Pulled my gas tank and fuel pump, check this out...

["Turbo-T"]

When I bought this car back last October, I was not sure what type of pump I had, neither did the previous two owners.

Plus there was not a hot wire kit on my car (I added one later) so I thought for sure it had the stock fuel pump in it and was the possible cause of some of the KR problems I had.

Well folks this is what I found....

Looks like it says "Holley by Walbro".

Hhhmm....and yet everyone I have talked to has said this HAS to have the hot wire kit....I wonder how it ever worked right w/o it?

NOW, I also noticed my pick up assembly still has what I believe is the pulsator on it....

Now, I have some questions to ask...

1. With the pic of the pump I have shown, can you tell me anything on it? Is it a 255 lph pump?

2. What does the pulsator do? Should I leave it on? or remove it?

3. If I do remove it, would it be worth anything?


Thanks!

 

[GNRick]

Try sending the pics to Mike at Full Throttle and see what he thinks. Sorry I can't be of any help.

 

[QUIP'6']

Pumps in Holley Kits
The Holley fuel pump kits contain Walbro fuel pumps with Holley-only part numbers on 'em.

Holley Kit Holley Pump Number
12-900 GSS344
12-901 GSS344
12-902 GSS346
12-903 GSS346M
12-904 GSS346M
12-905 GSS344M
12-906 GSS348
12-907 GSS348
12-908 GSS345
12-909 GSS347
12-910 GSS348
12-911 GSS347
12-913 GSS347
12-914 GSS349M
12-915 GSS349
12-916 GSS351
12-917 GSS345
12-918 GSS351
12-919 GSS350

Holley-to-Walbro cross reference
If you remove the Holley logo from their fuel pumps, they are the same as the Walbro high performance pumps.

Holley Pump Number Walbro Pump Number Pump Type
GSS344(M) GSS242(M) 190 ltr/hr
GSS345 GSS250 190 ltr/hr
GSS346(M) GSS307(M) 255 ltr/hr
GSS347 GSS315 255 ltr/hr
GSS348 GSS317 255 ltr/hr
GSS349(M) GSS340(M) high-pressure 255
GSS350 GSS341 high-pressure 255
GSS351 GSS342 high-pressure 255


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[Rodney87GN]

Just toss the pulsator in the trash and use a short piece of high pressure hose. Also cut off the neck down portion of the tube before you install that hose.

 

["Turbo-T"]

Thanks I will do just that. My only question is what is the pulsator's job?

 

[boostingbuick]

Noise reduction.

 

[Rodney87GN]

I believe it just dampens the pulsations from the pump to make it quieter, or something like that...not 100% sure though.

 

["Turbo-T"]

Ah I see.....

I guess the fuel pump must be pretty noisy when in operation?

Wonder if it's worth anything?