BSP Small Bore LS3 Cylinder Heads for LS1/LS6/LS2 Engines
OK, so these unique heads have been out for some months now, but a recent discussion amongst friends about the relevance of an LS1-based 383 build prompted me to push these Ballistic Speed Parts (BSP) small-bore LS3 rectangular port heads for the LS1/LS6/LS2 engines back into the spotlight. According to BSP, it took them two years to design these unique heads and from the looks of it, the time and effort paid off. There are two different stages and they flow serious air:
Stage 1 (As Cast):
• 326 cfm of airflow
• Over 48HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 255cc
Stage 2 (CNC Ported):
• 350 cfm of airflow
• Over 55HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 270cc
In addition to a unique design for the small bore LS engines, the BSP heads come with stainless steel intake and exhaust valves from Ferrea Racing Components. As for proven results, the BSP shop car, an FD RX7 with a 383 LS1 is putting down SAE: 516hp/458tq or STD: 530hp/470tq at the wheels and has trapped 135 mph.
Anyone on the forums have first-hand experience with these heads? Let us know what you think of them here!
And for anyone considering sticking with their small-bore LS1 block, this is yet another option to forgo the newer blocks and build what you already have!