Edelbrock 1405
Thread Starter
Instructor
Joined: Dec 2001
Posts: 225
Likes: 0
From: League City TX
Edelbrock 1405
I am 90% sold on an Edelbrock 1405 replacement of my QuadraJet. I figure once this is on I can play with rebuilding the quadrajet to learn more about them. In the mean time I want a fairly easy replacement.
Some questions for 1405 owners:
Will it fit on the stock intake with the stock hood?
Are you happy with the performance/power?
Some questions for 1405 owners:
Will it fit on the stock intake with the stock hood?
Are you happy with the performance/power?
Pro
Joined: Aug 1999
Posts: 749
Likes: 0
From: Perth,Western Australia,Australia
I went with the 1406,because it has the electric choke.Very happy with it,car starts better & idles better.If you are going from a Q-jet to a 1405 or 1406,you will need an adaptor plate,to go from spread bore to square bore,my spacer is 3/4". As for the air cleaner I am using one of these:
http://www.jegs.com/cgi-bin/ncommerc...15&prmenbr=361
You can probably find a better 2" air cleaner though.
Neil.
http://www.jegs.com/cgi-bin/ncommerc...15&prmenbr=361
You can probably find a better 2" air cleaner though.
Neil.
Instructor
Joined: Jul 2005
Posts: 246
Likes: 0
If you are just going to be driving the car in the spring/summer/fall months do you need an electric choke? If I get a carb without the electric choke does that just mean I have to sit in the car and play with the throttle to keep it running???
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Originally Posted by celeryman22
If you are just going to be driving the car in the spring/summer/fall months do you need an electric choke? If I get a carb without the electric choke does that just mean I have to sit in the car and play with the throttle to keep it running???
How well all of this works for you depends on how well the carb is working. If the carb is right, you should have a stable idle within about a half a minute, again, depending on how cold it gets where you live.
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
I used a 1405 on my Nova years ago and loved it. That car was very, VERY quick and extremely streetable with that carb on it. If I didn't have to smog my Qjet '76, I would put one back on this car too.
Instructor
Joined: Aug 2003
Posts: 111
Likes: 0
From: South-western Ontario
I put a 1405 + Edelbrock Performer on my '79 last year and am happy with the results. The carb has been running fine since then and I haven't had to adjust at all. It was a noticeable improvement over the qjet, but I'm sure that if I had re-built the original qjet carb and set to spec I would get the same result.
Thread Starter
Instructor
Joined: Dec 2001
Posts: 225
Likes: 0
From: League City TX
great info here .. how do you connect an electric choke?
I plan on moving back to houston soon and would be driving it in fairly warm weather all year round. Don't plan on driving much in the winter months as its a convertible.
what about hood clearance with a stock hood?
I plan on moving back to houston soon and would be driving it in fairly warm weather all year round. Don't plan on driving much in the winter months as its a convertible.
what about hood clearance with a stock hood?
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I'll stick with a well tuned Q-Jet.
Thread Starter
Instructor
Joined: Dec 2001
Posts: 225
Likes: 0
From: League City TX
well I just dont want to break anything. I have never touched an engine. I dont have car friends either, so I am going this alone with no guidance other than on here.
I am willing to learn, I just want to have it drivable from the get go, that way I can play with the q-jet and still be able to drive it.
I just removed the q-jet, it was much easier than I ever imagined. I started to strip the metal fuel line bolts, but finally got them off. The other 'trick' was the throttle linkage. I had it mostly off, not realizing the plastic part above the spring just pops off with a little urging. I was afraid of breaking it, or it would have been a 10 minute removal. I never in a million years thought it was that easy to remove it!! I would have done this 2 years ago instead of parking it for so long.
Well I am going to order a 1405 as it will be the easiest to replace. Bolt on and go. Meanwhile I am going to get a carb rebuild kit and tear into the qjet.
its horrible looking an d a lot of the parts stick, and others mechanical sections seem very loose. I am going to compare the areas to the new carb this weekend.
I am so proud of myself!!
I am willing to learn, I just want to have it drivable from the get go, that way I can play with the q-jet and still be able to drive it.
I just removed the q-jet, it was much easier than I ever imagined. I started to strip the metal fuel line bolts, but finally got them off. The other 'trick' was the throttle linkage. I had it mostly off, not realizing the plastic part above the spring just pops off with a little urging. I was afraid of breaking it, or it would have been a 10 minute removal. I never in a million years thought it was that easy to remove it!! I would have done this 2 years ago instead of parking it for so long.
