Carburetor
- Thread starter Rudy913
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You'll need a square bore/spread bore adapter, a adaptor harness for the electric choke (could be a home made on if you're good with wiring), cut the fuel line & adapt that to fit the carb, get a throttle arm stud to connect your throttle cable. Big thing is if that carb is good & don't need a rebuild then is it already jetted to work with a 305. My opinion would be sticking with the Qjet & have it serviced/rebuilt or atleast do a good trouble shooting to make sure it's bad.
not trying to hijack this post but i have question. i have a edellbrock carb on mount on a performer intake on a 71 olds 455 in gbody . seem some member don't think highly of edelbrock carb. the car is in the process of being restored so i haven driven it so i can't say how it perform on the road .so what can be done to improve on the bad qualities this carb has . i really don't want to buy a new carb. any add vise will be appreciated
My experience with E carbs are that some just never run right, no matter how much you screw with them. Some are just lemons out of the box.
Others seem to run okay on the just about anything. My dad was famous for ripping out any Holley or Qjet and bolting in a Carter. He didn't understand how Holleys or Qjets worked and didn't care to learn.
Carters (Edelbrocks) are universal by application. They still need to be optimized for 99% of what they get bolted to. Sure, they might run okay, but not right.
Qjets are application specific. The best running carb for a 305 Chevy or a 455 Olds is the Qjet that it was born with. The 2nd best is a Qjet that's been calibrated for said specific engine.
Now, one more time, what is your car doing that makes you think your Qjet needs to be replaced?
Others seem to run okay on the just about anything. My dad was famous for ripping out any Holley or Qjet and bolting in a Carter. He didn't understand how Holleys or Qjets worked and didn't care to learn.
Carters (Edelbrocks) are universal by application. They still need to be optimized for 99% of what they get bolted to. Sure, they might run okay, but not right.
Qjets are application specific. The best running carb for a 305 Chevy or a 455 Olds is the Qjet that it was born with. The 2nd best is a Qjet that's been calibrated for said specific engine.
Now, one more time, what is your car doing that makes you think your Qjet needs to be replaced?
Greetings Rudy & all; The pictures you posted with the carb on a yellow rag is a AFB. Please note that Edelbrock carbs are the exact design! Look closely, what do you see that is different? Little or nothing. Plus early E carbs are off the same tooling (?) as the last AFB's. I'm not quite sure how Edelbrock got the rights to produce the copies of the AFB form Carter, but it happen back a number of years (90's?). The design dates to the late 50's & Gm asked the designers to do better & the Q Jet was borne. The AFB now Edelbrock has few pluses, if any. The Q Jet you may be the best metering carb on the planet?? And only displaced by Holley's design because it flows way more equal front to back & has a much smother air flow at wide open! And Holley's design does per date AFB's & Q-Jets, but is much easer to tune, plus they kept twitting the design to the point that I've read a new 3 circuit unit can produce results as good as electronic Fuel Inj. I haven't seen this first hand, I've only read about this new step Holley has taken. RE -BUILD the Q-Jet, my $.02 cents, Ole' Bob.
I never had an AFB style carb run worth a flip on an Olds. I ended up going to a Holley spreadbore or back to a Qjet. The plus to a Carter/E-brock is the ability to change metering rods rather quickly, and they do pretty much stay where they're set, but they also had a lot of extra flashing where it didn't need to be and other machining problems. At least the ones I had back in the late 70s/early 80s did. I did trade one of my Holleys for a Thermo-quad once, thinking the spreadbore design would be better without having to use an adapter. It ran ok, but not great, and still had to fiddle with it to get it there. It felt like bolting on a Holley sideways though. Those things were huge side to side.
My dad had a Chevy pickup truck back in the 70s that had a CARTER Quadrajet on it. Yup, for a brief time, Carter supplied GM with Qjets. It ran pretty good. I used it practicing for my driver's license. I also learned how to do long posi-traction burnouts with that truck...
My dad had a Chevy pickup truck back in the 70s that had a CARTER Quadrajet on it. Yup, for a brief time, Carter supplied GM with Qjets. It ran pretty good. I used it practicing for my driver's license. I also learned how to do long posi-traction burnouts with that truck...
They seem to run especially bad on the Olds V8. Nearly every poor running car had an Edelbrock carb on Classic Olds. Some spent many hours no avail.I never had an AFB style carb run worth a flip on an Olds. I ended up going to a Holley spreadbore or back to a Qjet. The plus to a Carter/E-brock is the ability to change metering rods rather quickly, and they do pretty much stay where they're set, but they also had a lot of extra flashing where it didn't need to be and other machining problems. At least the ones I had back in the late 70s/early 80s did. I did trade one of my Holleys for a Thermo-quad once, thinking the spreadbore design would be better without having to use an adapter. It ran ok, but not great, and still had to fiddle with it to get it there. It felt like bolting on a Holley sideways though. Those things were huge side to side.
My dad had a Chevy pickup truck back in the 70s that had a CARTER Quadrajet on it. Yup, for a brief time, Carter supplied GM with Qjets. It ran pretty good. I used it practicing for my driver's license. I also learned how to do long posi-traction burnouts with that truck...
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