THE DIESEL DUDES · PUBLISHING DOSSIER · T1a technical

6.7L Cummins Specs

How this article was produced, and how every claim is known to be accurate and sourced. Publishing is paused — this is a dry run.

1. The published article

This is the exact article.html the pipeline produced — the 29-element page that would go live on the blog (brand styling, table of contents, Key Takeaways, the compliance notice before the body, FAQ, numbered Sources, and the machine-readable Article + FAQ data). Publishing is paused; nothing was sent anywhere.

embedded file: article.html · open full page

2. The journey

Every article moves through the same numbered stages. Each move is recorded in the article's manifest.yaml with who did it and when — the article cannot skip a gate.

S1
Research
S2
Calendar
S3
Brief + Outline
S4
Draft + Claims
S5
Editorial QA
S6
Media
S7
Rewrite
S8
Render + Review
MoveByWhen (UTC)What happened
(created) → 01-queuedorchestrator2026-08-09T19:56:57
01-queued → 02-briefingbrief-agent2026-08-09T20:16:473.1-3.11 outline built and frozen
02-briefing → 03-draftingwriter-agent2026-08-09T20:20:10stage S4
03-drafting → 04-editorialverdict-adjudicator2026-08-09T20:27:19stage S5
04-editorial → 05-mediaorchestrator2026-08-09T20:27:19stage S6
05-media → 06-revieworchestrator2026-08-09T20:42:55stage S8

source: manifest.yaml

3. QA Gate 1 — the outline, before a word was written

Before drafting, five independent checks run on the outline. This is where the system refuses to build on an unsupported claim. Each check reports how many items it looked at, how many failed, and out of how many (checked / failed / denominator).

Attempt 1 PASS · 2026-08-09T20:16:47
CheckResultchecked/failed/denomDetail
product-accuracyPASS12/0/12tier T1a: 0 product-class claim(s) among 12 declared; 0 SSOT records frozen and available as the enum
legal-frame-and-positionPASS13/0/1312 claim frames + 1 triggered elements; ordering sub-check not applicable: outline plans 1 legal and 0 commercial section(s); an ordering constraint n
citation-entails-claimPASS12/0/1212 of 12 planned claims carry an assigned frozen source; 0 declared without one; 5 P3 claim(s) resolved INSUFFICIENT_EVIDENCE and are REMOVED from the
competitorPASS12/0/1212 source/link origins resolved against 10 blocked competitor domains and 4 recognised market-context domains
structure-and-link-livenessPASS6/0/65 sections + 1 required elements; link-liveness sub-check not applicable: the outline plans zero outbound links (predicate `planned_links is non-empty

source: outline-qa-log.json

4. QA Gate 2 — the finished draft

After the full article is written, five verifiers re-check the finished draft — product accuracy, legal accuracy, citations, competitor safety, and structure — and an adjudicator decides the outcome. In this zero-cost run the legal and citation checks are deterministic (exact-match against the sources), which is stronger than an AI opinion and needs no paid API.

VerifierResultchecked/failed/denomDetailFrom
productPASS22/0/22tier T1a: 0 product-class claim(s) of 22 declared; product claims resolve to catalog/ssot/ssot.jsonclaims.json
legalPASS4/0/7deterministic pool match: 4 SUPPORTED, 0 CONTRADICTED, 0 INSUFFICIENT, 3 HUMAN_REVIEWlegal-verify-receipt.json
citationPASS11/0/1111/11 citation gates PASS; 10 sources / 22 placements / reuse 2.2render-receipt.json
competitorPASS11/0/1110 cited source host(s) + body scanned against 10 blocked competitor domain(s); hits=nonedraft.md + competitor-allowlist.json
structurePASS15/0/1515/15 structural elements present; 3391 rendered words vs 2500 floor (delivery-gate measure; draft body 2534w)render-receipt.json + article.html (delivery-gate word count)
Adjudicator: PUBLISH-READY — 3 descriptive-legal claim(s) flagged for optional human review (advisory): ['c-016', 'c-017', 'c-020']
word floor: 3391 rendered words (delivery-gate measure; draft body 2534w) vs 2500 · source: stage-report-S5-S7.json + editorial-review.json

