# Rünge Flat Eight Engine for Vintage 911s

> Rünge's new air-cooled flat-eight engine for vintage 911s hits the market.
- Title: Rünge Flat Eight Engine for Vintage 911s · The Drive
- Summary: Rünge's new air-cooled flat-eight engine for vintage 911s hits the market. Rünge's air-cooled flat-eight engine for vintage 911s will fit 1974-1989 models…
- Keywords: rungenge, flat eight, vintage 911, porsche 911, air cooled, dyno test, cars, technology, Rünge, Flat, Eight, Engine
- Source: The Drive — https://thedrive.com/news/new-flat-eight-crate-engine-for-vintage-911s-is-coming-along-nicely
- Author: Jerry Perez
- Published: 2026-10-06T17:21:34+00:00
- Read time: 1 min
- Topics: rungenge, flat eight, vintage 911, porsche 911, air cooled, dyno test, cars, technology
## Engine specs
Rünge's new air-cooled flat-eight engine has 32 valves, 5.3 liters of displacement, dual overhead cams per bank, and a 12:1 compression ratio.
## Dyno test run
The engine shows a unique sound reminiscent of vintage endurance racing during dyno testing.
## Compatibility
This engine fits classic 1974 to 1989 Porsche 911 G-body models needing an upgrade.
## Horsepower and price
Rünge says horsepower and torque specs will release around December, with prices potentially up to $250,000.
## Company background
Minnesota-based Rünge has been building custom cars since 2011 using traditional wooden bucks for metal bodies.
## Key takeaway

Rünge's air-cooled flat-eight engine for vintage 911s will fit 1974-1989 models with 32 valves and 5.3 liters of displacement.