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![3-6400-4000 FX-Series Flat Top Piston Set for 1971-1993 Small Block Mopar, 4 in. Bore, -3cc Volume [Stroker]](https://www.jegs.com/images/mini_750/900/915/915-3-6400-4000.jpg)
Vehicle Info NeededDSS RACINGPART NUMBER: 915-3-6400-4000
3-6400-4000 FX-Series Flat Top Piston Set for 1971-1993 Small Block Mopar, 4 in. Bore, -3cc Volume [Stroker]
$95995
Ships on 09/14/2026
Lowest Price GuaranteeMopar Small Block
FX-Series Flat Top Piston Set1971-1993 Small Block Mopar Bore: 4.000 in. Head Volume: -3cc Material: Forged 2619 Pin Diameter: .984 in. Pin Style: Press or Full Floating Ring Thickness: 1/16-1/16-3/16 in. Stroker Set of 8
DSS Racing 3-6400-4000 Features:
- Strong, Heat Resistant 2618 Alloy
- Proprietary "DMAX" Multi Stage Forging Process, Produces' a Superior Forging
- Patented "X Groove" Skirt for Superior Cylinder & Ring Performance & Durability
- Advanced Ring Lands Featuring a Combination of Accumulators and Drilling Ops.
- Ten top Land Horizontal Gas Ports For the Ultimate In Ring seal and Performance
- 6 additional areas of CNC milling for weight reduction in non critical areas.
- Thinner Ring Grooves Maximize Critical Ring Land Strength
- Larger CNC Machined Valve Reliefs for More Aggressive Head & Cam Combinations
- DSS XR Heavy Wall Piston Pins
- Precision CNC Finished Pin Bores
- Double Spiro lock Pin Locks, Provide Redundancy
- Drilled Forced Wrist Pin Oiling
- Drilled Bottom Ring Land Intersecting Oil Drain Backs
- Advanced Profile Precision Diamond-Turned Skirts
- Ring Set Required: RS-DM400-4000
- Ring Series: DM400
- Fits Base Engine: 410
- Compression Ratio: 62cc-12.24, 64cc-11.95, 72cc-10.89
- Calculated Zero Deck: 9.58
- Compression Height: 1.457 in.
- Rod Length: 6.123 in.
- Stroke: 4 in. (Stroker)
- Pin Locking Rings Included: Yes
- Wrist Pin Included: Yes
- Oil Rail Support Ring Included: N/A
- With Rings Without Rings: Without Rings
- Total Valve Reliefs: 2
Part TypePiston
BrandDSS RACING
Package Height7.0
Package Width8.5
Package Length8.5
Weight16.0 PG
Part CategoryPerformance Parts
Pin Lock Rings IncludedYes
Compression Height (In)1.457
Bore (In)4
Wrist Pin StylePress or Full Floating
QuantitySet of 8
Piston Head Volume-3cc
Piston StyleFlat Top
Compression Ratio62cc-12.24, 64cc-11.95, 72cc-10.89
Ring Thickness1/16-1/16-3/16"
Piston MaterialForged 2619
Pin Diameter (In)0.984
Part FitmentSemi Universal
Wrist Pin IncludedYes
Snap Rings IncludedYes
Vendor Part Number3-6400-4000
Package Qty1
Package TypeEA
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