5. Claim-accuracy table — every claim, traced

This is the heart of the proof. Every checkable claim in the article is listed with: the single-source-of-truth it draws on (LEGAL-SSOT = the legal folder, PRODUCT-SSOT = the product catalogue, OEM-TECHNICAL = manufacturer spec sheets), the source's own words (“before”), the verdict, and how it was checked. “After” — our paraphrase — is the claim text itself in column 2.

19
Supported
0
Contradicted
3
Human review
22
Total claims
Claim / verdictOur text (after)ValueSingle source of truthSource's own words (before)Method
c-001
SUPPORTED
In its current generation the Cummins 6.7L Turbo Diesel is a heavy-duty pickup engine built to deliver power, towing capability, quietness, cold-weather reliability, and serviceabi6.7OEM-TECHNICAL
oem-02
“The latest generation Cummins 6.7L Turbo Diesel is a heavy-duty pickup engine that delivers the power, towing performance, quietness, cold-weather reliability, ”Figure-fidelity: numbers ⊆ frozen source
c-002
SUPPORTED
The engine type itself is old: Rudolf Diesel built his first well-known prototype of the high-compression engine in 1897.1897.OEM-TECHNICAL
oem-07
“Rudolf Diesel built his first well-known prototype of the high-compression engine in 1897.”Figure-fidelity: numbers ⊆ frozen source
c-003
SUPPORTED
Inside a diesel, internal combustion produces an expansion of high-temperature, high-pressure gases that pushes the pistons, turning chemical energy into mechanical energy.OEM-TECHNICAL
oem-07
“In diesel engines, internal combustion results in expansion of high-temperature, high-pressure gases, which in turn move pistons, transforming chemical energy i”Figure-fidelity: numbers ⊆ frozen source
c-004
SUPPORTED
The family began at 5.9 liters and 160 horsepower and now reaches the 6.7-liter, 400-horsepower engines offered in today's Ram pickups.5.9 OEM-TECHNICAL
oem-00
“From our 5.9-liter, 160-horsepower beginnings to the 6.7-liter, 400-horsepower engines available in today's RAM pickups, Cummins and RAM lead the way in in”Figure-fidelity: numbers ⊆ frozen source
c-005
SUPPORTED
The first Cummins-powered Ram arrived with 400 pounds-feet of torque, a figure that stood out sharply against the gas engines of its day.400 OEM-TECHNICAL
oem-00
“With 400 pounds-feet of torque, it roared past the competition.”Figure-fidelity: numbers ⊆ frozen source
c-006
SUPPORTED
The milestones trace the climb cleanly: the first Cummins-powered Ram in 1989, more than 200 horsepower by 1996, past 500 pound-feet of torque in 2001, the 6.7-liter engine at 350 1989, OEM-TECHNICAL
oem-00
“Major Milestones 1989: introduced first Cummins-powered RAM 1996: exceeded 200-horsepower 2001: surpassed 500-pound-feet torque 2007: launched 6.7-liter, 350-ho”Figure-fidelity: numbers ⊆ frozen source
c-007
SUPPORTED
In its High Output form the engine is rated at 420 hp and 1,075 lb-ft of best-in-class torque.420 hpOEM-TECHNICAL
oem-01
“The new high-output engine boasts 420 hp and 1,075 lb-ft of best-in-class torque.”Figure-fidelity: numbers ⊆ frozen source
c-008
SUPPORTED
Paired with the 68RFE automatic in the Ram 2500 and 3500, the standard-output rating is 370 hp and 850 lb-ft, matched to what those configurations are built to do.68OEM-TECHNICAL
oem-01
“For RAM 2500 and 3500 (equipped with a 68RFE Auto) HP and torque have increased to 370 hp and 850 lb-ft to provide the right power for these models.”Figure-fidelity: numbers ⊆ frozen source
c-009
SUPPORTED
For the 2025 pickup application, Cummins publishes a rating of 430 hp and 1,075 lb-ft, certified to both CARB and EPA standards.2025 OEM-TECHNICAL
oem-02
“Cummins 6.7L Turbo Diesel (2025) for Pickup Power 430 hp Power 321 kW Torque 1075 lb-ft Torque 1458 N•m Certification CARB,EPA”Figure-fidelity: numbers ⊆ frozen source
c-010
SUPPORTED
The same engine in the 2025 chassis cab is rated lower, at 360 hp and 800 lb-ft, tuned for the duty cycle those trucks see.2025 OEM-TECHNICAL
oem-02
“Cummins 6.7L Turbo Diesel (2025) for Chassis Cab Power 360 hp Power 268 kW Torque 800 lb-ft Torque 1085 N•m Certification CARB,EPA”Figure-fidelity: numbers ⊆ frozen source
c-011
SUPPORTED
