# Pacific P510 Logging Truck with Twin Diesel Engines

> A 1991 New Zealand logging truck used two Caterpillar engines to haul logs without brakes.
- Title: Pacific P510 Logging Truck with Twin Diesel Engines | Shortify
- Summary: A 1991 New Zealand logging truck used two Caterpillar engines to haul logs without brakes. A Pacific P510 logging truck from 1991 used twin 14.6L Caterpillar…
- Keywords: pacific p510, caterpillar 3406b, caterpillar 3406a, kaingaroa state forest, new zealand, logging truck, diesel engine, trailer, cars, technology, Pacific, P510
- Source: The Drive — https://thedrive.com/news/legendary-twin-engine-logging-truck-had-a-14-6l-diesel-v8-powering-the-trailer-too
- Author: Caleb Jacobs
- Published: 2026-10-13T18:04:51+00:00
- Read time: 1 min
- Topics: pacific p510, caterpillar 3406b, caterpillar 3406a, kaingaroa state forest, new zealand, logging truck, diesel engine, trailer, cars, technology
## Pacific P510 Logging Truck
A Pacific P510 semi-truck hauled logs in New Zealand using twin diesel engines.
## Twin Engine Setup
The truck used a 14.6-liter Caterpillar 3406B engine for the tractor and a 14.6-liter Caterpillar 3406A for the trailer.
## Power and Performance
The twin engines produced about 900 horsepower to pull multiple trailers in steep terrain.
## Engine Details
Both engines had turbochargers, separate transmissions, and CAT’s BrakeSaver tech for braking.
## Dust and Air Intakes
The trailer’s air intake was moved to prevent dust from entering the engine.
## Engine Challenges
Early issues included dust problems and finding suitable differentials for the heavy load.
## Current Status
The truck is being restored by Lance Magee, who may have sold the trailer for scrap.

> Lance told me that the first lot of Meritor Rockwell diffs couldn’t handle the weight...
## Key takeaway

A Pacific P510 logging truck from 1991 used twin 14.6L Caterpillar diesel engines to power a trailer for logging in New Zealand's Kaingaroa State Forest.