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Home  >  Pistons > Pistons for 383 Blocks Sort by Price Low->High Price High->Low Title A->Z Title Z->A Item Code A->Z Item Code Z->A Popularity         Item # Image Description Price 5040 Platinum Series Pistons - 4.280 -4 FT These pistons are a 4.280" (.030 over) bore flat top piston which will work in a 383 block with either our 3.75" stroke and 6.76" rod "438CI" stroker combination, or our 4.25" stroke and 6.535" rod "496CI" stroker combination. The compression ratios and distance below deck will change slightly depending on which stroker combination you are using these pistons with. Click on the part to see our table with detailed compression ratios. In Stock $599.00 5050 Platinum Series Pistons - 4.310 -4 FT These pistons are a 4.310" (.060 over) bore flat top piston which will work in a 383 block with either our 3.75" stroke and 6.76" rod "438CI" stroker combination, or our 4.25" stroke and 6.535" rod "496CI" stroker combination. The compression ratios and distance below deck will change slightly depending on which stroker combination you are using these pistons with. Click on the part to see our table with detailed compression ratios. In Stock $599.00 5042 Platinum Series Pistons - 4.280 -20 Dished These pistons are a 4.280" (.030 over) bore -20cc DISHED piston which will work in a 383 block with either our 3.75" stroke and 6.76" rod "438CI" stroker combination, or our 4.25" stroke and 6.535" rod "496CI" stroker combination. The compression ratios and distance below deck will change slightly depending on which stroker combination you are using these pistons with. Click on the part to see our table with detailed compression ratios. In Stock $599.00 5052 Platinum Series Pistons - 4.310 -20 Dished These pistons are a 4.310" (.060 over) bore -20cc DISHED piston which will work in a 383 block with either our 3.75" stroke and 6.76" rod "438CI" stroker combination, or our 4.25" stroke and 6.535" rod "496CI" stroker combination. The compression ratios and distance below deck will change slightly depending on which stroker combination you are using these pistons with. Click on the part to see our table with detailed compression ratios. In Stock $599.00 126-1000 Replacement Spiro-Lox for Platinum Series Pistons .990 Pin Our replacement Spiro-Lox are great for teardowns, replacement, etc. Reusing old spirolox is not recommended. In Stock $24.95

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