440 Pistons Probe SRS Mopar Dodge Plymouth Chrysler 440 Forged Pistons and 496 Stroker Pistons
Probe 440 forged pistons for big block Mopar 440 stock stroke and 440 stroker engines are
a modern high performance design. Advances in CNC machine capability and the utilization
of a "clean sheet of paper" method of manufacturing design has allowed Probe to
create a high performance and racing 440 forged piston line that is arguably a work of art. Probe's method of machining
wrist pin bores provides the most accurate pin bore possible.
Probe Forged Mopar
440 Pistons also feature the latest design innovations in ring land technology.
The top ring land features radial anti-detonation grooves. These grooves knock the peaks
off shock waves within the cylinder, reducing the propensity to detonate. The second ring
land features our pressure equalization channel, which is a shaped channel that works by
equalizing the pressure seen between the top and second ring with the pressure in the
combustion chamber. This feature enhances ring seal, improving power, engine life and fuel
economy. The Mopar 440 and 496 stroker pistons listed below all incorporate the
advanced Probe Industries technology. More tech info here
Probe Sportsman Race Series 440 Mopar Pistons
Probe Industries SRS 440 Forged Pistons are designed for performance and race applications where
a strong, lightweight forged piston is an advantage. These full-featured pistons are
extremely popular for use in street, strip, muscle cars, hot rods, street rods and
most racing combinations.
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Forged of 2618 t-61 Aluminum alloy for the ultimate strength and fatigue resistance.
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Light weight forging designs for quick revs and power.
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Tight piston to wall clearance design for better ring seal and less noise.
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Fully CNC machined domes and valve reliefs for perfect fit.
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Radial Anti Detonation Grooves reduce detonation by clipping pressure spikes.
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Pressure Equalization Channel enhances ring seal, providing more power and better fuel
economy.
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Full floated lightweight wrist pins and double spiro locks for durability.
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Narrow piston rings for the ultimate in power.
Probe Mopar big block 440 forged piston sets include 8 pistons, pins, pin
fitting and spiro locks.
Probe Industries Mopar 440 Flat Top Pistons Standard
Stroke |
| Compression Ratio computed with .010 deck and .038 head
gasket Pistons use 1/16",
1/16", 3/16" Ring Grooves, 3.75" is the stock 440 stroke length, std. bore
is 4.320" |
Compression Ratio with head chamber of: (weights and compression ratios are approximate) |
|
|
|
| Part Number |
Bore Size |
Crank Stroke |
Rod Length |
Comp
Height |
cc's |
72cc |
80cc |
84cc |
86cc |
Wt. |
Pin Dia. |
| 12498-030 |
4.350 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.35 |
10.49 |
10.11 |
9.93 |
730 |
1.094 |
| 12498-040 |
4.360 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.39 |
10.53 |
10.15 |
9.97 |
732 |
1.094 |
| 12498-060 |
4.380 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.47 |
10.61 |
10.22 |
10.04 |
742 |
1.094 |
| 14790-030 |
4.350 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.35 |
10.49 |
10.11 |
9.93 |
664 |
.990 |
| 14790-040 |
4.360 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.39 |
10.53 |
10.15 |
9.97 |
676 |
.990 |
| 14790-060 |
4.380 |
3.750 |
6.768 |
2.065 |
-4.0 |
11.47 |
10.61 |
10.22 |
10.04 |
683 |
.990 |
Probe Plymouth Chrysler Mopar Dodge 440 based 496 Stroker Flat Top Pistons |
| 12233-030 |
4.350 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.46 |
11.50 |
11.08 |
10.89 |
646 |
1.094 |
| 12233-040 |
4.360 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.50 |
11.55 |
11.12 |
10.93 |
656 |
1.094 |
| 12233-060 |
4.380 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.59 |
11.63 |
11.21 |
11.01 |
663 |
1.094 |
| 14778-030 |
4.350 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.46 |
11.50 |
11.08 |
10.89 |
635 |
.990 |
| 14778-040 |
4.360 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.50 |
11.55 |
11.12 |
10.93 |
646 |
.990 |
| 14778-060 |
4.380 |
4.150 |
6.768 |
1.865 |
-4.0 |
12.59 |
11.63 |
11.21 |
11.01 |
655 |
.990 |
Probe Mopar 440 Dish Top Pistons Standard Stroke |
| Part Number |
Bore Size |
Crank Stroke |
Rod Length |
Comp
Height |
cc's |
72cc |
80cc |
84cc |
86cc |
Gram
Wt. |
Pin Dia. |
| 12499-030 |
4.350 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.49 |
9.76 |
9.44 |
9.29 |
687 |
1.094 |
| 12499-040 |
4.360 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.53 |
9.80 |
9.47 |
9.32 |
697 |
1.094 |
| 12499-060 |
4.380 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.61 |
9.87 |
9.54 |
9.39 |
704 |
1.094 |
| 14797-030 |
4.350 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.49 |
9.76 |
9.44 |
9.29 |
688 |
.990 |
| 14797-040 |
4.360 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.53 |
9.80 |
9.47 |
9.32 |
703 |
.990 |
| 14797-060 |
4.380 |
3.750 |
6.768 |
2.065 |
-12.0 |
10.61 |
9.87 |
9.54 |
9.39 |
714 |
.990 |
Probe 440 Mopar Stroker Dish Top Pistons 4.15 in. Stroker 496 Pistons |
| 12232-030 |
4.350 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.85 |
9.27 |
9.01 |
8.88 |
610 |
1.094 |
| 12232-040 |
4.360 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.88 |
9.30 |
9.04 |
8.91 |
612 |
1.094 |
| 12232-060 |
4.380 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.96 |
9.37 |
9.11 |
8.98 |
614 |
1.094 |
| 14788-030 |
4.350 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.85 |
9.27 |
9.01 |
8.88 |
667 |
.990 |
| 14788-040 |
4.360 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.88 |
9.30 |
9.04 |
8.91 |
678 |
.990 |
| 14788-060 |
4.380 |
4.150 |
6.768 |
1.865 |
-30.0 |
9.96 |
9.37 |
9.11 |
8.98 |
690 |
.990 |
In the past all pistons featured cam ground piston skirts to achieve the shape required to
work in an engine. As with most things computer technology has provided us with the
ability to improve upon this technique. Probe Industries Racing is the recipient the
newest CNC technology available to achieve the most accurate piston skirt designs and
finishes in the industry. Further a complete "rethink" of the tooling and
fixtures have allowed Probe to eliminate the variations caused by multiple setups. This
all adds up to a better performing, stronger 440 Mopar piston at a reasonable price.
High Performance and Racing Big Block Mopar Books
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