PFM66766 Adj. Ring Compressor

Hypereutectic. Flat top.2 valve reliefs. Left or right bank. Replace in full sets only. Coated skirts.

Brand:Silvolite Engine Make:Silv-O-Lite pdm:Base Number:1448HC pdm:Bore Diameter:4.25 IN pdm:Compression Height:41.3 MM pdm:Compression Height:1.627 IN pdm:Crown Type:FLAT TOP pdm:Bore Diameter:108 MM pdm:Compression Ratio:9.0, 8.2 pdm:Engine Family:Chevy Big Block Mark IV pdm:Engine Manufacturer:Chevrolet pdm:Eng. Disp. In.:454 pdm:Oversizes:STD .020 .030 .040 .060 .080 .100 .110 pdm:Oil Ring Thickness:0.1875 IN pdm:Oversize:.040 pdm:Oversized:Yes pdm:Oe Assembly:3993874 pdm:Crown (cc):+2cc pdm:Pin Type:Press pdm:Piston Pin Outside Diameter:.990 IN pdm:Pin Configuration:Offset pdm:Eng. Disp Liters:7.4 pdm:Pin Number:0990x230A pdm:Piston Head Type:Flat pdm:Second Compression Ring Thickness:0.0781 IN pdm:Piston Pin Outside Diameter:25.1 MM pdm:Ring Pack:5/64, 5/64, 3/16 pdm:Piston Material:Cast 390 Hypereutectic Alloy pdm:Sold As:Sold as a set, priced per piece pdm:Year From:1970 pdm:line_code:SLV pdm:Year To:1983 pdm:Top Land:.245 pdm:Year Range:1970-1983 pdm:internal_sku:SLV1448HC.040 pdm:Top Compression Ring Thickness:0.0781 IN