21Aug2026
A 434 SBC engine underwent a full teardown, revealing significant wear; after modifications, it achieved 785 HP and 663 lb-ft on pump gas.
GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost.
SDPC’s latest 5.7 HEMI dyno session uncovered unexpected differences between truck and car intake manifolds.
