5.2 Magnum truck/van
1992–2003 family eraApplication dependent
SMPI replacement for the LA 318 in Dodge truck/van lines
Mopar 5.2 Magnum V8 enginePhoto: Ahanix1989 · Public domain
Mopar · Magnum Small-Block
Mopar 5.2 Magnum V8
The 318 architecture modernized with Magnum heads, EFI and truck-era drivability.
318
Cubic inches
The 5.2 Magnum carried the classic 318's basic dimensions into the EFI era with better-flowing heads and modern engine management.
Key variants
All variants5.2 Magnum truck/van5.2 Magnum Jeep
Displacement
318 ci
Bore
3.91"
Stroke
3.31"
Years
1992–2003 family/application era
Key Takeaway
The 5.2 Magnum carried the classic 318's 3.91-inch bore and 3.31-inch stroke into the EFI era, but paired them with improved Magnum cylinder heads, updated intake architecture, and electronic engine management.
Technical Specifications
- Compression
- Approximately 9.1:1 in representative production specifications
- Horsepower
- Varies by year/application; see documented variants
- Torque
- Approximately 300 lb-ft in representative truck/Jeep applications
- Architecture
- 90-degree OHV V8
- Block
- Cast iron
- Cylinder heads
- Cast iron
- Valvetrain
- Pushrod OHV, 2 valves per cylinder with shaft/rail-guided Magnum valvetrain layout
- Aspiration
- Naturally aspirated
- Fuel delivery
- Sequential/multi-point electronic fuel injection depending application
- Firing order
- 1-8-4-3-6-5-7-2
The 5.2 Magnum carried the classic 318's 3.91-inch bore and 3.31-inch stroke into the EFI era, but paired them with improved Magnum cylinder heads, updated intake architecture, and electronic engine management.
Internal Specifications
Variant-specific values are labeled. Engine families that span multiple years or RPOs can have different heads, cams, induction and rotating parts, so the exact code/year always takes priority.
Identification & Output
- Engine codes / RPO
- ELF (5.2L Magnum MPI/SMPI V8 sales code)
- Casting numbers
- 53006714 / 53006657 (5.2/318 Magnum block references)
- Power rating
- SAE net
- Horsepower RPM
- Approximately 220–230 hp @ 4400 rpm depending application
- Torque RPM
- Approximately 300 lb-ft @ 3200 rpm in representative applications
Operating Specs
- Production notes
- The 5.2 Magnum redesigned the 318 around sequential multi-port injection, Magnum cylinder heads, hydraulic roller lifters and revised valvetrain/oiling while retaining the basic LA-family displacement architecture.
Compatibility Notes
- Magnum heads use different valvetrain/oiling arrangements from earlier LA heads; intake manifolds and accessory drives are also different.
- Verify crank sensor, flexplate/flywheel, PCM, fuel system and transmission strategy when swapping a Magnum into an earlier chassis.
Notable Applications
Dodge RamDodge DakotaDodge DurangoJeep Grand Cherokee
Strengths
- Improved factory cylinder-head airflow over many late LA combinations
- EFI drivability
- Strong truck and SUV donor availability
Weaknesses / Watch-outs
- Intake plenum-pan gasket issues are a known Magnum-era concern
- Magnum accessory, intake and valvetrain details differ from earlier LA engines
Common Upgrades
- Aftermarket or modified intake manifold
- Camshaft and valve-spring upgrade
- Headers and tuning
Racing History & Legacy
The 5.2 Magnum was chiefly a truck, van and SUV production engine rather than a factory race-package centerpiece. Its competition role is mainly grassroots and production-based; when Mopar revived factory Challenger Drag Pak racing for 2009, the documented V8 choices were 5.7 and 6.1 Hemi plus a 5.9 Magnum option.
The 5.2 Magnum was the final major factory evolution of the 318 before Chrysler's modern Hemi era.
References & Image Credit
Engine image: Ahanix1989 · Public domain · source
Stellantis Ram heritage — 5.2L V8 applications
manufacturer history
Stellantis Ram heritage — 1994 Ram 5.2 V8
manufacturer history
Dodge service-manual specification — 5.2L Magnum general engine specifications
service manual reference
MagnumSwap — 5.2/5.9 Magnum block identification
specialist reference
Chrysler StarParts engine sales-code reference
manufacturer reference
DodgeGarage — Challenger Drag Pak history and engine choices
manufacturer motorsport history
Mopar Performance Parts — 2009 Challenger Drag Pak engine assemblies
manufacturer motorsport reference
Key Factory / Build Variants
5.2 Magnum Jeep
1990sApplication dependent
Grand Cherokee V8 applications
Engineering Notes Worth Knowing
01
318 cu in / 5.2 L with 3.91 x 3.31-inch bore and stroke.
02
Cast-iron OHV V8 derived from the LA family.
03
Electronic multi-point/sequential fuel injection depending application.
04
Representative production compression was about 9.1:1, with torque around 300 lb-ft in common truck/Jeep use.
History · context · related reading
The Story Behind Mopar 5.2 Magnum V8
The 5.2 Magnum was Chrysler's way of modernizing the old 318 without abandoning what made it durable. Better heads and EFI gave the familiar small-block architecture a new life in trucks and SUVs.
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