Chevy 350 Carburetor??

hidesertfj40 · 10-08-07, 11:28 AM

I'm finally shopping for a replacement carb for my stock 1972 Corvette 350 engine (Edelbroch Performer manifold). Has anyone done the research into which manufacturer and size works best in fj40??

Happy Columbus Day!

FJBEAR · 10-08-07, 11:32 AM

Quote:

Originally Posted by hidesertfj40

I'm finally shopping for a replacement carb for my stock 1972 Corvette 350 engine (Edelbroch Performer manifold). Has anyone done the research into which manufacturer and size works best in fj40??

Happy Columbus Day!

not in a 40, but quadra junks (quadra jet) 4 barrells usually work pretty good on 350's.

for a bit more coin, you can go with holley's 650's or 750's. I would think though the 650 would be fine for powering the 40 while also lending itself to better MPG's

I had a holley 750 double pumper on an Ford 360 once and I always had a hard time keeping enough fuel running through the bowls. It always wanted more than I wanted to give to it!

idus25 · 10-08-07, 11:39 AM

holley 4150 truck avenger

hidesertfj40 · 10-08-07, 11:40 AM

What about the edelbrock 600cfms? Anyone running one of those??

Enigma · 10-08-07, 11:47 AM

This subject has been beaten to death badly many times. Holleys suck ass for off road use unless you have them modified for such. Quadrajet seems to be the winner carb wise from most of the posts on this subject, and speaking from personal experence, it has worked the best in my 350 fj40.
And mileage wise, the theory I once heard was that Qjets were better for mileage due to the small primaries which is used most of the time, saving the large secondaries to really drink it down when needed.

hidesertfj40 · 10-08-07, 11:51 AM

I guess edelbrock is out of the running??

osagecruiser · 10-08-07, 12:01 PM

chebby 283...edlebrock torker II with a holley truck avenger 400 cfm...so far very pleased with the performance of both

osagecruiser

bandy rooster · 10-08-07, 01:47 PM

another vote for quadrajet... thats what i got..

dr.serna · 10-08-07, 01:59 PM

I have a Quadrajet in my Goodwrench350, and think is the best choice for this engines, never failed.

hidesertfj40 · 10-08-07, 02:07 PM

Hey guys,
I really appreciate the input. I've talked to several people and have gotten several differenct answers. My thoughts are; the factory QJ carb cant be that bad if Gm used em on their Corvettes? Now... can anyone recommend a decent carb rebuilder in SOCAL or NORCAL???

pbgbottle · 10-08-07, 02:07 PM

I switched from Edelbrock ,to Quadrajet ,it's like night and day between the two ,Edelbrock wins hands down on the street ,i loved it .the motor had alot more get up and go ,but for offroad and off camber situations .the Quadrajet wins everytime . i miss the umph of the Edelbrock , but the Quadrajet is what i have kept on it for the past few years .The Quadrajet works flawlessly offroad .

inkpot · 10-08-07, 02:19 PM

Quote:

Originally Posted by hidesertfj40

I guess edelbrock is out of the running??

Howdy! I am running the Edlebrock/Carter 500 cfm w electric choke. Less cfm usually means better low rpm performance traded for a little less top end. Quadrajets were factory equipment on Chevy for many years. Probably the easiest to bolt on and drive, especially since that's what you have now. I assume it is beyond rebuild? Just about any carb will need some adjustments or mods. Edlebrock seems to be the least expensive, and simplest to work on. Get one with spring loaded floats, block off the crossover passage in the rear of the body, and run a variable pressure regulator with a gauge. I run about 6 psi on the street, but about 3 in the rocks. Mine runs good under 500 rpm for those "delicate moments" when you really wish you had put in a crawler box! I hate smoking the clutch so I'm not banging in the rocks. John

Deep South Cruisers · 10-08-07, 02:26 PM

I am also running a Edelbrock 600 cfm on a 283 after my Holley 2bbl gave up for good.

I still think a quadrajet would be better in offroad conditions.

hidesertfj40 · 10-08-07, 02:26 PM

Oh Sh_t! I'm really getting confused now. Anyone else got anything else to say? I think I'm gonna have to put all the replies in a hat and pull out the lucky one... they all sound good.

camcruiser13 · 10-08-07, 06:36 PM

qjet

hidesertfj40 · 10-09-07, 08:27 AM

Hey Camcruiser13,

Is there a model # or year that works better? My Qjet is from a 1972 350...

FJ40_owner · 10-09-07, 10:30 AM

Quote:

Originally Posted by pbgbottle

I switched from Edelbrock ,to Quadrajet ,it's like night and day between the two ,Edelbrock wins hands down on the street ,i loved it .the motor had alot more get up and go ,but for offroad and off camber situations .the Quadrajet wins everytime . i miss the umph of the Edelbrock , but the Quadrajet is what i have kept on it for the past few years .The Quadrajet works flawlessly offroad .

x1000

I had an Edellbrock on my 40. Kicked ass on the street. ANY off cambor and it would load up and flood.