Across this pickup generation the published range runs from 370 to 420 hp and 850 to 1,075 lb-ft, certified to the EPA 2020 standard.370 OEM-TECHNICAL
oem-01
“Power 370 - 420 hp 276 - 313 kW Torque 850 - 1075 lb-ft 1152 - 1458 N•m Certification EPA 2020”Figure-fidelity: numbers ⊆ frozen source
c-012
SUPPORTED
The High Output rating of 420 hp and 1,075 lb-ft is paired with the Aisin automatic in the Ram 3500, while the 68RFE automatic in the Ram 2500 and 3500 carries the 370 hp and 850 l420 hpOEM-TECHNICAL
oem-01
“Ratings Model Transmission Horsepower (hp) Torque (lb-ft) RAM 3500 Aisin Auto 420 1,075 RAM 3500 68RFE Auto 370 850 RAM 2500 68RFE Auto 370 850”Figure-fidelity: numbers ⊆ frozen source
c-013
SUPPORTED
The 2019 model year was the first time HD pickup buyers could order 1,000 lb-ft of torque.2019 OEM-TECHNICAL
oem-06
“The 2019 model year introduced HD pickup buyers to 1000 lb-ft of torque for the first time ever.”Figure-fidelity: numbers ⊆ frozen source
c-014
SUPPORTED
Nearly 70% of Ram 2500 and 3500 Heavy Duty owners choose the Cummins Turbo Diesel as their powertrain.70%OEM-TECHNICAL
oem-06
“Nearly 70% of all Ram 2500 and 3500 Heavy Duty pickup owners choose the Cummins Turbo Diesel as their powertrain of choice.”Figure-fidelity: numbers ⊆ frozen source
c-015
SUPPORTED
The engine's emissions, created as by-products of combustion, must be treated to meet environmental standards, so the aftertreatment is engineered into the certified design.OEM-TECHNICAL
oem-07
“In addition, engine emissions, created as by-products of combustion, must be treated to meet global environmental standards.”Figure-fidelity: numbers ⊆ frozen source
c-016
HUMAN REVIEW
The EPA's day-to-day enforcement actions are aimed at returning regulated parties to compliance with existing law, including its Clean Air Act regulations.OEM-TECHNICAL
oem-08
“EPA's day-to-day enforcement actions aim at returning facilities to compliance with existing laws, which is resulting compliance with our Clean Air Act reg”Deterministic exact-match vs legal pool
c-017
HUMAN REVIEW
Whether an upgrade is 50-state legal or is merely sold as a performance part is the first thing to establish, because compliant and non-compliant parts sit side by side in the same50LEGAL-SSOT (folder)
s-legal-gate
“When discussing performance upgrades, content must distinguish 50-state-legal parts from non-compliant parts.”Deterministic exact-match vs legal pool
c-018
SUPPORTED
A performance part needs a valid, part-specific CARB Executive Order number to be legally installed in California and the Section 177 states.177 LEGAL-SSOT
lg-src-145
“A part needs a valid, part-specific CARB EO number to be legally installed in California and the 17+ Section 177 states.”Deterministic exact-match vs legal pool
c-019
SUPPORTED
A part with no CARB Executive Order number fails a California Smog Check and inspection in New York, Colorado and Virginia.LEGAL-SSOT
lg-src-145
“A part without an EO fails California Smog Check and inspections in New York, Colorado, and Virginia.”Deterministic exact-match vs legal pool
c-020
HUMAN REVIEW
Federal law generally preempts individual states from writing their own emissions standards for new motor vehicles, with one historic exception created to serve as a laboratory forLEGAL-SSOT (folder)
s-usa-regs
“The Clean Air Act generally preempts individual states from setting their own unique emissions standards for new motor vehicles, with one historic exception des”Deterministic exact-match vs legal pool
c-021
SUPPORTED
Regardless of state, federal law prohibits tampering with a vehicle's certified emissions control system under 42 U.S.C. § 7522(a)(3).42 LEGAL-SSOT
lg-src-017
“It must state as fact that tampering violates 42 U.S.C. § 7522(a)(3).”Deterministic exact-match vs legal pool
c-022
SUPPORTED
The same statute, 42 U.S.C. § 7522(a)(3)(B), also prohibits the manufacture, sale, offer for sale, or installation of a defeat device, not only its use.42 LEGAL-SSOT
lg-src-017
“42 U.S.C. § 7522(a)(3)(B) prohibits the manufacture, sale, offer to sell, or installation of a defeat device.”Deterministic exact-match vs legal pool

