A V8 will produce more torque/HP then a V6 at low rpm's. If rated for 3000 stall on a 400hp big block it may stall on our motor at 1800. Our torque/HP doesn't come into play until spooling high boost. So it will be a dog on the street. Get the converter from a vendor that knows turbos like PTS, Eric Schertz, CK performance. They all installed T400's behind V6's and know what works best.