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A 347ci small-block Ford built with Speedmaster forged internals and a CXRacing twin-turbo system produced 1,003 hp and 891 lb-ft of torque on the dyno. The key was upgrading from restrictive T3 turbine housings to properly sized T4 units with precise boost control.

A 347 Ford stroker built with forged internals, AFR Renegade heads, and a Speedmaster Funnel Web intake produced 519 hp naturally aspirated. After fitting a CXRacing twin-turbo kit adapted for blow-through carburetor use, the combination reached 919 hp at 15 psi with power still climbing.