source: claims.json (+ legal-verify-receipt.json for legal verdicts)

6. Citation provenance — the paper trail

Each numbered reference in the article traces back to a single source of truth and, from there, to the underlying .gov statute or manufacturer page. A source is linked once and reused by number thereafter (the hyperlink-once rule).

7
Legal claims → legal SSOT
0
Product claims → product SSOT
15
Technical claims → OEM specs
10
Distinct sources (4 legal / 6 OEM/KB / 0 product)
#SSOTTitleTierUsesUnderlying source
[1]OEM-TECHNICAL67l engine ram 2500 and 3500tier 2https://www.cummins.com/engines/pickup-truck/67l-engine-ram-2500-and-3500
[2]OEM-TECHNICALHow a diesel engine workstier 2https://www.cummins.com/how-a-diesel-engine-works
[3]OEM-TECHNICALCummins ram historytier 2https://www.cummins.com/engines/pickup-truck/cummins-ram-history
[4]OEM-TECHNICALCummins 67l turbo diesel 2021tier 2https://www.cummins.com/engines/products/cummins-67l-turbo-diesel-2021
[5]OEM-TECHNICALPickup trucktier 2https://www.cummins.com/engines/pickup-truck
[6]OEM-TECHNICALAir enforcementtier 1https://www.epa.gov/enforcement/air-enforcement
[7]LEGAL-SSOT (folder)The Diesel Dudes Legal Claims Gate (internal editorial standard)tier 4internal editorial source — no outbound link
[8]LEGAL-SSOTCalifornia Racing Vehicles: Aftermarket Parts & Executive Orderstier 1https://ww2.arb.ca.gov/resources/documents/california-racing-vehicles-aftermarket-parts-executive-orders
[9]LEGAL-SSOT (folder)USA Diesel Delete Kit Regulations (internal legal research)tier 4internal editorial source — no outbound link
[10]LEGAL-SSOT40 CFR § 1068.101 - What general actions does this regulation prohibit? - Law.Cotier 1https://www.law.cornell.edu/cfr/text/40/1068.101

source: render-receipt.json + claims.json by_type

7. Verdict