Hey guys- I looking for input on the old GM TPI injection. I've got a customer that had a 383 built (original engine was a 350). It is still using all the original TPI equipment. Engine has a Comp Cams Thumper hyd roller (p/n 12-600-8). Specs are 227/241 (Int/Ex) with a 107* lobe separation. The cam isn't really radical for the engine size, but the 107 LSA has me wondering. Car has pretty serious issues which I don't think are related to the cam, but I would like to know it's limitations so I don't end up chasing my tail once I get whatever other issues it has sorted out. I also know that injectors are really on the ragged edge of being too small for the power that this *should* be capable of... But that's for another thread.