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Diamond Pistons

Ford FE Big Block
390 Street/Strip - Flat / Dish Top
Piston

• Will fit OEM Iron heads (390 - 428) or Edelbrock Aluminum head.
• Can be used with small nitrous kits. 4032 alloy.
• Ratios figured for .011” - .015” deck@10.170”.
• Standard 1/16” x 1/16” x 3/16” ring package.
• Premium 8620 pins included.
• Gasket volume = 10.1cc’s.
• Top ring down = .275”.
• Valve relief depth = dual symmetric .225” deep.
• Some items are non-stock parts, made to order as necessary. See the shopping cart for availability.

390 Street / Strip Flat Top
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
72cc 70cc 68cc
9.7
9.8
9.8
9.9

10.0
10.0
10.0
10.1

10.1
10.2
10.2
10.3

41001
$656
4.070
4.080
4.090
4.100
3.784
6.490
1.775
580
582
585
590
.975
-6.0
41005
$656
4.070
4.080
4.090
4.100
3.984
6.490
1.675
558
562
567
570
.975
-6.0
10.2
10.4
10.5
10.5

10.4
10.4
10.5
10.5

10.6
10.7
10.7
10.7
41010
$656
4.070
4.080
4.090
4.100
3.784
6.490
1.775
585
587
560
595
.990
-6.0
9.7
9.8
9.8
9.9

10.0
10.0
10.0
10.1

10.1
10.2
10.2
10.3
41014
$656
4.070
4.080
4.090
4.100
3.984
6.490
1.675
563
567
572
575
.990
-6.0
10.2
10.2
10.3
10.3

10.4
10.4
10.5
10.5

10.6
10.7
10.7
10.7
41020
$656
4.070
4.080
4.090
4.100
4.125
6.700
1.392
500
506
511
516
.990
-6.0
10.5
10.6
10.6
10.7

10.7
10.8
10.8
10.9

11.0
11.0
11.0
11.1
41030
$656
4.070
4.080
4.090
4.100
4.250
6.700
1.330
490
493
495
500
.990
-6.0
10.8
10.9
10.9
11.0

11.0
11.1
11.1
11.2

11.3
11.3
11.4
11.4

 

 

390 Street / Strip Dish Top
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
72cc 70cc 68cc
9.7
9.8
9.8
9.8
9.9
10.0
10.0
10.0
10.1
10.1
10.2
10.2
42001
$695
4.070
4.080
4.090
4.100
3.984
6.490
1.675
571
579
584
590
.975
-11.0
42002
$695
4.070
4.080
4.090
4.100
3.984
6.490
1.675
575
580
586
592
.990
-11.0
9.7
9.8
9.8
9.8
9.9
10.0
10.0
10.0
10.1
10.1
10.2
10.2
42010
$695
4.070
4.080
4.090
4.100
4.125
6.700
1.392

520
525
563
536

.990
-14.0
9.8
9.8
9.8
9.9
9.9
10.0
10.0
10.1

10.1
10.2
10.2
10.3

42020
$695
4.070
4.080
4.090
4.100
4.250
6.700
1.330
506
510
514
519
.990
-17.0
9.8
9.8
9.9
9.9
9.9
10.0
10.0
10.1
10.1
10.2
10.2
10.3


 
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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