Ok, the 92 LX that I bought to put my Dart motor into was formerly a supercharged car. I was pretty sure it had an after market pump in the tank. The motor that is in it now is mostly stock with minor bolt ons and an unknown cam. I put a FP guage on and with the vac line off the FP was 50psi. Wth the line on it fell to about 44psi. The motor has a stock FPR on it right now but I have an adjustable that i will put on later this week.
1. would you guys agree that there is a larger pump in the tank, if so what size. With my 42lb injectors on my new motor I will need at least a 190 for what Rick reccomends.
2. I saw only a 6psi drop in FP with the vac line on. I havent found any vac leaks, but I seem to remember that there is closer to a 10 psi drop. I know that depending on the cam the vac will vary, but I still think that 6psi drop is on the low side.
3. Does anyone know how much difference a larger FP would make on the psi as compered to stock pump, both using a stock FPR.
Im really hoping to avoid dropping the tank to confirm that the pump that is in there will be enough for my new motor.
1. would you guys agree that there is a larger pump in the tank, if so what size. With my 42lb injectors on my new motor I will need at least a 190 for what Rick reccomends.
2. I saw only a 6psi drop in FP with the vac line on. I havent found any vac leaks, but I seem to remember that there is closer to a 10 psi drop. I know that depending on the cam the vac will vary, but I still think that 6psi drop is on the low side.
3. Does anyone know how much difference a larger FP would make on the psi as compered to stock pump, both using a stock FPR.
Im really hoping to avoid dropping the tank to confirm that the pump that is in there will be enough for my new motor.
