New Process ID tag

New Process and New Venture Transfer Case I.D. Guide

New Process (NP)/New Venture (NV) transfer case identification guide, including brief specs and gear ratios for common transfer cases.

BorgWarner ID tag

BorgWarner Transfer Case I.D. Guide

BorgWarner (BW) transfer case identification guide, including brief specs and gear ratios for common transfer cases.

Ford automatic transmission

Ford Transmission Ratio Chart

Chart of gear ratios for popular automatic and manual transmissions found in Ford trucks.

Rear differential cut-away

Axle Ratio Comparison Tool

Calculate the effects of various parameters on engine RPM, including tire size, ring and pinion ratio, and transmission ratios.

transfer case

Gear Driven vs Chain Driven Transfer Cases

Comparison of gear driven and chain driven transfer cases, primarily focusing on the advantages and disadvantages of each gear box type.

Rear differential

Differential Types Explained | Open, Limited Slip, Lockers, and Spools

Explanation of differential types, including open differentials, limited slip differentials, various types of locking differentials, and spools.

BW-1356 transfer case

BorgWarner BW-1356 Transfer Case Fluid Replacement Procedures

Step-by-step guide to replacing the transmission fluid on a BW-1356 transfer case. The procedures are similar for most BorgWarner transfer cases and universally applicable.

Ford E4OD transmission

Ford E4OD Automatic Transmission Specs & Ratios

Ford E4OD transmission information. The E4OD platform was used as the basis for many future transmissions found in the Ford F-150.

Tremec SROD transmission

Tremec T170 Series Manual Transmissions - TOD, SROD, SMOD

Overview of the Tremec T170 manual transmission found in various Ford F-150 year trucks, including the SMOD, SROD, and TOD variations.