Pistons for 383 Blocks-store.440source.com

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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. 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.

In Stock

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. 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.

In Stock

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. 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.

In Stock

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. 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.

In Stock

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

5040R

Single 5040 Piston - Right Exhaust
We also sell single pistons for service replacement purposes. Includes pin and locks. Left hand exhaust pistons are used in cylinders #1, 5, 4, and 8. Right hand exhaust pistons are used in cylinders #2, 6, 3, and 7.

In Stock

5050L

Single 5050 Piston - Left Exhaust
We also sell single pistons for service replacement purposes. Includes pin and locks. Left hand exhaust pistons are used in cylinders #1, 5, 4, and 8. Right hand exhaust pistons are used in cylinders #2, 6, 3, and 7.

In Stock

5043

Platinum Series Pistons - 4.280 -12 Dished
These pistons are a 4.280" (.030 over) bore -12cc 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. 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.

In Stock

5053

Platinum Series Pistons - 4.310 -12 Dished
These pistons are a 4.310" (.060 over) bore -12cc 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. 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.

In Stock

Platinum Series Pistons - 4.280 -4 FT

In Stock

Platinum Series Pistons - 4.310 -4 FT

In Stock

Platinum Series Pistons - 4.280 -20 Dished

In Stock

Platinum Series Pistons - 4.310 -20 Dished

In Stock

Replacement Spiro-Lox for Platinum Series Pistons .990 Pin

In Stock

Single 5040 Piston - Right Exhaust

In Stock

Single 5050 Piston - Left Exhaust

In Stock

Platinum Series Pistons - 4.280 -12 Dished

In Stock

Platinum Series Pistons - 4.310 -12 Dished

In Stock