I have a GM crate 350 with Vortec heads that I converted to TBI. I bought a nice pump from auto performance engineering, but I think I mounted it too close to the exhaust manifold, cause it is now only putting out 5psi and my daily driver is dead. I really need a pump tomorrow.

Did GM make any external fuel pumps for TBI? I have a part number for a master or airtex pump..........these any good?

did you have a intank pump in the car when it happened?

No.............I would prefer an intank pump, but my tank needs to be modified to use one.

I use my mechanical pump as a scavenger to feed the electric pump.

bought a tpis pump once and left my intank pump in the tank and this tpis pump sucked something out of the intank pump and messed it up bad.... maybe yours got something from the mechanical pump.

you can also use a inline pump for tpi and TBI's regulator will cut the pressure down. I have a TPI intank pump in my car.

Welcome to TGO

You may try (Master / Airtex - same company, different trade names) #E8094 which is rated 45-50 GPH gallons free flow and is good for stock TBI 11-15 PSI. I do not use Airtex pumps - I had good luck with Carter - P74017 pumps . Do not know about Delco external pumps....

//RF

I've used the P74222 Carter pump (it's about 70 bucks) and it works okay, but not as good as an in tank TPI or Vortech pump.

It is used factory on a 6.5 turbo diesel truck.

I've used a stock pump for a late 80's ford truck with the dual gas tanks. These pumps were external stock and supplied 42 psi abd enoug volume to feed a 351, it's fed my 300hp motor without a hickup.