I'm swapping from a 2.8 to a 350... The guy I was talking to was under the impression that you can just run a mechanical fuel pump... Is this true? or do you need to mess with the old fuel pump in the tank?

If already posted please link me.

 

what are you doing for fuel? carb, tpi, tbi, ? Will make a big difference

 

sorry, carbed 350... I believe the engine is from a 78 Chevy? not exactly sure... the only thing stock is block and the pistons.

 

depends on what type of pump is in the tank-port
injected engines have a two-stage turbine/roller pump
as stock-you cannot pull fuel through these without
running the pump.TBI and CFI use a two stage turbine
pump-you CAN pull fuel through these with the pump
inactive(done it)Certain carbed engines have a low
power single stage turbine pump-no regulator needed.
F/I pumps can be used with a regulator to feed a carb.