Hey folks,

Looking for a 4bbl carb for my '72 delta 88 with a 455. The current one needs to go. Summit has remanufactured ones for a couple hundy but I'd rather not spend that much right now. Anyone got a spare laying around?

--
Dante

 

Why does it need to go?

- Eric

 

Because it'll need too much work to rebuild. Also, the carb number is 17057553, which I can't find reliable info that it was used in '72 cars. Seems like it was replaced at some point.

 

Seems to me rebuilding a carburetor always takes the same amount of work: Disassemble, Clean, Reassemble, Adjust.

As for the number, it looks like it was used on 1977 California, air conditioned Olds smallblocks.
Since you're using it on a '72 455, which is larger and did not have EGR, it's probably running lean compared to the original.

Is your engine modified or original, as this may affect your choice of carburetors.

- Eric

 

http://quadrajetparts.com/decode-you...retor-t-5.html

Is this page accurate? If so, man, is this carb wrong...

 

My engine is bone stock. Auto transmission. Right now the thing is not running and it blows fuel up the top. If I'm gonna spend time rebuilding it, might as well get a carb that's correct for my car.

 

I would agree. When you get it running, it may run better with a pre-'73 carb. (though with all of the variables involved, including general engine wear, who knows?).

Welcome to ClassicOlds.

- Eric

 

I think I have a 73 Pontiac carb not ready to run it's been sitting many years

 

Would it fit an olds 455? I'm not knowledgeable when it comes to interchangeability for these parts.

 

Any QuadraJet will bolt on (all except for Chebby and early '66 Olds will have the fuel inlet in the same place), but jetting and other specs will be different for big and small blocks, as well as for different emission configurations, and, to a lesser extent, different Divisions.

- Eric

 

Good to know. I'm not particularly interested in keeping it "CA standard" as it's smog-free, but I'd like something that'll make my 455 run good. Ideally I'd like a working carb, not necessarily new, but a rebuildable carb that won't require parts outside the regular kits would work too.

 

I can pull numbers tomorrow, but you might be able to get a used edlebrock or holly and rebuild it. edlebrock is super easy, but seems like 50% rather go with holly

 

The only problem with changing to a Holley or an Edelbrock is it won't directly bolt to a stock manifold, they are square bore. An adapter would be required. Imho you probably ought to stick with the Rochester.

 

Can you explain this a bit more I have a edee on my stock 330 with no spacer ?

 

Your year is different and yours came with a squarebore carb. His is a spreadbore and will require an adapter. Take a look at the manifold on your 455 and you'll see.

 

Thats right.the edelbrock carb is a carter afb it will bolt up to the q-jet intake but the throttle plates will not open.The pre 66 330 used the 4gc aka 4 jet that is square bore and the afb or edelbrock will work.I'd stick with the q-jet.

 

Yeah I'm sticking with Qjets. It's a fine carburetor when properly rebuilt, and doesn't require me to do any voodoo with intake manifold and/or fuel line.

 

You might save yourself a step in the process by checking with a restoration source and see if they have one to sell. People on this site speak very highly of Sparky's and I had a great restoration done for me by Bob Stone of Classic Carbs.

 

Ask John (2blu442). He's got everything.

- Eric

 

John is great to deal with BTW.

 

X3 great guy fast shipping

 

How much might you be willing to pay I may get a few in a some boxes of parts I should be getting in the /ext 2_4 weeks

 

Here is the numbers on the one I have
null-10.jpg
If I recall its 73 Pontiac

 

17054779 = post 75 carburetor. If those are the numbers, in fact.

 

Well I lost an auction for a '71 qjet tonight (it went for $107 shipped) so I'll contact 2blu442 and call up Sparky in the morning to see if he got something as well. Looks like I ain't getting out of this bind on the cheap.

 

You should be rebuilding any carb that has sat any time at all. To correctly do that you need to epoxy the plugs and possibly rebush the throttle shaft so it will not leak due to wear.

Qjets are great carbs when set up correctly

 

I have 2 complete 72 455 motors, one out of an 88 and other out of a 98 and if I remember correctly, both have the same number carb, 7042251, I will have to check.

 

Cool, let me know if you're willing to part with a carb.

 

I have a reman in a box all things are there needs to be rebuilt but nothings stuck my dads asking asking 80 plus shipping is that resonable

 

Only the early carbs ('66 and maybe some '67} had the well plug leakage problem, and epoxy is not a permanent fix for these - new spun-in plugs is.

- Eric