6.4L Power Stroke Specs: Source-Scoped Ford Reference

Direct answer: use a source-scoped specification sheet

The verified output anchor is 350 hp and 650 lb-ft for the F-Series Super Duty pickup contexts in Ford's reviewed 2008 and 2009 towing material. The reviewed 2009 brochure attaches 2,000 rpm to peak torque. Preserve the year, vehicle type and source beside those figures instead of treating 6.4L as a complete configuration identity.

The official 2009 supplement directly supports operating and service fields but not the advertised output headline. Combining the sources is acceptable only when each field retains its provenance. A missing cell stays missing; do not complete a polished internet table from memory or generic secondary summaries.

Start with the complete application identity

Record the private VIN, model year, build date, F-250/F-350 pickup, F-450/F-550 or chassis-cab identity, cab and body, installed engine, transmission, drive layout, axle information, emissions label and completed-vehicle status. A Power Stroke badge does not establish a pickup calibration or every service field.

Retrieve the matching Ford brochure or technical guide, owner guide and diesel supplement. If the engine, controller, transmission, cooling system or oil system has been replaced, preserve the original-build evidence and create a separate installed-assembly record. Do not resolve a transition-year or incomplete-vehicle question from registration year alone.

The 2008 output is a Super Duty pickup anchor

Ford's original 2008 RV and Trailer Towing Guide presents the 6.4L Power Stroke V8 Turbo Diesel at 350 hp and 650 lb-ft in the F-Series Super Duty pickup section. Keep the pickup identity attached to the figures because the broader vehicle family includes different completed-vehicle and chassis contexts.

The reviewed guide does not provide every architecture dimension, a full output curve or a measurement from a current truck. It also does not certify a Canadian VIN, chassis cab, replacement engine or modified calibration. Those are separate evidence requests, not values to infer from the pickup headline.

The 2009 pickup headline repeats 350 hp and 650 lb-ft

Ford's original 2009 towing guide preserves the same 350-hp and 650-lb-ft pickup headline. This is a second model-year anchor, not proof that every 6.4L application, market, transmission or calibration shares an identical specification.

Record the two source rows separately even when their advertised values match. Separate rows keep later corrections, application notes or document differences visible and prevent an apparent range from being mistaken for a complete 2008-2010 matrix.

The 2,000-rpm brochure value belongs to torque

The reviewed 2009 Super Duty brochure presents 650 lb-ft at 2,000 rpm in its pickup context. Store the speed in the torque row. It must not be attached to horsepower merely because both output values appear in the same brochure treatment.

Peak-horsepower rpm and a full curve remain unresolved in this evidence set. A governed-speed statement from the diesel supplement is also not a substitute. Keep advertised engine output, peak speed, governed limit and measured wheel result in separate fields.

Do not manufacture a complete 2008-2010 architecture table

The reviewed primary material does not provide a complete bore, stroke, compression-ratio, injection-pressure, turbocharger-dimension, firing-order, block-material or head-material table. Those familiar fields remain blank until an appropriate Ford or engine-manufacturer technical source is reviewed.

A generic secondary engine summary may help locate a source, but it cannot become the source of record here. Do not turn repeated unsourced specifications into certainty, and do not transfer a specification from an adjacent International application without exact engine, calibration and publication reconciliation.

Governed speed is an operating limit, not peak-power rpm

Ford's official 2009 supplement states a maximum governed speed of 3,700 rpm and warns not to exceed 4,000 rpm. These values describe operating boundaries. They are not evidence that the engine produces peak horsepower or peak torque at either speed.

Preserve both limits with the official supplement and its application context. A current calibration, controller change or transmission strategy can raise separate candidate questions, but it does not authorize rewriting Ford's published limit or inferring the engine's current safe operation.

Oil capacity is a bounded service specification

The 2009 supplement lists 15.0 U.S. quarts (14.2 litres) of engine oil including the filter, with 1.0 U.S. quart (1.0 litre) assigned to the filter. This is a service-refill field for the reviewed publication context, not a dry-build quantity or measured-drain guarantee.

Keep capacity independent from oil performance, viscosity, interval and final level. An altered pan, remote filter or replacement engine needs installed-hardware evidence. Use the dedicated capacity workflow for the warm, level and timed final check instead of treating a specification-sheet row as a blind fill instruction.

Oil performance and viscosity remain a separate selection workflow

The official table identifies Ford WSS-M2C171-E engine oil, while the surrounding instructions support API CJ-4/CJ-4-SM and application-specific viscosity selection. Those are valuable specification fields, but they do not fit inside one undifferentiated oil-type cell.

Use the dedicated oil-type guide to reconcile performance specification, API category, SAE grade, expected temperature, heavy-duty or towing use and current product evidence. A specification sheet should link that workflow, not claim approval for a present retail product.

The engine-coolant row includes defined system shares

Ford lists 30.6 U.S. quarts (29.0 litres) of engine coolant for F-Super Duty in the reviewed table. Its footnote says the total includes the heater and 5.0 U.S. quarts (4.7 litres) in coolant recovery. Preserve the inclusion note with the number.

This is not a promise that a drain will recover the full quantity, and it does not diagnose concentration, contamination, leakage or cooling-system condition. A modified radiator, heater circuit, recovery system or incomplete vehicle requires its own evidence and service procedure.

Fuel coolant is a separate 2.0-quart circuit

The same F-Super Duty table lists 2.0 U.S. quarts (1.9 litres) for fuel coolant. Store this as a separate circuit rather than adding it to engine-coolant capacity or assuming the fluids share one service event.

