Page 675 - 2022-23 Auto Performance Drag Racing

Standard Gap “Drop-In” Plasma Moly Piston Ring Sets By Application
Speed-Pro’s standard gap “drop-in” Plasma Moly piston ring sets may be installed right out-of- the-box. Sets include Plasma Moly-faced, ductile iron top rings, taper face iron second rings, and standard-tension stainless steel SS-50 oil rings. Please specify oversize (Std., .020", .030", .040", .060") when ordering.
SEAR9903
DRAG RACING
Engine Std. Bore Top Ring 2nd. Ring Oil Ring Sizes Available Part No.
Chevy
302, 327, 350
4.000"
5/64"
5/64"
3/16"
Std., .030"
SEAR9903
1/16"
1/16"
3/16"
Std., .020", .030", .040", .060"
SEAR9902
1/16"
1/16"
1/8"
.030", .060"
SEAR9968
400
4.125"
5/64"
5/64"
3/16"
.030",
SEAR10374
1/16"
1/16"
3/16"
Std., .030", .040"
SEAR10375
402
4.125"
5/64"
5/64"
3/16"
.030", .060"
SEAR10374
1/16"
1/16"
3/16"
Std., .030", .040"
SEAR10375
427, 454
4.250"
5/64"
5/64"
3/16"
Std., .030", .060"
SEAR9905
1/16"
1/16"
3/16"
Std., .030", .060"
SEAR9904
Chrysler
360
4.000"
5/64"
5/64"
3/16"
Std., .030"
SEAR9903
1/16"
1/16"
3/16"
Std., .020", .030", .040", .060"
SEAR9902
383
4.250"
5/64"
5/64"
3/16"
Std., .030", .060"
SEAR9905
1/16"
1/16"
3/16"
Std., .030", .060"
SEAR9904
Ford
289, 302, 351W, 351C, 351M, 400
4.000"
5/64"
5/64"
3/16"
Std., .030"
SEAR9903
1/16"
1/16"
1/8"
Std., .030", .060"
SEAR9968
1/16"
1/16"
3/16"
Std., .020", .030", .040", .060"
SEAR9902
File-Fit Plasma Moly Piston Ring Sets By Bore Size
Speed-Pro offers a large selection of file-fit Plasma Moly piston ring sets by bore size. Sets include plasma moly-faced ductile iron top rings, taper-faced iron second rings, and stainless steel SS-50 oil rings in standard or low tension. Please specify oversize (.005", .035", .045", .065") when ordering.
SEAR9343
Bore Dia. Ring Set No. Sizes Available No. Cylinders Top Ring 2nd. Ring Oil Ring Oil Ring Tension
4.000" SEAR9343 .005", .025", .045", .065" 8 5/64" 5/64" 3/16" Std.
4.000" SEAR9771 .005", .025", .035", .045", .065" 8 1/16" 1/16" 3/16" Std.
4.000" SEAR9401* .035", .045", .065" 8 1/16" 1/16" 3/16" Low
4.000" SEAR20100† .035" 8 .043" .043" 3mm Light
4.125" SEAR5879 .005", .035", .065" 8 5/64" 5/64" 3/16" Std.
4.125" SEAR10248 .005", .025", .035", .045", .065" 8 1/16" 1/16" 3/16" Std.
4.125" SEAR10202 .035" 8 1/16" 1/16" 1/8" Std.
4.125" SEAR20109† .005", .035" 8 .043" .043" 3mm Light
4.125" SEAR9346* .005", .035", .045", .065" 8 1/16" 1/16" 3/16" Low
4.250" SEAR9590 .005", .035", .065" 8 5/64" 5/64" 3/16" Std.
4.250" SEAR9745 .035", .065" 8 1/16" 1/16" 3/16" Std.
4.250" SEAR9344* .005", .065" 8 1/16" 1/16" 3/16" Low
4.320" SEAR9224 .035", .065" 8 5/64" 5/64" 3/16" Std.
4.320" SEAR9798 .005", .035", .065" 8 1/16" 1/16" 3/16" Std.
4.320" SEAR9278* .005", .035", 8 1/16" 1/16" 3/16" Low
4.360" SEAR10601 .005", .035" 8 1/16" 1/16" 3/16" Std.
4.360" SEAR9374* .035" 8 1/16" 1/16" 3/16" Low
4.375" SEAR9799 .005" 8 1/16" 1/16" 3/16" Std.
4.375" SEAR9406* .005" 8 1/16" 1/16" 3/16" Low
4.440" SEAR10133 .005", .035" 8 1/16" 1/16" 3/16" Std.
4.500" SEAR10451 .005", .035" 8 1/16" 1/16" 3/16" Std.
4.500" SEAR10317* .005" 8 1/16" 1/16" 3/16" Low
4.500" SEAR10316* .005", 8 .043" 1/16" 3/16" Low
4.563" SEAR10441 .005" 8 1/16" 1/16" 3/16" Std.
4.600" SEAR20104* .005" 8 .043" .043" 3mm Low
4.625" SEAR10433 .005" 8 1/16" 1/16" 3/16" Std.
* Includes low-tension oil ring package for drag racing only. † Includes light-tension oil ring package for drag racing engines with crankcase evacuation systems.
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2022-23