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Diamond Pistons

Big Block Mopar
Street / Strip Dish Top
Piston

• Designed to fi t most OEM open and closed chamber heads
• Can be used with forced induction or small nitrous kits
• Ratios fi gured for .017” deck@9.980” (400)
• Ratios fi gured for .012” deck@10.720” (440)
• Standard 1/16” x 1/16” x 3/16” ring package
• Premium 8620 wrist pins included
• Gasket volume = 9.9cc’s
• Top ring down = .240”
• Max valve diameters = 2.250” diameter intake & 1.850” exhaust valves
• Valve relief depth = .197” symmetric pockets.
• Some items are non-stock parts, made to order as necessary. Check the shopping cart for availability.

Big Block Mopar 400: 9.980” Block Height
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
72cc 80cc 84cc
10.3

9.6

9.3
52406
$695
4.375
3.750
6.768
1.320
530
1.094
-12.5
52407
$695
4.375
3.750
6.768
1.320
537
.990
-12.5

10.3

9.6

9.3

 

Big Block Mopar 440: 10.720” Block Height
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
72cc 80cc 84cc
10.3

9.6

9.3
52401
$695
4.350
3.750
6.768
2.065
667
1.094
-13.0
52402
$695
4.350
3.750
6.768
2.065
668
.990
-13.0

10.3

9.6

9.3
52415
$695
4.350
4.360
4.150
6.768
1.865
635
646
.990
-13.0

11.2
11.3

10.5
10.5

10.1
10.1
52416
$695
4.350
4.150
6.768
1.865
630
1.094
-13.0

11.2

10.5

10.0
52421
$695
4.350
4.150
6.768
1.865
642
1.094
-24.0

10.3

9.6

9.3
52411
$695
4.350
3.900
7.100
1.658
598
.990
-16.5

10.3

9.6

9.3
52424
$695
4.350
4.360
4.375
4.380
4.250
6.768
1.815
658
659
661
664
.990
-24.0

10.4
10.4
10.5
10.5

9.8
9.8
9.9
9.9

9.5
9.5
9.6
9.6
52425
$695
4.350
4.375
4.250
6.768
1.815
656
662
1.094
-24.0

10.4
10.5

9.8
9.9

9.5
9.6
52437
$695
4.350
4.360
4.380
4.250
6.800
1.780
-
.990
-24.0

10.4
10.4
10.5

9.8
9.8
9.9

9.5
9.5
9.6

* Includes Oil ring support rails.


 
Call 1-877-354-3812
to order your Parts Today!

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About RPM Machine | Specials | Newsletter
RPM Machine-Performance Auto Parts
146 Ea 13065 So Suite F
Draper Utah 84020
We carry parts from scat, je, wiseco, ross, crower, callies, eagle, cat, eagle
Most of our rotating assemblies include forged pistons
and 4340 steelcranks


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