Page 709 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Standard Gap “Drop-In” Plasma Moly Piston Ring Sets By Application
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ting. 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 size/oversize (Standard, .020", .030", .040", .060") when ordering.
Standard Top 2nd Oil Sizes
Engine Bore Ring Ring Ring Available Part No.
Chevy
5/64" 5/64" 3/16" Standard, .030", .060" SEAR9903

302, 327, 350 4.000" 1/16" 1/16" 3/16" Standard, .020", .030", .040", .060" SEAR9902
1/16" 1/16" 1/8" Standard, .030", .060" SEAR9968
400 4.125" 5/64" 5/64" 3/16" .030", .060" SEAR10374
1/16" 1/16" 3/16" Standard, .030", .040" SEAR10375
Ford
5/64" 5/64" 3/16" Standard, .030", .060" SEAR9903
289, 302, 351W
351C, 351M, 400 4.000" 1/16" 1/16" 1/8" Standard, .030", .060" SEAR9968
1/16" 1/16" 3/16" Standard, .020", .030", .040", .060" SEAR9902
302 4.000" 1.5mm 1.5mm 4.0mm Standard, .030" SEAR10471
(1986-94 Only)

Claimer Series Piston Ring Sets
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rings for maximum oil control. Please specify size/oversize (Standard, .030", .040", .060") when ordering.
Standard Top 2nd Oil Sizes
Engine Bore Ring Ring Ring Available Part No.
Chevy
1/16"
Standard 1/16" 3/16" Standard, .030", .060" SEAR6902
302, 327, 350 4.000"
1/16"
Moly 1/16" 3/16" Standard, .030", .040", .060" SEAR8902
1/16" 1/16" 3/16" .030", .040" SEAR8375
Moly
Ford
4.000" 1/16" 1/16" 3/16" Standard, .030", .060" SEAR6902
289, 302, 351W Standard
1/16"
4.000" 1/16" 3/16" Standard, .030", .040", .060" SEAR8902
Moly

Powerforged Pistons
VMS-75 alloy pistons are CNC-machined to tight tolerances, media-blasted and Duroshield coated. Avail-
able in standard, +.020", +.030", +.040", and +.060" sizes. (Specify size after part number (xx)). Sold in weight
matched sets of eight, with wrist pins.
Comp. Comp. Top 2nd Oil
Engine Part No. Available Sizes Use Ratio Height Ring Ring Ring
Chevy
302 SEAL2210AF30 .030" Race 12.0:1 1.805" 1/16" 1/16" 1/8"
SEAL2165Fxx .030", .040" Street 8.9:1 1.671" 5/64" 5/64" 3/16"
327
SEAL2166AFxx .030", .040" Street 10.2:1 1.675" 5/64" 5/64" 3/16"
SEAL2256Fxx Standard, .020", .030", .040", .060" Street 9.7:1 1.563" 5/64" 5/64" 3/16"
350 SEAL2252YF30 .030" Street 10.0:1 1.565" 1/16" 1/16" 3/16"
SEAL2491NFxx* .030", .060" Race/Stroker 10.7:1 1.430" 1/16" 1/16" 3/16"
Ford
289 SEAL2482Fxx .030", .040" Street 9.1:1 1.605" 5/64" 5/64" 3/16"
302, 1973-76 SEAL2441F30 ‡ .030" Street 6.7:1 1.560" 5/64" 5/64" 3/16"
302, SEAL2482Fxx .030", .040" Street 9.1:1 1.605" 5/64" 5/64" 3/16"
1968-72
And 1977-Up SEAL2488F30 † .030" Street/Strip 9.5:1 1.619" 1.5mm 1.5mm 4mm
351W SEAL2446F30 ‡ .030" Street 9.1:1 1.772" 5/64" 5/64" 3/16"
* Must use 400 crankshaft (3.750" stroke) and 350 rods (5.700" length).
† Block with 8.206" deck height.
‡ Blocks with 8.229" deck height.
Compression ratios are based on these combustion chambers: small block Chevy- 64cc, small block Ford- 63cc.

2019-20 CIRCLE TRACK PARTS AND ACCESSORIES 705