolt Set Cylinder Head for GM 427 454 502 Big Block Marine Engine
Price: $69.95
Weight: 5.40
Fits GM 427, 454 and 502 Big Block V8. Includes 24 Long Bolts and 8 Short Bolts.
One set needed per engine
Hydraulic Lifter, Chain Drive, LH/RH Rotation, 2-Piece Rear Main Seal