Before setting the (heavy) 6-71 supercharger in place on the intake manifold, make sure to remove this warning label (and DON’T over-torque the blower bolts!).

We mix old and new by building a 427-inch Dart LX and topping it with a Roots 6-71 blower. This e85 mill made 869 hp and 773 lb-ft of torque on Westech’s dyno.

Originally developed for industrial use, the 6-71 blower has become a hot-rodding icon. We delve into the details and test one on a 406-inch Chevy small-block.

Old school 6-71 blower bolted to a modern 383 stroked LS engine makes 753 hp and just a little bit of boost.

I know Jack was the first to run an 8-71 blower on his dragster, but am not sure about the 6-71. As for supercharging, turbocharging and nitrous oxide, here we go.