Runnin' Lean

Throwback to March, 2014 at Duffee Motorsports

Took the Lawman Boss 429 engine to WesTech Performance Group in California a week or so ago with my good friend Brian Duffee. Brian’s shop, Duffee Motorsports in Glendale Arizona, had just completed a complete rebuild of the Lawman’s original 800 mile Boss 429 engine. Machinist Pat Deichert did a masterful job revitalizing the bottom end and Brian worked some magic on a pair of NOS Boss 429 heads to enable the motor to reach a rev limited peak HP of 854.1hp at 6600rpm and 704 lb/ft of torque at 5400rpm. At only 6600rpm and a max boost of 8.9lbs there’s way more in this motor. The curve just kept going up. No point pushing it further as it had already proved itself nicely.

Hash Wagon

Flathead Friday