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3.6 to 3.9 Engine Conversion

The graphs below show the typical gains of a Gen 1 3.6 to 3.9 conversion compared with a std Gen 1 3.8 ;

Hartech Oversized Engine Power Hartech Oversized Engine Torque


The rear wheel torque graph with the higher line of each colour being the 3.9 showing how the torque (and therefore acceleration) reduce as you select higher gears. It also shows that there is a benefit to changing gear before peak revs ;

Hartech Oversized Engine In-Gear