Well I am going to order a 1405 as it will be the easiest to replace. Bolt on and go. Meanwhile I am going to get a carb rebuild kit and tear into the qjet.
its horrible looking an d a lot of the parts stick, and others mechanical sections seem very loose. I am going to compare the areas to the new carb this weekend.
I am so proud of myself!!
Pro
Joined: Jun 2002
Posts: 538
Likes: 7
From: Johnsonville Wi
1405
I run a 1406 on a zz3 crate motor and the operation is great. BUT, there's more diff. between a 1405 and a 1406 than the choke. The 1405 is set up for "performance" and the 1406 for "economy". Since it's easier to put the 1405 parts (jets / springs / needles) into the 1406 than it is too add the electric choke to the 1405, I went 1406 and 1405 performance parts. I highly recommend the e choke for driveability.
As I recall, I used the excellent tuning book that comes with the eddy to make a couple more small changes. If you decide to go the same route, post back and I'll give you p/n's for the final tune (you may need no changes or may well be tickled with the stock 1406 setup.) The electric choke hookup is one simple wire to hot (ignition on) and I would suggest an inline fuse.
Daffy
As I recall, I used the excellent tuning book that comes with the eddy to make a couple more small changes. If you decide to go the same route, post back and I'll give you p/n's for the final tune (you may need no changes or may well be tickled with the stock 1406 setup.) The electric choke hookup is one simple wire to hot (ignition on) and I would suggest an inline fuse.
Daffy
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
I would recommend getting the tunning kit. Whether you get the 1405 or 1406 model get the 1405 tunning kit because it is more for performance.
The jets and springs are not bad to install. The tuning kit will allow you to set it up so that it can rev high RPM with out fuel starvation and for tuning for low end power too.
The jets and springs are not bad to install. The tuning kit will allow you to set it up so that it can rev high RPM with out fuel starvation and for tuning for low end power too.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
That Qjet is a complicated carb.
Well a rebuild can become as complicated as u make it. I suggest a simplified rebuild as in the Chevy shop manual or a Chiltons manual.
I can recommend a good book for reference by Doug Roe on Rochester carbs called: Rochester Carburetors
But this book gets too detailed for beginners - though u do need to use caution in dissasembly with the internal feed and bleed tubes.
I would have recommended a rebuild by lars (v8fastcars@msn.com) and for $100 its the best carb deal on this planet. But i think u are past that decision now and this is really what hot rodding is about and kinda fun when u have the time.
BTW i have a spare Qjet sitting in a bucket waiting for me too - as soon as my 2 Holley spreadbores are rebuilt.
Good luck. cardo0
I can recommend a good book for reference by Doug Roe on Rochester carbs called: Rochester Carburetors
But this book gets too detailed for beginners - though u do need to use caution in dissasembly with the internal feed and bleed tubes.I would have recommended a rebuild by lars (v8fastcars@msn.com) and for $100 its the best carb deal on this planet. But i think u are past that decision now and this is really what hot rodding is about and kinda fun when u have the time.
BTW i have a spare Qjet sitting in a bucket waiting for me too - as soon as my 2 Holley spreadbores are rebuilt.
Good luck. cardo0
Racer
Joined: Dec 2001
Posts: 328
Likes: 0
From: Dallas County Texas
You're going to love that AFB.....
They are just wonderful carbs....they waste a fair amount of gas....
they aren't as viciously responsive as a perfectly tuned Holley design, but they are reliable and dependable.
I've never used the choke on one! WAIT! I did on one....but didn't notice a difference. Twenty five degree mornings....pump it 5-10 times, start it, rev it up and down from 1200-1800 for 30-45 secs, drive.
Easiest carb in the world to adjust too.
they aren't as viciously responsive as a perfectly tuned Holley design, but they are reliable and dependable.
I've never used the choke on one! WAIT! I did on one....but didn't notice a difference. Twenty five degree mornings....pump it 5-10 times, start it, rev it up and down from 1200-1800 for 30-45 secs, drive.
Easiest carb in the world to adjust too.
Intermediate
Joined: Jun 2004
Posts: 48
Likes: 0
From: Orlando FL
The only problem I had with the 1405 I had in a Camaro I used to own was caused by excessive fuel pressure. The needle valves that shut off fuel flow into the reservoir are flat like a pencil eraser rather than other carb styles that have pointed seal that fits inside the port. If you run more than 5-7 psi the pressure will exceed the carb's sealing ability flooding the reservoir and stalling the engine. It shouldn't be a problem with a stock pump but it's good info to know in case you run into a problem with the engine bogging and stalling as soon as you hit the gas.