ROSS Racing 340 piston sets are used in muscle car restorations, high performance and racing engines by serious engine builders the world over. Available here are Plymouth Mopar Dodge 340 forged pistons manufactured by Ross Racing Pistons. The small block Mopar 340 has always been known as a high performance engine. On the street, drag strip, oval track and road racing circuits it has a winning tradition.Ross forged racing pistons are a great choice for cruising or high rpm racing applications.
Ross Racing Pistons 340 pistons combine light weight, high strength, precision machining and premium materials. You can depend on Ross forged 340 piston sets for high horsepower, torque and reliability. We offer these superb 340 forged pistons at very affordable prices for stock stroke applications as well as Mopar 340 416 stroker pistons. Buy the best Ross pistons here. We offer great discount pricing, knowledgeable tech assistance and fast shipping.
Ross Racing Pistons offers 340 pistons in both stocking and custom sets. If you do not see the exact piston specs you want in a stocking piston, we will be happy to help you with a custom 340 piston design. Custom 340 pistons can be made for just about any application. Please contact us and we will be happy to assist you. We offer discounted pricing, even on custom pistons.
ROSS 340 piston sets are balanced to plus or minus 2.5 grams throughout the set. The valve pockets are designed to handle most aggressive camshaft applications up to .650 lift. The performance skirt design allows the pistons to work properly under intense heat and tremendous side loads without scuffing or splitting cylinder walls. Most normally aspirated pistons are designed to operate at just .004 piston skirt to cylinder wall clearance. These 340 pistons are available in flat top, dome top and dish top models.
Ross Chrysler Plymouth Dodge 340 Pistons and 340 416 Stroker PistonsRoss 340 piston sets include:
Additional features, specifications and application notes:
Piston Rings are premium plasma moly and the part number listed is for one complete set of rings for one 8 cylinder engine. |
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Bore | Stroke | Rod Length | Disp | C.R. | Wt. | C.H. | Pin Dia. | Piston Rings | Piston Set | ||
4.070 + .030 | 3.310 | 6.123 | -5 | 9.8 flat top |
514 | 1.804 | 0.984 | ross RS-9771-75
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ross 99625
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4.070 + .030 | 3.310 | 6.123 | 12.6 | 12.5 dome top |
560 | 1.804 | 0.984 | ross 99626
Use only with Mopar OEM chamber type cylinder heads |
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Ross Racing Pistons Mopar 340 416 Stroker PistonsUsing the below listed pistons with a 4 inch stroker crank builds an engine with a finished size of 416 cubic inches. We strongly recommend the use of the K1 Tech 4340 forged 340 stroker cranks listed here |
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4.070 + .030 | 4.000 | 6.123 | -21 | 9.5 dish top | 495 | 1.459 | 0.984 | ross RS-9771-75
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ross 99786
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4.070 + .030 | 4.000 | 6.123 | 4.2 | 13.1 dome top |
497 | 1.459 | 0.984 | ross 99788
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Please feel free to use our compression ratio calculator to help you decide on the piston specifications you want. Click here to use our compression ratio calculator
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