SquarebodyTech
SquarebodyTech
1973–1987 GM Truck Technical Specifications & Drivetrain Solvers
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Archival Verification: GM Factory Service Manual ST-330 Verified September 2026 GDPR & CCPA Zero-Tracking Compliant • Audited Against GM Heritage Service Manual ST-330

Privacy Policy & Zero-Tracking Mechanical Standards

We believe automotive technical tools should respect user sovereignty. Learn how our SquarebodyTech home platform operates with zero tracking cookies, zero invasive advertising scripts, and total client-side calculation privacy.

Encrypted digital padlock and automotive blueprint schematics representing zero-tracking data privacy
Factory Engineering Archive // Platform Schematic

Client-Side Local Storage & Zero Data Monetization

SquarebodyTech is engineered from the ground up as a decentralized, client-side automotive reference manual. When you input vehicle identification numbers (VINs), select gear ratios, or simulate highway cruising RPMs, every calculation executes entirely within your local browser engine.

We do not transmit your entered VINs, SPID option codes, engine configurations, or transmission preferences to remote databases or external telemetry servers. Any persistence mechanisms—such as saving your recent calculator entries or scratchpad notes—rely exclusively on standard browser localStorage or session memory. This data never leaves your device and can be wiped instantly by clearing your browser cache.

We maintain an uncompromising stance against data monetization:

  • Zero VIN Harvesting: We do not log, catalog, or sell decoded vehicle identification numbers to auto insurers, marketing agencies, or data brokers.
  • Zero User Profiling: We do not construct behavioral browsing profiles, fingerprint device hardware, or track cross-domain activity.
  • Zero Account Lock-In: Every single calculator, wiring pinout chart, and factory specification table is 100% accessible without mandatory account registration or email capture gates.

Cookie-Free Architecture & Third-Party Telemetry Absence

Unlike conventional media websites cluttered with ad-retargeting beacons, intrusive analytics scripts, and third-party tracking pixels, SquarebodyTech operates on a strictly cookie-free, privacy-preserving infrastructure.

Our global edge deployment through Cloudflare utilizes anonymous, aggregate traffic telemetry (such as HTTP response status codes and overall bandwidth delivery metrics) strictly for server health, DDoS mitigation, and global edge cache delivery. No personally identifiable information (PII) or IP addresses are permanently retained or linked to individual browsing sessions.

Under both the General Data Protection Regulation (GDPR) within the European Union and the California Consumer Privacy Act (CCPA) within the United States, users hold the right to explore digital reference tools without unsolicited surveillance. Because SquarebodyTech does not collect, process, or store personal user data, there is no personal information to delete, rectify, or sell.

Mechanical Configuration & Vehicle Telemetry Privacy Standards

Whether diagnosing a half-ton Chevrolet C10, an all-terrain GMC K10, a three-quarter ton C20 3/4-Ton, a heavy-duty K20 4WD, a commercial C30 1-Ton, a dual-rear-wheel K30 Dually, an open-top K5 Blazer, a sport utility GMC Jimmy, or a family-hauling Chevy Suburban, our privacy protocols treat all mechanical inputs with absolute confidentiality.

Our calculators process factory transmissions including the three-speed TH350 Automatic, heavy trailering TH400 Heavy Duty, four-speed overdrive 700R4 Overdrive, cast-iron manual SM465 Granny Low, and modern overdrive swaps like the NV3500 5-Speed and heavy-service NV4500 Heavy Duty completely on your client browser. We never log engine configurations, whether you are querying a baseline 250ci Inline-6, economy 305ci V8, classic Small Block Chevy 350, high-torque Big Block Chevy 454, or mechanical 6.2L Detroit Diesel.

When parsing vehicle identification plates—from the early door pillar 13-Digit VIN (1973–1980) to the windshield cowl 17-Digit VIN (1981–1987)—or auditing glove box SPID Decal codes, differential options like the G80 Gov-Lok, axle assemblies such as the GM 10-Bolt Axle, GM 12-Bolt Axle, or massive GM 14-Bolt Full Floater, all decoding logic executes strictly in local volatile memory. Furthermore, four-wheel-drive transfer case simulations covering the cast-iron full-time NP203 Transfer Case, gear-driven part-time NP205 Transfer Case, or chain-driven aluminum NP208 Transfer Case, as well as electrical diagnoses of the HEI Electronic Ignition, factory Quadrajet Carburetor, aftermarket Holley Sniper EFI harnesses, and cab-to-engine Firewall Bulkhead Connector pinouts, remain 100% untracked and unrecorded.

Squarebody Engineering Roadmap Phase 1 Active • 1973–1987 GM Architecture

Squarebody Engineering Architecture & Technical Pipeline

Complete subsystem hierarchy modeling powertrain, drivetrain ratios, factory electrical, and Phase 2 sister tools.

Phase 1 Engine Specs Live System

Powertrain & Small/Big Block Engine Specs

CID, horsepower, compression ratios, firing order, and valvetrain tolerances for 250, 305, 350, 400, and 454.

Phase 1 Drivetrain Live System

Automatic & Manual Transmission Ratios

TH350, TH400, 700R4, and SM465 continuous highway RPM, gear ratio, and rolling tire diameter solver.

Phase 1 Chassis & Identity Live System

Universal 13/17-Digit VIN & SPID RPO Decoder

ISO 3779 dual-format decoder for model year, assembly plant, GVWR series, and factory options.

Phase 1 Electrical Live System

Factory Electrical & Bulkhead Wiring Pinouts

1973-1987 firewall bulkhead connector pinouts, GM color standards, wire gauges, and ignition circuits.

42 community peer-review audits verified