found a carb at the junkyard on a half off day for 30 dollars. i think it was recently rebuilt. it has that silver color to it unlike the usual gold color of the holleys. pulled it off of a ford f250 or similar. looked like an FE not sure what. maybe a 390? its a holley 9510. it has these tubes coming out of the float bowls and i dont know what they are. i circled them in red. also there are some other vacuum fittings circled in green. would it be ok if i just capped those? i was going to use the bowls from a 4160. anybody know of any problems with that? the photos are not my carb, just one similar with the same tubes coming out of the bowls**
that's a holley 4180 style carb. excellent carb... circled in red are vents from the fuel bowl. cap them. don't know if other bowls are compatible. circled in green are vacuum connections, bottom one is pcv, top is dizzy vacuum advance. google on that carb - the mixture screws are on the bottom, behind plugs. you have to drill these out!
You'd have a serious problem if the fuel lines were connected to vac/vent ports... Fuel line connects to right front corner on a 45* angle...
$30 ? You still paid too much. You're better off spending $100-150 on a Holley that's nearly new that someone else gave up on.
i removed the tubes. how do i go about plugging the holes? it looked super clean when i opened it up. those photos arent of my carb.
not sure how you removed them.. but it may be best to just avoid all this hassle and use your 4160 bowls instead. As long as both models are using the secondary metering plate.. not "block" like the 4150's use.. then the transfer tube will be the correct length to swap them over.
Don't plug those bowl vents! If you do, the carb will never run right. Better to connect them with a hose, and use a "T" in the center to the bottom of the air cleaner. I ran one of those carbs on my car for years. They are about 600-650 CFM, and work great. Only thing, kits for them are high, and I'm not sure how many Holley parts interchange. If you just want a carb to put on and not worry with adjusting all the time, they are fine.
I don't see how plugging those would cause issue when that carb looks to have the traditional style top vents too.
I don't know where you're seeing traditional style vents? These are smog carbs, with a closed vent system, and the vent tubes went to the charcoal canister or the air cleaner. Maybe I'm missing something? I know on mine, if you plugged them, it would kill the engine in just a few seconds.
not trying to argue at all.. especially if you have first hand experience with this carb. All that I've run across are stripped of usable parts for my Holley bin(which is overflowing now because I hoarded too much) and then tossed to the side in favor of cleaner non-smog designs. I'm just going by the pics which seem to show the vents on top and these as secondary vents. Here's more pic's with better views. http://www.google.com/imgres?q=holley+9510&start=211&sa=X&biw=1536&bih=687&tbm=isch&tbnid=16WYk4bxI-_rKM:&imgrefurl=http://vb.foureyedpride.com/showthread.php%3Ft%3D129650&docid=Q-vdC_CpLwJASM&imgurl=http://i1108.photobucket.com/albums/h413/C_Drapel/IMAG0619.jpg&w=1023&h=612&ei=dF68UdWQJKSYygG13YDYCg&zoom=1&iact=rc&dur=94&page=6&tbnh=135&tbnw=229&ndsp=52&ved=1t:429,r:34,s:200,i:106&tx=122&ty=80 http://www.google.com/imgres?q=holl...6&tbnw=173&ndsp=42&ved=1t:429,r:21,s:300,i:67 personally.. I'm along the same line of thinking as baddad on this one and by the time you freshen it up to be reliable.. you could have just bought another more fitting design in the first place. Plus, I'm guessing the carb likely came off a larger motor and won't be calibrated correctly for this little motor anyways.. unless the little detail that it's a 351ci sized motor eluded me once again. I've been known to fly through too quickly and miss some of the little details sometimes. lol
The bowl vents are the straight up tubes in the choke housing (primary side, secondary vent is in the same position in the top of the throttle body at the rear) The tube coming from the primary bowl is also a vent too, but it's for the closed loop emissions system to capture the fuel fumes as the fuel evaporates in the bowl. Some earlier Holley's had a spring loaded pop off valve here. Neither are needed for proper functioning as long as the vent tubes in the throttle body are present.
Brain fart! That's what I was thinking of I guess, the old style. Been a while since I got to fool with a new Holley!
