Increasing Displacement with a Stroker

Ever heard someone brag up their new "stroker" motor and wonder what the fuss was about? Short answer: they increased their engine's displacement, and likely its power, by adding a crankshaft with a longer stroke.

Bore and stroke are what make up an engine's displacement. If you don't have the money or space to install a big-block, increasing the stroke can bump up displacement for pennies on the dollar.

Building a stroker starts with a different crankshaft that has a longer throw, but beware, that one improvement may mandate other upgrades, including new rods and pistons for increased compression with even more gains.

There are a surprising number of options to fine-tune the sizes and combinations of these elements, but chances are somebody sells a pre-made configuration for your engine that's been thoroughly tested. There are dozens of opinions online that will give you ideas on displacement sizes, optimal stroke, and compression ratios.

Lunati is a great place to start looking at what's available to add some stroke to your  Chevy blocks, from a new crank all the way to new rods, pistons, and cams.

View Lunati's complete catalog online.