Breaking The Rules: 4 Controversial Porsche 911 Engine Swaps That, Actually Work - Storyboard

Engine-swapping a 911 isn't anything new, but these ones are are a bit controversial

A four-cylinder Honda K20 swap replaces a well-enjoyed M97 flat-six in order to avoid, potentially, expensive repairs

The K-Series engines are known for staying reliable even when making big power. It is also affordable and benefits from great aftermarket support

Honda K-series also boast incredible thermal efficiency. Initial power was 435 hp to the wheels, with 500 being the real goal.

This Subaru-swapped 997 solves the EJ25 problem while keeping the center of gravity intact

First presented at the 2022 SEMA, it was built by DevSpeed

Apparently, all you need to do for reliable 550+ hp is a closed-deck block, and the EJ25 becomes rock-solid

The most generic build is also the most sensible as it solves major issues with the 996 and 997.1 Carrera models

CPE specialies in LS conversions, and this LS3 swap makes 495 hp - 240 more than the stock 997 Carrera S engine

The LS3 V-8 is also 40 lbs lighter than the flat-six and does not suffer from the usual IMS and RMS issues, M96/M97 mills are known for

A 1966 Porsche 911 gets a Mazda rotary swap, because why not?

The reason is, the factory engine was beyond repair and the owner thought he could piss purists off by making somethig unique

A lot of custom work has been done to the classic 911, which can now push close to 700 hp

Swipe up to learn more about these 911s with unusual engine swaps, and why they work