Edelbrock Carb Question

[AceX]

I'm looking around at parts for my new motor and I'm getting frustrated trying to find a good carb that is still 50 state legal. The #1400 from Edelbrock looked promising but it's a swing and a miss because "not for computer controlled engines"

I'm going to be using manifold #3701 and need a carb that will work. It doesn't have to make a ton of power. I would be surprised if this new motor makes 250hp.

Thanks for the help guys...

[Jonboy]

You might want to try JET or Sean Murphy for a CCC Quadrajet. They showed Sean Murphy (I am pretty sure that's right...) going through one in Car Craft a few months ago.

edit- Found it. Try this: http://www.smicarburetor.com/products/sfID1/28/sfID2/9

[68 TT]

Originally Posted by AceX

I'm looking around at parts for my new motor and I'm getting frustrated trying to find a good carb that is still 50 state legal. The #1400 from Edelbrock looked promising but it's a swing and a miss because "not for computer controlled engines"

I'm going to be using manifold #3701 and need a carb that will work. It doesn't have to make a ton of power. I would be surprised if this new motor makes 250hp.

Thanks for the help guys...

I looked for one when I was building my 83 Z/28 back in the mid 90's. Only Holley made one that was computer controlled but it was $1300 for the carburetor. I don't think they even make it any more.

Even a rebuilt CCC Q-Jet ran close to $400 plus a $75 core charge.

I went the EFI route after getting three rebuilt CCC Q-Jet's that didn't work as well as my original one and losing my core carburetor. I got a wrecked TPI IROC for $1000 and did the drivetrain transplant, stuck my CCC 305 in the IROC and sold it for $500.

Maybe an EFI swap is the way to go if you have to pass emissions.

[shrtbx]

I went through the same thing trying to find a 50 state legal carb as well. Your best bet is to go with a rebuilt or new q-jet. If you look on ebay one will pop up at a good price.

[68 TT]

You can always get an older truck so you can do what you want and give the emissions inspector the middle finger at the same time. It would probably cost less than the emissions legal carburetor.

Transfer all the nice parts from your newer truck onto the older one if you want or if you like the looks / function better.

[AceX]

Originally Posted by 68 TT

You can always get an older truck so you can do what you want and give the emissions inspector the middle finger at the same time. It would probably cost less than the emissions legal carburetor.

Transfer all the nice parts from your newer truck onto the older one if you want or if you like the looks / function better.

If that sort of solution were even plausible I would never have gotten rid of the 400+hp LSX motor I had.

[68 TT]

Originally Posted by AceX

If that sort of solution were even plausible I would never have gotten rid of the 400+hp LSX motor I had.

75 & earlier is pre-smog in CA so why not track down a 73 to 75 truck?

[Pyrotechnic]

What motor came in the truck, and did it have the computer controlled Q-Jet ?

What are you putting in it now ?

Also what transmission do you have ? I remember you saying something awhile back that the transmission had to have been offered with the motor you are putting in ?

[GMC Guy]

i highly recommend finding a solid 73-75 and swapping all your stuff over to it. with the exception of the front end, i think everything will bolt up. i'm doing a cab swap from a 74 onto my 79. i know it's going to take some time, but it'll be worth it when i don't need to pass emissions

[AceX]

Can't do another truck and swap parts. To mch time, money, etc. Plus my truck has alot of sentimental value.

I'm swapping in a standard small block crate 350 and the factory 700R4. I also went looking around at serp. kits earlier but remebered that I have that pesky AIR pump to deal with. Would the 89-91 'burban serp. drives have the AIR pump?

[68 TT]

Originally Posted by AceX

Can't do another truck and swap parts. To mch time, money, etc. Plus my truck has alot of sentimental value.

I'm swapping in a standard small block crate 350 and the factory 700R4. I also went looking around at serp. kits earlier but remebered that I have that pesky AIR pump to deal with. Would the 89-91 'burban serp. drives have the AIR pump?

My 90's serpentine system had the mounting location for the AIR pump but was not equipped with one so it should work for you as long as you can find the right vintage AIR pump to fit the bracket.

The ones on the S-10 Blazer with 4.3 are exactly the same so that increases your gene pool to find a good setup that will work for you.

What about a TBI swap? Could end up being easier to come up with the parts vs. a good functional CCC Q-Jet.

[Jonboy]

68 TT took the words out of my mouth. Maybe an aftermarket TBI setup with a C.A.R.B. exemption?

[AceX]

There's a couple TBI systems out there that look exactly like a carb. I think I could configure the emissions equip. to look functional and update the cat to make it pas the sniffer.

What about a rebuilt carb from a 350?

[68 TT]

Originally Posted by AceX

There's a couple TBI systems out there that look exactly like a carb. I think I could configure the emissions equip. to look functional and update the cat to make it pas the sniffer.

What about a rebuilt carb from a 350?

It's still going to be the CCC Q-Jet. I doubt it is any different than the 305 version other than jetting. You may be able to find a used one that you can just use to get the thing past smog for now and put what you want on there after you pass.

Maybe a regular Q-Jet will do if they don't pull the air cleaner off. As long as you have a cat and a functional AIR pump you can meet the early emissions standards with a regular Q-Jet.

I wonder if you could dummy up a mixture control solenoid connector on a regular Q-Jet and fool the inpspector into thinking you had the right carb?

[AceX]

IIRC that last time it was smogged the guy didn't pull the air cleaner. I think your idea could work, or maybe I could recalibrate the carb's jetting? I know next to squat about Q-jets...

[Pyrotechnic]

Someone asked a similar question awhile back. Theoretically, you should be able to swap primary jets and metering rods in the Q-Jet to make it work with the 350. Not sure if the little computer is any different though but I'm 99% sure the primary jets and/or metering rods would be different.

Also, have you considered a TBI setup off one of these trucks ? An 87-91 TBI fuel injection system came with a 700R4 and have a serpentine setup. If you could find a donor truck it would be a mostly straight forward swap. Should pass the sniffer test like a champ every time and the TBI system gets great gas mileage.

[Malo83]

Originally Posted by AceX

IIRC that last time it was smogged the guy didn't pull the air cleaner. I think your idea could work, or maybe I could recalibrate the carb's jetting? I know next to squat about Q-jets...

Give Sean a call he's a Master with Qjets


http://www.smicarburetor.com/

[AceX]

Sounds like the metering and jets work might do the trick and ould giv me a chance to rebuild the carb at the same time.

I'll give Sean @ SMI a try as well. I've rebuilt older Rochester and Zenith carbs before but nothing with electric choke or any sort of computer control.

Life woud be so much easier if I didn't hav to worry about a visual check...