Small Block Mopar Pistons 318 340 360 390 408 Mopar Diamond Racing Pistons
Diamond pistons are available for a wide range of small block Mopar engines, bore sizes, and strokes. Diamond Racing Mopar pistons are all high strength forged pistons. They offer high strength, but at the same time modern technology allows these pistons to be light weight improving engine performance further.
These pistons are far superior to any cast or hypereutectic type piston. Small block Mopar Diamond piston sets offer reduced friction, better ring sealing, faster acceleration, more horsepower and torque in your high performance street, strip or race car engine. We are pleased to offer the entire line of Diamond Pistons to our customers at great discount pricing.
Plymouth Chrysler Mopar Dodge 318, 340, 360, 5.2 Magnum, 5.9 Magnum Diamond Pistons
The tables below include the stock crankshaft stroke that each Diamond piston set is designed to work with. The stock strokes for these Mopar small block engines are as
- 318 3.310"
- 340 3.310"
- 360 3.580"
If you are using a stock stroke crankshaft in your engine project, you will need to select pistons to work with the stock stroke. If you are building a stroker engine using a 4" stroke crankshaft, then you will want to choose the matching 4" stroker pistons. We also have the 4" stroker cranks available as well as rotating assemblies or stroker kits.
If you have any questions about these Diamond small block Mopar pistons please contact us and we will be happy to help.
Diamond Mopar Small Block Piston Set Features
Diamond small block Mopar racing pistons street, strip flat top piston sets feature the following:
- Designed to fit most Mopar OEM open and closed chamber heads
- Will work with aftermarket Edelbrock and Indy heads
- May be used with small nitrous kits
- Standard 1/16 - 1/16 - 3/16 ring package
- Premium 8620 wrist pins and pin locks included
- Valve relief cut for maximum valve diameters of 2.070" intake and 1.625" exhaust
Small Block Mopar 318 5.2L Magnum Flat Top Stroker Pistons
These 318 390 stroker pistons are for use with a 4" stroker crank, they are not for use with a stock stroke 318 crank.
318 390 Stroker Piston Set 5.2L Magnum |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 3.940 | 4.000 stroker | 6.123 | 1.457 | .984x2.750 | -6.8 | 10.9 | 10.3 | 9.8 | 50001 | |
Small Block Mopar 340 416 Pistons- Flat Top
340 Piston Sets Diamond Forged Flat Top Mopar Pistons |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 4.070 | 3.310 stock | 6.123 | 1.802 | 566 | .984x2.750 | -6.8 | 10.4 | 9.8 | 9.3 | 51001 |
| 4.040 | 4.000 stroker | 6.123 | 1.457 | 485 | .984x2.750 | -6.8 | 11.3 | 10.7 | 10.3 | 51005 |
| 4.070 | 4.000 stroker | 6.123 | 1.457 | 512 | .984x2.750 | -6.8 | 12.4 | 11.7 | 11.0 | 51007 |
| 4.070 | 4.000 stroker | 6.123 | 1.457 | 498 | .927x2.750 | -6.8 | 12.4 | 11.7 | 11.0 | 51008 |
| 4.080 | 4.000 stroker | 6.123 | 1.457 | 500 | .927x2.750 | -6.8 | 11.6 | 10.9 | 10.5 | 51009 |
| 4.080 | 4.000 stroker | 6.123 | 1.457 | 514 | .984x2.750 | -6.8 | 11.6 | 10.9 | 10.5 | 51010 |
| 4.100 | 4.000 stroker | 6.123 | 1.457 | 520 | .984x2.750 | -6.8 | 11.7 | 11.0 | 10.6 | 51013 |
Small Block Mopar 360 & 5.9 Magnum 408 Pistons Flat Top
360 Piston Sets Diamond Forged Flat Top Mopar Pistons |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 4.030 | 3.580 stock | 6.123 | 1.667 | 532 | .984x2.750 | -6.8 | 11.1 | 10.5 | 9.9 | 51021 |
| 4.040 | 3.580 stock | 6.123 | 1.667 | 535 | .984x2.750 | -6.8 | 10.3 | 9.7 | 9.2 | 51022 |
| 4.060 | 3.580 stock | 6.123 | 1.667 | 541 | .984x2.750 | -6.8 | 10.5 | 10.0 | 9.5 | 51023 |
| 4.020 | 4.000 stroker | 6.123 | 1.457 | 493 | .984x2.750 | -6.8 | 11.3 | 10.7 | 10.2 | 51025 |
| 4.030 | 4.000 stroker | 6.123 | 1.457 | 495 | .984x2.750 | -6.8 | 12.2 | 11.5 | 10.8 | 51026 |
| 4.030 | 4.000 stroker | 6.123 | 1.457 | 502 | .927x2.750 | -6.8 | 12.2 | 11.5 | 10.8 | 51027 |
| 4.060 | 4.000 stroker | 6.123 | 1.457 | 510 | .984x2.750 | -6.8 | 12.3 | 11.0 | 10.8 | 51028 |
Diamond small block Mopar street, strip dish top pistons feature the following:
- Designed to fit most Mopar OEM open and closed chamber heads
- Will work with aftermarket Edelbrock and Indy heads
- Designed for forced induction applications, turbo charged or super charged
- Standard 1/16 - 1/16 - 3/16 ring package
- Premium 8620 wrist pins included and pin locks included
- Valve relief cut for maximum valve diameters of 2.070" intake and 1.625" exhaust
Small Block Mopar 318 5.2L Magnum Stroker Pistons Dish Top
These 318 pistons are for use with a 4" stroker crank, they are not for use with a stock stroke 318 crank.
