Restoring a 84 T/A with the standard 305. I know , I know I hsould have put in a 350 but the 305 is staying for other reasons. I hope to do away with the computer on the car so I want to replace the Quadrajet with an Edelbrock carb and intake. What model carb should I consider for the stock built 305 bored 30 over? Also if I do away with the computer will it effect any of my guages in the dash? Also will I have to replace my distributor?

Thanks for the help

 

First you need to justify removing the computer controlled equipment.

Good luck with that.

 

I did the same thing - I had no trouble with guages or stuff, but mine was an 82 - I ripped out the distributer, stuck a regular HEI in.

then put on a performer intake - and a 750 holley - I think my 750 holley is too big - not that it bogs or anything I just feel that I would of been better served with a 600 holley.

 

Not sure what justification you mean. This car was a $50 car in pretty bad shape. I figure it will be easier to do away with the computer and car than trying to restore them to working order. Emissions is not a problem here yet either.

 

FUBAR is one justification. Not wanting to understand it isn't a very good one.

Do you want a new carb, or will used do? What are you intending to do with the car? What transmission does it have, or are you going to use?

A q-jet is probably the best dual-purpose street/performance carb every conceived. They aren't too hard to come by, Edelbrock even makes new ones. They adjust their flow based on how much the engine can use.

Edlelbrock is probably the least expensive aftermarket carb. But, it won't fit directly on a stock manifold - an adapter or aftermarket intake is required. I've never had one, some people swear by them, others swear at them.

Holley is probably the best well known performance carb out there. They can be street friendly, and are the most popular at the track.

You will need a distributor with vacuum/mechanical advance mechanisms to properly run with a non-computerized carb.

 

Oh, the best street/performance q-jet is the computer controlled version. You won't get better fuel economy than you can with it, it self adjusts to changing conditions, and doesn't hold back performance (compared to a non-computer q-jet).

 

Hoosier Bob,

Restoring & Removing are two entirely different paths. If you are really talking about "restoring" you would want to keep original equipment?

My son and I have a properly installed & adjusted CCC-Q-Jet on his Z-28 and we couldn't be happier. My son's car (with it's CCC-Q-Jet) is IMPO:
#1 - Legal & will pass an inspection
#2 - Reliable
#3 - Better on Fuel
#4 - Less expensive than a changeover to aftermarket.
#5 - Quite possibly offer BETTER PERFORMANCE than an equally equipped Camaro with a Holley or Edelbroke. Assuming the only difference is the Carb.....

Sincerely,
Kurt

 

ya think? Wouldn't they have virtually the same performance capabilities?



I'd recommend an Edelbrock performer RPM, or performer RPM air gap intake manifold. With a q-jet.

 

Last I checked the RPM Air Gap didn't come in a spreadbore configuration.

 

Alas, Edelbrock has ceased making new Qjets! It is oh so sad but true

 

I'll have to admit it's been awhile since I checked. But, it appears the only Edelbrock q-jets available from Summit are remanufactured. So, sounds like it's true.

(I'll also have to admit I wasn't totally impressed by the two I had.)

 

Ok, so I bought a carb kit and am rebuilding the quadrajet. I have rebuilt them in the past so it is not like I have never done a Q-jet. My next quesitons are if I keep the Q-jet, do I have to keep the charcoal canister? the AIR system? I am wanting to remove as much as I can. I know I will have to keep the O2 sensor and my new headers have a plug for it.

Thanks again for all your tips and help.

 

You don't have to keep the A.I.R. system. The canister provides the vent for the gas tank, as well as absorbing vapors from the carb. If you eliminate it and plug the lines, you need to get a vented gas cap. Personally, I don't think it hurts anything, although all the hoses and valves are kind of ugly. I keep threatening to move that control valve away from the engine, but haven't gotten all the vacuum hoses required to make the move.