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.
Mopar 318, 340, 360, 5.2 Magnum, 5.9 Magnum Diamond Pistons
The tables below include the crankshaft stroke that each Diamond piston
set is designed to work with. The stock strokes for these Mopar small block engines are as
follows:
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 Mopar pistons, please e-mail us and we will be happy to help.
Click on the part number in the tables below for pricing or to order using our secure online shopping cart
system.
Diamond Mopar Small Block Piston Set Features
All Diamond Racing pistons for small block Mopar 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 Stroker Pistons
Flat Top
These 318 stroker pistons are for use with a 4" stroker crank, they are not for
use with a stock stroke 318 crank.
318 Stroker Piston Set 5.2L Magnum
Diamond Forged FT Mopar Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 50001 |
3.940 |
4.000 |
6.123 |
1.457 |
|
.984x2.750 |
-6.8 |
10.9 |
10.3 |
9.8 |
Small Block Mopar 340 Pistons- Flat Top
340 Piston Sets Diamond Forged Flat Top Mopar
Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 51001 |
4.070 |
3.310 |
6.123 |
1.802 |
566 |
.984x2.750 |
-6.8 |
10.4 |
9.8 |
9.3 |
| 51005 |
4.040 |
4.000 |
6.123 |
1.457 |
485 |
.984x2.750 |
-6.8 |
11.3 |
10.7 |
10.3 |
| 51007 |
4.070 |
4.000 |
6.123 |
1.457 |
512 |
.984x2.750 |
-6.8 |
12.4 |
11.7 |
11.0 |
| 51008 |
4.070 |
4.000 |
6.123 |
1.457 |
498 |
.927x2.750 |
-6.8 |
12.4 |
11.7 |
11.0 |
| 51009 |
4.080 |
4.000 |
6.123 |
1.457 |
500 |
.927x2.750 |
-6.8 |
11.6 |
10.9 |
10.5 |
| 51010 |
4.080 |
4.000 |
6.123 |
1.457 |
514 |
.984x2.750 |
-6.8 |
11.6 |
10.9 |
10.5 |
| 51013 |
4.100 |
4.000 |
6.123 |
1.457 |
520 |
.984x2.750 |
-6.8 |
11.7 |
11.0 |
10.6 |
Small Block Mopar 360 & 5.9 Magnum Pistons-
Flat Top
360 Piston Sets Diamond Forged Flat Top Mopar
Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 51021 |
4.030 |
3.580 |
6.123 |
1.667 |
532 |
.984x2.750 |
-6.8 |
11.1 |
10.5 |
9.9 |
| 51022 |
4.040 |
3.580 |
6.123 |
1.667 |
535 |
.984x2.750 |
-6.8 |
10.3 |
9.7 |
9.2 |
| 51023 |
4.060 |
3.580 |
6.123 |
1.667 |
541 |
.984x2.750 |
-6.8 |
10.5 |
10.0 |
9.5 |
| 51025 |
4.020 |
4.000 |
6.123 |
1.457 |
493 |
.984x2.750 |
-6.8 |
11.3 |
10.7 |
10.2 |
| 51026 |
4.030 |
4.000 |
6.123 |
1.457 |
495 |
.984x2.750 |
-6.8 |
12.2 |
11.5 |
10.8 |
| 51027 |
4.030 |
4.000 |
6.123 |
1.457 |
502 |
.927x2.750 |
-6.8 |
12.2 |
11.5 |
10.8 |
| 51028 |
4.060 |
4.000 |
6.123 |
1.457 |
510 |
.984x2.750 |
-6.8 |
12.3 |
11.0 |
10.8 |
All 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
Diamond Forged Dish Mopar Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 50010 |
3.940 |
4.000 |
6.123 |
1.457 |
|
.984x2.750 |
-16.7 |
10.0 |
9.5 |
9.0 |
Small Block Mopar 340 Pistons Dish Top
340 Piston Sets Diamond Forged Dish Top Mopar
Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 51409 |
4.070 |
4.000 |
6.123 |
1.457 |
525 |
.984x2.750 |
-21.5 |
10.6 |
10.1 |
9.6 |
| 51410 |
4.070 |
4.000 |
6.123 |
1.457 |
528 |
.927x2.750 |
-21.5 |
10.6 |
10.1 |
9.6 |
| 51411 |
4.070 |
4.000 |
6.123 |
1.457 |
516 |
.984x2.750 |
-9.3 |
11.7 |
11.1 |
10.5 |
| 51412 |
4.080 |
4.000 |
6.123 |
1.457 |
528 |
.984x2.750 |
-21.5 |
10.0 |
9.5 |
9.1 |
| 51413 |
4.080 |
4.000 |
6.123 |
1.457 |
532 |
.927x2.750 |
-21.5 |
10.0 |
9.5 |
9.1 |
| 51416 |
4.100 |
4.000 |
6.123 |
1.457 |
540 |
.984x2.750 |
-21.5 |
10.1 |
9.6 |
9.2 |
Small Block Mopar 360 & 5.9L Magnum Pistons
Dish Top
360 Piston Sets
Diamond Forged Dish Top Mopar 5.9 Pistons |
|
Compression Ratio |
| Part # |
Bore |
Stroke |
Rod
Length |
C.D. |
Wt |
Pin |
CCs |
60cc |
65cc |
70cc |
| 51400 |
4.005 |
3.580 |
6.123 |
1.667 |
532 |
.984x2.750 |
-9.0 |
10.6 |
10.1 |
9.6 |
| 51420 |
4.020 |
3.580 |
6.123 |
1.667 |
540 |
.984x2.750 |
-9.0 |
10.2 |
9.6 |
9.2 |
| 51401 |
4.005 |
4.000 |
6.123 |
1.457 |
498 |
.984x2.750 |
-19.0 |
10.6 |
10.1 |
9.6 |
| 51402 |
4.005 |
4.000 |
6.123 |
1.457 |
500 |
.927x2.750 |
-19.0 |
10.6 |
10.1 |
9.6 |
| 51403 |
4.020 |
4.000 |
6.123 |
1.457 |
497 |
.984x2.750 |
-20.0 |
10.0 |
9.5 |
9.1 |
| 51404 |
4.020 |
4.000 |
6.123 |
1.457 |
505 |
.927x2.750 |
-20.0 |
10.0 |
9.5 |
9.1 |
| 51405
|
4.030 |
4.000 |
6.123 |
1.457 |
502 |
.984x2.750 |
-20.0 |
10.6 |
10.1 |
9.6 |
| 51406
|
4.030 |
4.000 |
6.123 |
1.457 |
510 |
.927x2.750 |
-20.0 |
10.6 |
10.1 |
9.6 |
| 51407 |
4.040 |
4.000 |
6.123 |
1.457 |
505 |
.984x2.750 |
-20.0 |
10.0 |
9.5 |
9.1 |
| 51408
|
4.060 |
4.000 |
6.123 |
1.457 |
515 |
.984x2.750 |
-21.5 |
10.6 |
10.1 |
9.6 |
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