My Ebrock is for sale on this board under my user name. My asking price is a steal.

pb4ugo · 10-09-07, 11:08 AM

Quote:

Originally Posted by hidesertfj40

Hey Camcruiser13,

Is there a model # or year that works better? My Qjet is from a 1972 350...

Take the numbers off the side of your carb and go get a rebuild kit & carb cleaner and rebuild it. Or find someone local to rebuild it for you. It should be fine.

inkpot · 10-09-07, 11:56 AM

Quote:

Originally Posted by FJ40_owner

x1000

I had an Edellbrock on my 40. Kicked ass on the street. ANY off cambor and it would load up and flood.

My Ebrock is for sale on this board under my user name. My asking price is a steal.

Howdy! That is a very common problem on the Edlebroch/Carter setup. It takes about 15 minutes and 5 cents worth f fuel line to fix. Just remove the top plate from the carb, insert some fuel line vertically into the long passage that connects the two float chambers, then cut off the fuel line flush with the top of the main body casting. It does not have to be 100% fuel proof, just has to stop the rush of fuel from running lefty-righty on off camber trails. Best 5 cents I ever spent. John

cruiser boy · 10-09-07, 12:26 PM

If you want to actually drive it on the trail there is nothing better than an old Q-jet. I have built alot of carbs for my buddies that even spent the big bucks on the so called trck carb and they are all running the q-jet again......Rod.....

pbgbottle · 10-09-07, 03:06 PM

where does vacuum secondaries and mechanical secondaries fit in this topic ,and does it make a difference? just thinking out loud , doesn't the Q-jet only sucks what it needs . versus mechanical always opening up no matter what .

inkpot · 10-09-07, 03:46 PM

Quote:

Originally Posted by pbgbottle

where does vacuum secondaries and mechanical secondaries fit in this topic ,and does it make a difference? just thinking out loud , doesn't the Q-jet only sucks what it needs . versus mechanical always opening up no matter what .

Howdy! Good question. As I recollect, vacuum setup is less aggressive, and perhaps more economical. The mechanical ones are adjustable, and you can feel them when they "kick in". Back in the 60's when I was a crazy hotrodder, I spent a lot of time working on Rochester Quadrajets. Nowdays, I think they are actually made by Edelbrock. Still pretty much the same as the originals. Both old and new are a darn good carb, but a lot more parts and $$$ than my Carterbrock. John

Downey · 10-09-07, 04:36 PM

If you can't have fuel injection, then Q-jet all the way. Everything that was mentioned above (that is good and holy) about the Q-jet is true!!!!!

mdonivan · 10-09-07, 10:05 PM

I've got a 71 with a q-jet. Love it in the rocks....has been very reliable. My buddy found a retired mechanic here in the San Diego area that rebuilds old carbs on the side. You take it off your rig, give it to him and he rebuilds it and gets it back to you. If you don't want to tackle the rebuild yourself, PM me and I will get a hold of my buddy and try and get the guys info. The guy's rebuilt the carb off my buds '68 Ford F250 and his 1980 Dodge 440 powered motorhome. They both run well. Good luck!

drohweder · 10-08-08, 09:38 PM

Stick with a quadrajet if you take it offroad. If you have one on there already send it to recarbco for a killer rebuild. Can't beat a q-jet.

Dan

spdwaver1 · 10-08-08, 10:17 PM

I have a Qjet on a 327 and agree with the above pertaining to Qjets. I would go Qjet or injected, and nothing in between.

camcruiser13 · 10-08-08, 10:28 PM

Quote:

Originally Posted by bandy rooster

another vote for quadrajet... thats what i got..

x2

impressed with it. truck aveneger carb is over rated and priced. not worth it

seth · 10-08-08, 10:32 PM

Quote:

Originally Posted by hidesertfj40

Hey guys,
I really appreciate the input. I've talked to several people and have gotten several differenct answers. My thoughts are; the factory QJ carb cant be that bad if Gm used em on their Corvettes? Now... can anyone recommend a decent carb rebuilder in SOCAL or NORCAL???

I just used this place to rebuild my quadrajet Automotive Carburetor Exchange & Repair Service Inc. - Los Angeles, CA- Automotive Carburetor Exchange Inc. Rebuild, tune, Carb Specialists

I think I ended up paying less than $200...just drove in, and they had it done in about 3 hours. Looks nice, runs much better.

RMC73FJ40 · 10-09-08, 05:32 AM

I just replaced our Holley 4160 with a Edelbrock 1406...600CFM with Electric Choke.....for $179 from Summit. Search for part Number EDL-9906........factory refurb.

We're running Edelbrock Performer intake too........anybody need a used Edelbrock Torker II?

radioridge · 10-09-08, 08:29 AM

another vote for the Q-jet. i started with a holley, then an edelbrock both did well on the street. the holley didnt like to run up hill, the edelbrock didnt like off camber. ive had the quadrajet on for the least amount of time but i have to say its a big improvement off-road.