318 Piston Set 5.2L Magnum |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 3.940 | 4.000 stroker | 6.123 | 1.457 | .984x2.750 | -16.7 | 10.0 | 9.5 | 9.0 | ||
Small Block Mopar 340 416 Stroker Pistons Dish Top
340 Piston Sets Diamond Forged Dish Top Mopar Pistons |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 4.070 | 4.000 stroker | 6.123 | 1.457 | 525 | .984x2.750 | -21.5 | 10.6 | 10.1 | 9.6 | 51409 |
| 4.070 | 4.000 stroker | 6.123 | 1.457 | 528 | .927x2.750 | -21.5 | 10.6 | 10.1 | 9.6 | 51410 |
| 4.070 | 4.000 stroker | 6.123 | 1.457 | 516 | .984x2.750 | -9.3 | 11.7 | 11.1 | 10.5 | 51411 |
| 4.080 | 4.000 stroker | 6.123 | 1.457 | 528 | .984x2.750 | -21.5 | 10.0 | 9.5 | 9.1 | 51412 |
| 4.080 | 4.000 stroker | 6.123 | 1.457 | 532 | .927x2.750 | -21.5 | 10.0 | 9.5 | 9.1 | 51413 |
| 4.100 | 4.000 stroker | 6.123 | 1.457 | 540 | .984x2.750 | -21.5 | 10.1 | 9.6 | 9.2 | 51416 |
Small Block Mopar 360 & 5.9L Magnum Pistons Dish Top
360 Piston Sets |
Compression Ratio | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bore | Stroke | Rod Length |
C.D. | Wt | Pin | CCs | 60cc | 65cc | 70cc | Part # |
| 4.005 | 3.580 stock | 6.123 | 1.667 | 532 | .984x2.750 | -9.0 | 10.6 | 10.1 | 9.6 | 51400 |
| 4.020 | 3.580 stock | 6.123 | 1.667 | 540 | .984x2.750 | -9.0 | 10.2 | 9.6 | 9.2 | 51420 |
| 4.005 | 4.000 stroker | 6.123 | 1.457 | 498 | .984x2.750 | -19.0 | 10.6 | 10.1 | 9.6 | 51401 |
| 4.005 | 4.000 stroker | 6.123 | 1.457 | 500 | .927x2.750 | -19.0 | 10.6 | 10.1 | 9.6 | 51402 |
| 4.020 | 4.000 stroker | 6.123 | 1.457 | 497 | .984x2.750 | -20.0 | 10.0 | 9.5 | 9.1 | 51403 |
| 4.020 | 4.000 stroker | 6.123 | 1.457 | 505 | .927x2.750 | -20.0 | 10.0 | 9.5 | 9.1 | 51404 |
| 4.030 | 4.000 stroker | 6.123 | 1.457 | 502 | .984x2.750 | -20.0 | 10.6 | 10.1 | 9.6 | 51405 |
| 4.030 | 4.000 stroker | 6.123 | 1.457 | 510 | .927x2.750 | -20.0 | 10.6 | 10.1 | 9.6 | 51406 |
| 4.040 | 4.000 stroker | 6.123 | 1.457 | 505 | .984x2.750 | -20.0 | 10.0 | 9.5 | 9.1 | 51407 |
| 4.060 | 4.000 stroker | 6.123 | 1.457 | 515 | .984x2.750 | -21.5 | 10.6 | 10.1 | 9.6 | 51408 |
Links to related sections of our website:
- Small Block Mopar Connecting Rods K1 Tech
- 318 Stroker Cranks
- 340 Stroker Crankshafts
- 360 Stroker Cranks
- Diamond 426 Hemi Pistons
- Diamond Racing Pistons
- Dodge Plymouth Chrysler Mopar Pistons
- JW Performance Automatic Transmissions & Stall Converters
- Stroker Kits Stroker Engine Kits
- Engine Rebuild Kits Engine Overhaul Kits
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