[WANTED] 650 CFM Holley double pumper

[win38mag]

ok here we go ! I am looking for a 650 cfm holley double pumper or vaccum secondary carb for my, being rebuilt 340/.040 over engine. I'm told the existing 3353-5 780 cfm is overfueling , or will be on the new engine. it will work but is too big ! So anyone got one to sell or want to swap ?

 

[pishta]

780 will work, have you adjusted the vacuum secondary spring? That is free....What wrong with its performance?

 

[68 340]

ok here we go ! I am looking for a 650 cfm holley double pumper or vaccum secondary carb for my, being rebuilt 340/.040 over engine. I'm told the existing 3353-5 780 cfm is overfueling , or will be on the new engine. it will work but is too big ! So anyone got one to sell or want to swap ?

I have a 650 CFM Holley double pumper spread bore carb. It worked very well when it was on my 340. I have not used the carb in 30 plus years, so it will require a new gasket and rebuild kit. I will sell it for $50 if you are interested.

 

[brian6pac]

I have a 650 4777 but if I were you I would run the 780, who told you it was to big? I run 6 packs on all my 340's 1350 cfm! they are also mechanical carbs, so 780 is not to much.