These pistons are a 4.350" (.030 over) bore flat top piston which will work in a 440 block with a stock 3.75" stroke and factory length 6.76" rod. Click on the part to see our table with detailed compression ratios. All our platinum pistons use 1/16, 1/16, 3/16 ring pack for less frictional loss, and weight saving, full floating .990 pin size.
These pistons are a 4.360" (.040 over) bore flat top piston which will work in a 440 block with a stock 3.75" stroke and factory length 6.76" rod. Click on the part to see our table with detailed compression ratios. All our platinum pistons use 1/16, 1/16, 3/16 ring pack for less frictional loss, and weight saving, full floating .990 pin size.
These pistons are a 4.375" (.055 over) bore flat top piston which will work in a 440 block with a stock 3.75" stroke and factory length 6.76" rod. Click on the part to see our table with detailed compression ratios. All our platinum pistons use 1/16, 1/16, 3/16 ring pack for less frictional loss, and weight saving, full floating .990 pin size.
Our Torco Engine Assembly lube is highly recommended for use on pistons and pins during assembly. It's a high pressure lube formula with anti-wear, anti-friction and anti shock chemistries. And it's oil soluable, which means it will protect your engine after initial assembly, and during first startup, after which it is washed away by your regular engine oil as the engine is broken in. Use a dime sized dab on each side of the piston skirt about a half inch up from the bottom of the piston, and coat the piston pin during assembly with the pistons and connecting rods. One ounce tube is enough to do one complete engine.
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440 Source Inc.
3680 Research Way Carson City, NV 89706
775.883.2590 / Sales@440source.com
