Dyno Testing Promaxx LS3 Small Bore Heads - YouTube(02)

Dyno Testing Promaxx LS3 Small Bore Heads - YouTube(02)

Image gallery: Promaxx Ls3 Heads

ProMaxx 3165 XXtreme 260 LS3 Rectangle Large Bore 59cc Bare Heads - RPM XXTREME 260 LS3 Rectangle Large Bore (SOLD IN PAIRS) - PROMAXX Dyno Testing Promaxx LS3 Small Bore Heads - YouTube