High performance KB Chrysler 440 pistons offer a significant performance improvement for your engine, at a very affordable price. We have these piston sets available in a wide range of sizes including standard bore and many popular oversizes. If you are rebuilding a Chrysler, Plymouth, Mopar, Dodge 440 engine and are looking for improved performance, without the higher cost of forged pistons, KB performance pistons are an excellent alternative for many street, muscle car restoration, cruising and street / strip applications.
For reference the original stock specifications were:
We do not recommend hypereutectic pistons for use with superchargers, turbochargers, nitrous systems or for serious racing engines. For those applications we strongly recommend forged pistons. Our complete piston index list for stock replacement, cast, hypereutectic and forged pistons is available here: CE Engine Pistons Index
KB 440 Pistons for use in Chrysler Dodge Plymouth Mopar 440 Engines
What is Included?
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Mopar 440 Pistons Flat Top with Step Head KB184 NOTES: Compression height of this piston is 1.992" .140" quench dome. Suggest checking quench dome with clay for clearance. Centered pin. Closed chamber heads require the quench dome to be machined down. |
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CH | Wt | ccs | CR with head chamber of: | Bore Size | Piston Set | Piston and Ring Kit | ||||
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72cc | 80cc | 84cc | 88cc | |||||||
1.992 |
765 / 190 |
3.5 |
10.4 |
9.7 |
9.3 |
8.9 |
4.320 standard | KB184 | KB184 KTM
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4.340 + .020 over | KB184 20 | KB184 KTM20
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4.350 + .030 over | KB184 30 | KB184 KTM30
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4.360 + .040 over | KB184 40 | KB184 KTM40
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4.380 + .060 over | KB184 60 | KB184 KTM60
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Chrysler 440 Flat Top with Step Head |
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![]() KB236 NOTES: Compression height of this piston is 2.057". .075" quench dome, centered pin. Suggest checking quench dome with clay clearance. Closed chamber heads require quench dome to be machined down. |
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CH | Wt | ccs | CR with head chamber of: |
Bore Size | Piston Set | Piston and Ring Kit | ||||
72cc | 80cc | 84cc | 88cc | |||||||
2.057 |
775 / 190 |
-4.8 |
11.5 |
10.7 |
10.3 |
9.9 |
4.320 standard | KB236 | KB236 KTM
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4.340 + .020 over | KB236 20 | KB236 KTM20
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4.350 + .030 over | KB236 30 | KB236 KTM30
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4.360 + .040 over | KB236 40 | KB236 KTM40
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4.380 + .060 over | KB236 60 | KB236 KTM60
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Chrysler Plymouth Dodge 440 Flat Top | ||||||||||
![]() KB237 NOTES: Centered pin. |
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CH | Wt | ccs | CR with head chamber of: | Bore Size | Piston Set | Piston and Ring Kit | ||||
72cc | 80cc | 84cc | 88cc | |||||||
2.067 |
770 / 190 |
-8cc |
11.2 |
10.3 |
10.0 |
9.6 |
4.320 standard | KB237 | KB237 KTM
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4.340 + .020 over | KB237 20 | KB237 KTM20
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4.350 + .030 over | KB237 30 | KB237 KTM30
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4.360 + .040 over | KB237 40 | KB237 KTM40
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4.380 + .060 over | KB237 60 | KB237 KTM60
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While you are replacing your engine pistons it is a good time to also upgrade your rotating assembly by installing modern connecting rods. Why risk damage to your rebuilt performance engine by using old stock connecting rods that have been through who knows what kind of abuse.
With the high cost of machine shop service these days you can often upgrade to far stronger modern rods for not much more than the cost of reconditioning a set of stock rods.
Molnar Technologies H Beam 440 Connecting RodsMolnar Technologies H Beam rods are machined from billet 4340 steel, and then heat treated to provide improved strength. To make the rods even stronger, they are shot peened to which also increases fatigue life. All Molnar connecting rods are fitted with highly durable premium bronze bushings for use with floating pin type pistons. Each rod set includes ARP fasteners, moly lubricant and installation guidelines. All Molnar rods are finished in the United States at the Molnar Technologies shop in Michigan. Critical rod dimensions are are held to very precise tolerances of +/- .0001 of an inch, which is the tightest tolerance you will find in the performance and racing aftermarket.
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Description and Length | Weight | Bolt Size | Rod Pin Size | Pin Size | BE Width | PE Width | Part Number | |
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6.760 long 440 Mopar RB | 852 | 7/16 | 2.375 | 1.094 | 1.017 | 1.140 | DH6760YYB8-A
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