performance · FF-0285

What were the final dyno numbers for Steve Coppock's supercharged Flathead?

300 horsepower at 5,300 rpm and 322 foot-pounds of torque, with the timing still a little conservative. Steve notes that the same basic design came out in 1932 with 65 horsepower, so this is almost five times that. His calculated prediction with the first pulley was 295 horsepower, plus or minus 5 percent.

Expert

Steve Coppock

Evidence

measured

Component

dyno result

Applicable scope

Steve Coppock's supercharged 8BA-style Ford Flathead V8, about 290 cubic inches, on the engine dyno at Klein Engines