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Engine Dimensions & Weights

The dimension tables below, organized by engine family, list the nominal length, width, height, and weight of common engine models. Note that dimensions may vary due to model year changes and optional equipment, including single alternator vs dual alternator versions. Measuring an engine within an engine bay is not an exact science, but these dimensions will give you a general idea and good starting point in planning your engine swap or diesel conversion.

Power Stroke Diesel Engine Dimensions

Engine Length Width Height Weight
7.3 Power Stroke V-8 34.0 inches 32.0 inches 36.0 inches 920 lbs (dry)
6.0 Power Stroke V-8 35.0 inches 38.3 inches 40.7 inches 966 lbs (w/ oil)
6.4 Power Stroke V-8 32.0 inches 34.0 inches 38.0 inches 1,130 lbs (w/ oil)
6.7 Power Stroke V-8 44.4 inches 33.3 inches 33.7 inches 1,100 lbs (w/ oil)
3.2 Power Stroke I-5 --- --- --- 514 lbs (w/ oil)
3.0 Power Stroke V-6 34.7 inches 30.0 inches 27.9 inches 501 lbs (w/ oil)

Cummins Diesel Engine Dimensions

Engine Length Width Height Weight
5.9 Cummins 6BT I-6 34.75 inches [1] 24.9 inches 37.9 inches 975 lbs (w/oil)
5.9 Cummins ISB I-6 1,100 lbs (w/ oil)
6.7 Cummins ISB I-6 41.7 inches 28.6 inches 37.8 inches 1,150 lbs (dry)
3.9 Cummins 4BT I-4 [2] 30.6 inches 24.6 inches 37.7 inches 745 - 782 lbs (dry)
4.5 Cummins QSB I-4 32.2 inches 28.1 inches 34.5 inches 818 lbs (w/ oil)
2.8 Cummins R2.8 I-4 25.1 inches 25.0 inches 28.0 inches 503 lbs (w/ oil)
5.0 Cummins ISV V-8 --- --- --- 899 lbs (dry)

[1] - Length measured from rear of engine block to front engine mount; this length is approximately 0.5 inches longer than that measured from the rear of the engine block to the front of the cooling fan.
[2] - Dimensions and weights vary slightly with application type and related accessory equipment; models designated for vehicle applications may differ than those intended for machinery applications.

Duramax Diesel Engine Dimensions

Engine Length Width Height Weight
6.6 Duramax V-8 (all gens) 30.0 inches 30.0 inches 32.0 inches 835 lbs (dry)
2.8 Duramax I-4 25.4 inches 25.8 inches 34.1 inches 520 lbs
3.0 Duramax I-6 35.75 inches 35.98 inches 35.55 inches 467 lbs

Additional Engines | Ford IDI, GM 6.2/6.5, EcoDiesel Engine Dimensions

Engine Length Width Height Weight
International 6.9/7.3 IDI V-8 30.0 inches [1] 27.0 inches 27.0 inches [2] 995 lbs (dry)
6.2 GM/Detroit V-8 30.0 inches 26.0 inches 26.0 inches 750 lbs (dry)
6.5 GM/Detroit V-8 [3]
3.0 EcoDiesel V-6 27.3 inches 28.7 inches 27.4 inches 505 lbs (w/ oil)

[1] - Length measured from rear of engine block to front of accessory drive; does not include cooling fan.
[2] - Height measured from bottom of engine block to top of engine; oil pan sump not included and varies with application (i.e. pickup versus medium duty).
[3] - Overall dimensions are larger for turbocharged 6.5 diesels; turbocharger hangs off of the passenger side exhaust manifold.

Summary
  • When it comes to diesel conversions and engine swaps, physical dimensions are only half the battle; diesel engines tend to be hefty and their weight must be taken into consideration, particularly in smaller vehicles.
  • Big engines require a big cooling system; ensure that the there is adequate space in your converted vehicle for an appropriately sized radiator and engine cooling fan.
  • Certain engines listed above may have additional packaging restraints that includes accessory drive components, an intercooler, turbocharger, or other necessary equipment.
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