Last month HPP introduced to the readers a '64 421 H.O. Tri-Power engine buildup being performed by Jim Taylor. The goal of the project is to try and find 100 additional horsepower in a cast-iron ...

In the last issue we presented 18 engine assembly Do's and Don'ts related to the bottom end using an early 389 Tri-Power engine for illustration purposes. For this installment, we returned to DCI ...

Fummins Build Part 2: Stripping the Engine Posted: November 20, 2025 | Last updated: January 8, 2026 I purchased a 1997 Dodge 2500 with a P Pump Cummins engine. I am planning on building this motor ...