Does anyone know if big block TBI injectors are any different than small block injectors? I have a suburban with TBI that I just built a mild 350 for, and it seems to be running lean. I need to fatten this thing up, and was wondering if changing to big block injectors would help. I already plan to switch to a TPIS adjustable regulator, does anyone make a higher flow fuel pump? Any info you guys could provide would be greatly appriciated!! thanks, jon

 

ya there are 4 GM injector types, I think. 305, 350 truck, 350 cop car, 454. An adjustable regulator should do it good.