The row does not prove the candidate system's fill, concentration, flow, condition or modification status. Do not infer a diagnostic conclusion from capacity. Identify the exact circuit and follow Ford's matching procedure before servicing or interpreting a discrepancy.

Manual and automatic transmission fields must not be merged

Ford's reviewed supplement lists 5.8 U.S. quarts (5.5 litres) of full-synthetic manual-transmission fluid meeting WSD-M2C200-C. For automatic-transmission fluid, the table says to refer to the Owner's Guide rather than supplying a capacity.

Do not fill the automatic cell from the manual row or assume which transmission is installed. Record transmission identity and retrieve its application-specific owner or workshop literature. Engine specifications, transmission service fill and complete-vehicle driveline configuration remain separate evidence layers.

Service specifications are not measured candidate values

A published refill quantity, lubricant standard or operating limit describes the source application. It does not prove what is installed, how much was drained or added, the current fluid level, concentration, pressure, temperature or condition of a used truck.

Record measurements with units, procedure, test conditions, tool, date and person performing the check. Keep the published reference beside the observation rather than overwriting either one. Resolve discrepancies through identity, hardware and procedure before assigning a fault.

Engine specifications do not set payload or towing capacity

The 350-hp and 650-lb-ft engine headline cannot determine a truck's payload, conventional tow rating, fifth-wheel rating, gooseneck rating, GCWR or axle limits. Those are complete-vehicle and configuration-specific values shaped by body, cab, wheelbase, drive system, axle ratio, tires, hitch and certification labels.

Use the towing guide only after identifying the exact candidate row and subtracting real truck, occupant, cargo and hitch loads. A more powerful engine does not raise a door-label payload or permit exceeding the lowest applicable rating.

Factory output is not wheel output or current output

Ford's advertised engine ratings are not a chassis-dynamometer result. Wheel output depends on test method, transmission, driveline, tires, correction method, conditions and the truck's present calibration and condition. Do not subtract a generic driveline-loss percentage.

A modified truck requires a separate parts, calibration and measurement record. The factory specification remains historical evidence, not a promise of present output, acceleration, fuel economy, smoke, emissions operation or mechanical health.

Specifications do not establish reliability or lifespan

A capacity, rating or operating limit provides no failure-rate denominator and cannot rank model years. Reliability requires defined populations, outcomes, exposure and credible evidence. Candidate condition requires records, inspection, measurements and unresolved-risk tracking.

Keep problems, reliability, best-years and years-to-avoid pages independent. A truck that matches its factory sheet can still have unresolved condition or history, while a missing document does not prove a failure. Do not convert specifications into a universal life expectancy.

Build a reproducible candidate specification sheet

Populate only fields supported for the exact candidate or clearly labelled source example. Attach the document, year, vehicle context and retrieval date to every entry. When two sources differ, preserve both rows and investigate rather than averaging them.

A blank cell is a valid result. It shows where another primary source or inspection is required and prevents a polished table from concealing uncertainty.

Canadian manual and recall checks stay independent

Use Ford Canada's owner-manual and recall tools and the Government of Canada safety-recall database with the exact private VIN where applicable. Retain dated results and completed-repair evidence, and use an appropriate service pathway for a current Canadian application question.

Those services do not certify output, installed equipment, fluid fill, calibration, condition, reliability, inventory, seller, dealer count, price, financing or offer. A recall result changes no specification unless an applicable official instruction explicitly supplies the revised field.

Use specifications carefully in a used-truck inspection

Compare the private VIN, certification labels, installed engine and transmission, emissions label, major hardware and service records with the source-scoped sheet. Photograph identifiers and document replacements or modifications. Do not dismantle or run an unsafe truck merely to complete a cell.

Obtain a qualified inspection when identity, warnings, fluids, calibration or records conflict. Price only defined maintenance and diagnosed repairs. Do not invent a reliability penalty, engine-life adjustment or market discount from one specification mismatch.

6.4L Power Stroke specifications checklist

Use this sequence before comparing specifications or applying them to a candidate.

• Identify model year, build date, Ford vehicle, completed body and installed engine.
• Retrieve the matching brochure, towing guide, owner guide and diesel supplement.
• Keep the 2008 and 2009 pickup output anchors as separate source rows.
• Attach 2,000 rpm to torque, not horsepower.
• Keep 3,700-rpm governed and 4,000-rpm do-not-exceed limits separate from power peaks.
• Do not fill bore, stroke, compression, injection or turbo fields without an exact primary source.
• Preserve the filter share inside the 15.0-qt/14.2-L oil total.
• Preserve the heater and recovery share inside the 30.6-qt/29.0-L coolant total.
• Keep the 2.0-qt/1.9-L fuel-coolant circuit separate.
• Do not invent automatic-transmission capacity from the manual row.
• Separate published specifications from measured candidate values.
• Keep vehicle ratings, diagnosis, reliability, VIN, inventory and pricing independent.

Frequently asked questions

What output is verified? Ford's reviewed 2008 and 2009 F-Series Super Duty pickup material supports 350 hp and 650 lb-ft, with the reviewed 2009 brochure placing the torque peak at 2,000 rpm. Peak-horsepower rpm remains unresolved in this evidence set.

What operating and service fields are verified for the reviewed 2009 context? The official supplement supports 3,700-rpm governed and 4,000-rpm do-not-exceed limits, 15.0 U.S. qt/14.2 L of oil including the filter, 30.6 U.S. qt/29.0 L of engine coolant and 2.0 U.S. qt/1.9 L of fuel coolant. Does this certify every chassis cab, architecture field, automatic-transmission capacity, Canadian VIN, current condition, reliability, inventory, price or offer? No; verify the exact application and leave unsupported fields blank.