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73-87 Chevy _ GMC Trucks => Performance => Topic started by: project85 on April 14, 2011, 06:58:28 pm

Title: Carb Question
Post by: project85 on April 14, 2011, 06:58:28 pm

i have two holley carbs. i have a dual feed 4150, which is a 600cfm street avenger, on my 350 engine now. it doesn't run right and hesitates and actually has started not wanting to idle. the other carb is a single feed 4160, also a 600cfm on another motor that has been sitting for awhile. i am curious if there is any difference functionally between the two? i don't know if one has an advantage over the other. i want to rebuild one of them so i want to make sure i put the work into the right one.

thanks

Title: Re: Carb Question
Post by: 1980c10 on April 14, 2011, 07:20:53 pm

I would think the 600sa would have better throttle response due to the dual feed and it sounds like your fuel line is already set up.

Title: Re: Carb Question
Post by: project85 on April 14, 2011, 07:34:06 pm

also does anyone have a good online source for rebuilding a holley carb?

Title: Re: Carb Question
Post by: werewolfx13 on April 15, 2011, 10:55:05 pm

just pick up a genuine holley rebuild kit for your carb model. A 4150 kit should fit the 4160 too. I used 4150 kits on my 1850 whenever it needed rebuilt, which was on a regular basis on my old gmc. Autozone should have a 4150 kit in stock, if not, o'reilly should.