difference between walbro pumps

[ABLITZ]

what is the difference between a walbro GSS346 and a GSS307.i have a GSS346 in it now.should i leave it in or put the GSS307 in?which is better?

 

[TheObiJuan]

ask ron gregory.
syclone@home.com

 

[ABLITZ]

that e-mail doesnt work,but thats ok i got another addy off his site.need an answer kinda quick, got the tank down, gas all over the place .







TIA!!

 

[TheObiJuan]

hahha, lol. i know that feeling too.

 

[Christian Dionne]

What's a 346?

A 340 is the high pressure 255 liter/hour. The 307 used to be the same as the 340 except for lower bypass pressure. The new 307 has a different armature and some other things. The flow charts are available on gnttype.org comparing the two.

If the 346 is not a 340 than I'd say go with the 307. It good for at least 550HP according to Joe and Harry at PTE. HTH,

 

[ABLITZ]

thats the number right on the pump(GSS346).dunno maybe an older model??wish i could put the 307 on there BUT i cant get the filter that goes on the bottem of the pump on.its not tapered so i cant slide it on.





forgot to add:it also has holley stamped above where it says walbro.

 

[ABLITZ]

ok got an answer from Ron Gregory.
the GSS346 is the same exact pump as the GSS307.only difference is one(GSS346) has holley stamped on it.

 

[TheObiJuan]

thanks for clearing that up
jas' should add the pump numbers to his list