Fuel Pump question
 

My fuel pump on my SB350 is leaking oil and gas. So I bought a new one that is suppose to be for a small block 350.

I got it in the other day and noticed that is has a slightly different layout. The one on the truck has a small nipple off the bottom that the line from the tank attaches to (pic 1).

The new one has a different layout. No nipple but two similar openings on the side (pic 2).

I've not swapped one of these out before but it seems pretty straight forward. I've read up on some installs online.

So, I'm hoping first that I didn't actually buy the wrong fuel pump and second if not which hole is the intake and which is the output hole?

I'll have to get me a new fitting to go in the intake side which should be no big deal.

Any advise?

Thanks!

Re: Fuel Pump question
 

The lower pic, you can clock that pump to your desired position, by removing the thru bolts and rotating the top from the bottom and reinstalling the base. be careful not to tear the rubber baffle in it...instructions found on line......
RE-POSITIONING THE LOWER PUMP BODY: The lower pump body may be re-positioned as needed to allow better alignment
of the fittings for specific applications. Referring to the exploded view on the following page, remove ten allen head screws from the
perimeter of the pump pulsator cover and separate lower fuel pump body from upper fuel pump body. Rotate lower pump body to
desired new position and start but do not fully tighten the ten allen head retaining screws. Before fully tightening these screws, the
rocker arm must be actuated to and held in the “full stroke” position. This is done to ensure that the diaphragm will be pulled to and
held in its maximum working (flexed) position while the retaining screws are torqued tight (20-25 in/lbs.). This procedure will ensure
against premature diaphragm wear and subsequent failure due to over-stretching of the diaphragm material when in the full stroke position.
Another by-product of an improperly set diaphragm is erratic fuel flow and pressure.
The ten allen head retainer screws should then be torqued to their 20-25 in/lbs. specification in a criss-cross or “star” pattern, to ensure
even, progressive tightening. CAUTION: Do not overtorque these allen capscrews or serious pump diaphragm damage will occur.
This procedure can be assisted by holding the fuel pump in a vise or appropriate fixture, and holding the rocker arm down with a pipe
or similar tool.

Re: Fuel Pump question
 

Also watch out for the little push rod that will slide out when you remove the old pump.

Re: Fuel Pump question
 

Use a bolt in the upper bolt hole in the front of the block will hold the pump rod in, finger tight only.......

Re: Fuel Pump question
 

Thanks guys. Am I correct in assuming the left side is intake and the right the output side?
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Re: Fuel Pump question
 

yes. That is correct.

Re: Fuel Pump question
 

Thanks!
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