Page 533 - 2022-23 Auto Performance Drag Racing

Valve Cover Gaskets
DRAG RACING
Mr. Gasket offers three
types of valve cover
gaskets: traditional,
high-density cork/rub-
ber, steel core Ultra-Seal, and steel core molded rubber.
Collector and Header Muffler Gaskets
Prevent exhaust leaks between the header and collector or muffler. Gaskets fit Hedman, Hook- er, Flowtech, and Dynomax headers. Available in standard Mr. Gasket, Ultra-Seal,
MRG76
and blow-out proof Copper Seal.
Standard bulk gaskets are sold MRG5980 MRG7176C individually. Ultra-Seal and Copper
Seal gaskets are sold in pairs.
Note: Copper Seal gaskets may also be ordered individually by removing the “C” from the end of the part number.
Application
Thk.
Mr. Gasket
Ultra-Seal
Molded Rubber
American Motors, 1966-79 290-401
3/16"
MRG875
—
—
SB Chevy, 1958-86 265-400
3/16"
MRG175
MRG5860
MRG5853G
SB Chevy, 1958-86 265-400
3/16"
—
MRG585G*
—
SB Chevy, 1958-86 265-400
5/16"
MRG179
MRG5861
—
SB Chevy, 1958-86 265-400
5/16"
—
MRG5864†
—
SB Chevy, 1986-96 305-350
3/16"
MRG168
MRG5867
—
BB Chevy, 1965-90 396-454
3/16"
MRG177
MRG5862
—
BB Chevy, 1965-90 396-454
5/16"
MRG182
MRG5863
—
SB Chrysler, 1964-91 273-360
3/16"
MRG379
MRG5876
—
BB Chrysler, 1963-78 383-440
3/16"
MRG378
MRG5877
—
BB Chrysler, Indy Cylinder Head
1/16"
MRG382
—
—
BB Chrysler, 1964-71 426 Hemi
3/16"
MRG374
—
—
SB Ford, 1965-95 289-351W
3/16"
MRG276
MRG5870
—
Ford, 1969-82 351C, 351-400
3/16"
MRG274
MRG5871
—
BB Ford, 1958-76 332-428 “FE”
3/16"
MRG275
—
—
BB Ford, 1968-88 429-460
3/16"
MRG278
—
—
Oldsmobile, 1964-76 330-455
3/16"
MRG476
MRG5875
—
Pontiac, 1964-76 326-455
3/16"
MRG576
MRG5869
—
Applications
Dia.
Bolt Circle
Bolt Hole
Standard Bulk
Packaged Ultra-Seal
Packaged Copper Seal
Hedman/Hooker/ Others
2-1/2"
3-1/2"
3/8"
MRG76
MRG5980
MRG7176C
Hedman/Hooker/ Others
3"
3-7/8"
3/8"
MRG1204
MRG5971
MRG7177C
Hedman/Hooker/ Others
3-1/2"
4-7/16"
3/8"
MRG1203
MRG5972
MRG7178C
*Molded rubber with steel carrier. †Clears relocated rocker studs and Jesel shaft assemblies.
Made from durable,
heat-resistant nitrile
rubber compound and
die cut for a perfect
fit. Gaskets are of-
fered in 1/16" and 1/4"
thicknesses as bulk or skin packaged.
MRG4400
Kits include all of the gaskets required to complete a camshaft change.
Part No.
Timing Cover Seals and Gaskets
MRG54
MRG55C
MRG758
Cam Change Gasket Kits
Carburetor Base Gaskets
Description
Bulk Pkg. 1/16" Thick
Skin Pkg. 1/16" Thick
Skin Pkg. 1/4" Thick
Holley 4BBL/Carter AFB, Open Center
MRG54
—
—
Holley 4BBL 4-Hole, 1-11/16" Bores
—
MRG55C
MRG758
Rochester Quadrajet, 4-Hole
MRG56
MRG56C
—
Rochester Quadrajet, Open Center
MRG56A
—
—
Carter AFB, 1-7/16" Bores
MRG57
—
—
Carter Thermoquad, 4-Hole
MRG57A
—
—
Holley 4500 Dominator, 4-Hole
MRG58B
—
—
Holley 4500 Dominator, Open Center
MRG58C
—
—
Holley 4BBL Spread Bore, Open Center
MRG58E
—
—
Description
MRG4400
SB Chevy, 1959-74 262-400
MRG4403
SB Chevy, 1975-79 262-400
MRG4405
BB Chevy, 1965-90 396-454, Oval Port
Part No.
Description
Timing Cover Seals
MRG17
Chevy Big Block, 1965-99 396-454, Metal Clad
MRG18
Chevy Small Block, 1955-96 262-400, Metal Clad
MRG781G
Chrysler Big and Small Block,
1957-91 318-360 “A”, 383-440 “B”/“RB”/Hemi
Timing Cover Gaskets
MRG90
Chevy Small Block, 1955-96 262-400, Cork/Rubber
MRG92
Chevy Small Block, 1955-96 262-400, Syntheseal
MRG93
Chevy Small Block, 1955-96 262-400, Composite
MRG94
Chevy Big Block, 1965-99 396-454, Syntheseal
MRG790
Chrysler Small Block, 1967-91 318-360
MRG792G
Ford Small Block, 1962-95 221-351W, Exc. 302 Boss
MRG793G
Ford, 1970-82 351C, 351M-400
MRG795G
Ford Big Block, 1968-88 429-460
Air Cleaner Base Gasket for Dominator
MRG6186
Precision die-cut, 1/16" thick cellulose/nitrile composite gasket fits all Dominator style carburetors.
Rear Main Seals Part No.
Description
Fuel Bowl and Metering Block Gaskets
Popular gaskets are offered for a variety of Holley carburetors.
Part No.
Description
MRG1960
Chevy Small Block, 1975-86, Silicone Dual Lip
MRG1965
Ford Big Block, ’68-88 429-460; Olds Big Block, 1965-76 400-455
MRG1968
Chrysler Big Block, 1959-78 383-440, 426 Hemi
MRG1969
Chevy Big Block, 1965-90
MRG1509
Fuel Bowl & Metering Block Gaskets, Model 2300/4150/4160, (1) Each
MRG6183
Fuel Bowl & Metering Block Gaskets, Model 2300/4150/4160/4500, (5)
Chevy Water Outlet Gaskets
Blower Base Gasket MRG3052S
Precision cut from 1/16" thick cellulose/ nitrile composite material, 14-71 blower gasket delivers a superior fit and seal.
Part No.
Description
MRG738G
Chevy V-8 Aluminum Carrier/Silicone Bead
MRG740
Chevy V-8 Std. Material
531
2022-23