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Old 07-31-2013, 06:45 PM   #1
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Carb help

Have a Holley carb with 80457-8 and 3131 on the horn and having sum problems but need to kno what carb first.
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Old 07-31-2013, 10:48 PM   #2
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600 CFM Four Barrel Street Carburetor
PART #: 0-80457S

Found it on Google in about 10 seconds.
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Old 07-31-2013, 11:33 PM   #3
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I seen that also but the 0- is what threw me off as it wasn't stamped like the s as well but thanks for clearing that up for me, I kno nothing about carbs and now have one on my daily and it needs sum work
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Old 08-01-2013, 06:40 AM   #4
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now have one on my daily and it needs sum work

I remember when that came out in the early 70s. It soon became everyones favorite replacement for the factory 4-bbl on the 289/302 motors. The previous 750/780s were too much carb and the 600 fit the bill really nice. A kit should be inexpensive and easy to find. They are simple to rebuild with generally good results. Go for it.
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Old 08-01-2013, 11:32 AM   #5
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Well I'm looking to get a new carb all together and a intake if the money's there. Everyone says Holley is **** so I was thinking maybe a edelbrock with a air gap style intake. I'm hoping this will clear up the miss I get while cruising
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Old 08-01-2013, 11:47 AM   #6
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Well I'm looking to get a new carb all together and a intake if the money's there. Everyone says Holley is **** so I was thinking maybe a edelbrock with a air gap style intake. I'm hoping this will clear up the miss I get while cruising.

Holley is just older tech and they had a tendency to leak causing fuel starvation. Edelbrock basically modernized the old Carter AFB design and seems to be the darling of todays carbureted engines. I personally always disliked Carter's metering rod system but also disliked Holley's side mounted floats which could result in no fuel or flooding (depending on turn direction)on severe cornering. The later Holley center-mounted floats fixed that problem.

As for a miss caused by a carburetor, that is somewhat rare because a miss is a problem with one cylinder usually caused by lack of or weak spark or a burned valve. Carbs by function distribute fuel evenly through the manifold. A carb will cause a cut-out (all cylinders) during hard acceleration if the fuel distribution is lacking.
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Old 08-01-2013, 12:09 PM   #7
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Ok I see wat your saying on the miss an cut out. Just the other day I dumped it pretty hard and she fell on her face for a sec but picke back up. I feel like my firing order may be a lil off or sumthing tho. I kno on the distrib itself part of it broke off from it bein old and there's exposed wires. Also the first plug on driver side has a white residue
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Old 08-01-2013, 01:09 PM   #8
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Ok I see wat your saying on the miss an cut out. Just the other day I dumped it pretty hard and she fell on her face for a sec but picke back up. I feel like my firing order may be a lil off or sumthing tho. I kno on the distrib itself part of it broke off from it bein old and there's exposed wires. Also the first plug on driver side has a white residue

I'll almost guarantee that a new cap and rotor will fix your problem.
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Old 08-01-2013, 02:33 PM   #9
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The cap is a lil lose and below it on the dis. Itself is partly broken like the plastic. Now if I take the clips off and take off the cap will anything fall out of place r can I just take it off look an put it back?
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Old 08-01-2013, 03:04 PM   #10
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The cap is a lil lose and below it on the dis. Itself is partly broken like the plastic. Now if I take the clips off and take off the cap will anything fall out of place r can I just take it off look an put it back?

Nothing should fall out. If it does, you've really got trouble. If you cap is broken, it will cause arching and a definite miss.
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Old 08-01-2013, 03:09 PM   #11
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Alright ill check into that, now I just pulled 4 plug th first 2 on each side. The first one have a lil white resadue on them and wat looks to be a lil oil. Te second 2 had no white and had more oil/gas on them. When it comes to motors I kno how to take apart put together and fix alot of stuff but the knowledge part I lack a lil. So any help is much appreciated
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Old 08-01-2013, 03:22 PM   #12
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Alright ill check into that, now I just pulled 4 plug th first 2 on each side. The first one have a lil white resadue on them and wat looks to be a lil oil. Te second 2 had no white and had more oil/gas on them. When it comes to motors I kno how to take apart put together and fix alot of stuff but the knowledge part I lack a lil. So any help is much appreciated

You've never mentioned what model car/engine you have. I assume by your avatar it is in the 79-82 age bracket which should use the old standard dist cap that Ford had for 30 years.

The white on the plugs means it is running a bit lean while the black/oily means rich and not burning the fuel well. Uneven plugs like this indicate a bad Distributor Cap. Run down and pick up a new one and a matching rotor. Points and condenser also. You need what we used to call a tune-up, much different and more simple than the "tunes" of today. No idea what they cost nowadays but it should be cheap compared to the results you should see. When swapping out do not change your wires until the new cap is in place and make sure you keep the firing order correct. Make sure you push the wire terminals tightly into the new cap. When done, you have to reset your timing. Good luck.

If after all this, and you have a newer model with electronic everything, I may not have been of much help.
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Old 08-01-2013, 03:34 PM   #13
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It's a 85 gt. not sure if its the oe motor but its soposed to have a ecam an gears. Honestly it pulls alot harder then my past ecam cars, I can take a pic of the cap if that would help any but other then the miss it pulls hard. A guy on a big harly was messin with me the other night guessing cuz I stole the spot light at the gas station lol but he rod my *** for a while and tryed to get around me after turning at a red light, he pinned it as I caught 2nd and spanked his ***. He kept goin when I let off but was surprised how much the car pulled him
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Old 08-01-2013, 03:40 PM   #14
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I can take a pic of the cap if that would help

My biggest concern for you is the price for an e-cap is almost $100 while the old style is about $15.
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Old 08-01-2013, 03:49 PM   #15
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Now what is a e cap?
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Old 08-01-2013, 03:55 PM   #16
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E-cap is for electronic ignition. Here are images of conventional and electronic ignition dist caps.
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Old 08-01-2013, 05:45 PM   #17
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Yeah I've never had a car with the first one but a few with that msd cap. So far I'm needing the cap button wires and a timing light. But idk how to read a vac adv or tune it
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Old 08-01-2013, 05:50 PM   #18
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I actually found the cap an button from the second pic for $31.99 at autozone
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Old 08-01-2013, 07:16 PM   #19
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They are usually described as distributor caps, not E caps
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Old 08-01-2013, 11:32 PM   #20
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They are usually described as distributor caps, not E caps

True, that was to distinguish the two from each other.

---------- Post added at 11:32 PM ---------- Previous post was at 11:30 PM ----------

But idk how to read a vac adv or tune it

Not sure what you mean here. You don't read a vac adv, you disconnect the vacuum line from it when you set the timing.
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Old 08-01-2013, 11:47 PM   #21
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Oh, cool learned something new ^_^
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