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Diamond Pistons

Ford Small Block
Twisted Wedge - Dish Top
Piston

• Designed to fit the TFS T/W & T/W “R” Head.
• Designed for forced induction or small nitrous applications. 2618 alloy.
• Ratios figured for “0” deck height.
• Standard 1/16” x 1/16” x 3/16” ring package.
• Premium 8620 wrist pins included.
• Gasket volume = 8.8cc’s.
• Top ring down = .245” - .260”.
• Designed for 2.080” diameter intake valves & 1.600” exhaust valves.
• Valve relief depths =.177” intake and .140” exhaust.
• Some items are non-stock parts, made to order as necessary. Check the shopping cart for availability.

302 Block - 8.190" Deck Height
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
58cc 62cc 66cc
8.9
9.0
9.0
9.3

8.5
8.6
8.6
8.9

8.2
8.2
8.3
8.5
31501
$689
4.030
4.040
4.060
4.125
3.000
5.090
1.600
535
-
-
-
.912
-11.0
31506*
$718
4.030
4.040
4.060
4.125
3.250
5.400
1.165
455
-
-
-
.927
-20.0
8.7
8.8
8.9
9.1

8.4
8.4
8.5
8.7

8.1
8.1
8.2
8.4
31511*
$718
4.030
4.040
4.060
4.125
3.400
5.400
1.090
430
-
-
-
.927
-24.5
8.7
8.7
8.8
9.0

8.4
8.4
8.5
8.7

8.1
8.1
8.2
8.4

 

351 Windsor Block - 9.470" Deck Height
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
58cc 62cc 66cc
8.7
8.7
8.8
9.0

8.4
8.4
8.5
8.7

8.1
8.1
8.2
8.4
31516
$689
4.030
4.040
4.060
4.125
3.500
5.956
1.764
574
-
-
-
.912
-27.0
31521
$689
4.030
4.040
4.060
4.125
3.850
6.200
1.345
492
-
-
-
.927
-37.0
8.7
8.7
8.8
9.0

8.4
8.4
8.5
8.7

8.1
8.1
8.2
8.4
31526
$689
4.030
4.040
4.060
4.125
4.000
6.200
1.270
432
-
-
-
.927
-41.0
8.7
8.7
8.8
9.0

8.4
8.4
8.5
8.7

8.1
8.2
8.2
8.5
31530
$689
4.030
4.040
4.060
4.125
4.000
6.200
1.270
454
-
-
-
.927
-27.0
9.8
9.9
9.9
10.2

9.4
9.5
9.6
9.8

9.1
9.2
9.2
9.5
31540
$718
4.030
4.040
4.060
4.125
4.000
6.200
1.295
-
.927
-41.0
8.7
8.7
8.8
9.0

8.4
8.4
8.5
8.7

8.1
8.2
8.2
8.5
31545
$718
4.030
4.040
4.060
4.125
4.000
6.200
1.295
-
.927
-27.0
9.8
9.9
9.9
10.2

9.4
9.5
9.6
9.8

9.1
9.2
9.2
9.5

 

351 Windsor Block - 9.470" Deck Height
Part #
Bore
Stroke
Rod
C. D.
Wt
Pin
CC's
Comp Ratio
Purchase Online
58cc 62cc 66cc
9.8
9.9
9.9
10.2

9.4
9.5
9.6
9.8

9.1
9.2
9.2
9.5
31534*
$718
4.030
4.040
4.060
4.125
4.000
6.250
1.250
-
.927
-27.0

 

* 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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