Run power to EL choke from IGN tap on fuse block

Consider using Permatex black ultra RTV on the china walls on block to intake vs whatever you call "liquid gasket". Let the motor sit overnight before starting so RTV can cure

IDK about quadra jet but when I went from 2 brl to 4 brl Edelbrock on my 327 I had to get a longer kick down rod if its an automatic car. You ay need some adaptive accelerator linkage/mounts to be happy with the Quad, IDK but that stuff is readily available

Put a fuel filter between fuel pump and carb

You will enjoy the increased performance with the 4 brl

 

Yeah I have the same permatex you mentioned. It's an automatic with a powerglide. I'm not sure about the kick down rod, or what it even is honestly. The only connections to the stock 2 barrel are the throttle linkage, the choke, and the vacuum advance for the distributor. The vacuum line to the transmission comes straight off the intake manifold.

 

What do you expect to gain by installing. The Qjet?

the 2 barrel you have is most likely optimized for you 307

 

I eventually want to swap to EFI. I was in no rush, but a friend had some spare parts, so I figured I'd do it for fun and a little added pep.

 

IDK what 2 brl the 69 307 used but my 327 used a Rochester so I needed a longer throttle linkage rod to reach a 4 brl. Maybe the QJet is different. Compare to where your linkage is to where it needs to be on QJet. If a longer one, the typical Camaro part places will have one. (read get a 69 4 brl QJet throttle rod if needed)

Just cap any unused vac ports you don't use

 

Sounds pretty much the same. The 2 barrel is also a Rochester on mine, so I may run into the same issue. Thanks for the heads up

 

In the long run you will be happier with your two barrel. Super simple and bullet proof. I am a big Q-jet fan, but most of them have been misadjusted in almost every way possible by guys trying to "improve" them. I just finished working one over that was misadjusted in every way possible.
But, if you are hell bent on going Q-jet, at least get an intake and carb from a 68 or 69. The 68 intake will need the two small exhaust crossover holes under the carb plugged with 7/16 soft plugs. Not sure on the 69. Easy to do.
Do not use that boat anchor of an intake and carb that includes an EGR valve.
JMHO.

 

FWIW I put a Edelbrock performer intake and 1406 (600cfm) carb on my 210 hp 327 and it really made a big performance difference. Did not foul plugs and ran great. Its all in the tuning like any carb but the 1406 was just right out of the box after basic adjustments

QJet with iron intake would not be my choice but agree whatever you do, block off the exhaust x over port on the manifold. Edelbrock makes intake gaskets with the metal inserts for their Performer manifolds

 

I do appreciate the input. Didn't know anything about the crossover port, so I'll look more into that.

Mostly, this is an experiment because I have the parts and the time to do it. If it fails, I have the stock intake and carb to fall back on. I was gonna ride with the 2 barrel until I did an EFI conversion later down the road, but I have access to the free parts, and some curiosity to see how it works out.

The 2 barrel is currently running like crap, and needs some love anyway. So worst case scenario, I'm right back where I started. Best case, I'm set up with the 4 barrel intake for the eventual EFI conversion OR I like the 4 barrel setup enough that I decide to forgo it all together.

 

Leave the 2 barrel on your 307 and just

Just as Lynn wrote, I would not use that boat anchor intake either. What are the reasons for EFI?

 

Curious why you are looking at EFI.

A well tuned carb will provide very reliable service and power. Seems like a lot of money to sink into a 307.

 

I understand the pros and cons of carburetors vs EFI. For what I want out of the car, it may be the best choice. It's the original motor so, as far as why so much for a 307, I'd like to keep it alive while just getting a little more out of it.

Nothing is set in stone. I've owned this car for only a couple of months, and I'm tweaking it to what I want, while I also unravel the mess of the abandoned restoration from the previous owner

 

I understand the pros and cons of carburetors vs EFI. For what I want out of the car, it may be the best choice. It's the original motor so, as far as why so much for a 307, I'd like to keep it alive while just getting a little more out of it.

Nothing is set in stone. I've owned this car for only a couple of months, and I'm tweaking it to what I want, while I also unravel the mess of the abandoned restoration from the previous owner

I'm going out on a limb and saying the juice isn't worth the squeeze for the change. You're looking for a solution to a problem that doesn't exist.

 

I am in the middle of a 2bbl rebuild to install on my original 327. it is amazing the differences between how a Qjet mounts and a 2 bbl. One of the things I have learned is GM created TWO 2GV carbs. A small bore one for 307/327 and a large bore for a 350. Parts houses just say a rebuild kit is for a 2GV. I had to look at pictures of the gaskets on Rock Auto and compare the old gaskets to get a match.

Another thing I just found out is the large holes on the throttle arm is supposed to have a rubber grommet w a plastic sleeve. I have to source that now as my carbs are missing that. Fun!

 

I am in the middle of a 2bbl rebuild to install on my original 327. it is amazing the differences between how a Qjet mounts and a 2 bbl. One of the things I have learned is GM created TWO 2GV carbs. A small bore one for 307/327 and a large bore for a 350. Parts houses just say a rebuild kit is for a 2GV. I had to look at pictures of the gaskets on Rock Auto and compare the old gaskets to get a match.

Another thing I just found out is the large holes on the throttle arm is supposed to have a rubber grommet w a plastic sleeve. I have to source that now as my carbs are missing that. Fun!

There are two sites that I have used for years that have all parts for darn near every Rochester carb out there. I've called and talked to techs as well and are very helpful. If its a Rochester carb, these are the go to folks:

Rochester Quadrajet Carburetor Parts

www.carburetor-parts.com

Or

Carburetor Parts & Kits for Carter, Ford Motorcraft, Holley & Rochester Carburetors

 

I’m a purist at heart…. But if you’re not worried about that aspect.. I say go for it …as you said yourself it can only improve your situation as you said the 2brl is trashed…as far as the kick down is concerned if you have one is you don’t have to have it …you can manually downshift if it’s necessary ….

 

I went through with the swap yesterday. The throttle response is much better now. Manually pinned the choke open for now, until I get power run to it. A little timing adjustment, and it runs a lot better than it did before. A little fine tuning on the Quadrajet, and it will be perfect.

The one issue did in fact end up being the kick down rod, but the problem is actually upshifting. With the 2 barrel rod being too short, the powerglide wanted to stay in 1st the whole time, and not shift into high gear. Finding the replacement was easy, and I already ordered one.

And to the suggestion that the 307 never came with a 4 barrel, that was wrong. My stock air cleaner fits right onto it because it actually had an adapter piece for the 2 barrel, and that came right off.

 

Yeah you need that longer rod for trans....or splice in a piece of rod to the 2 brl one if you can weld

You have vacuum hose going to modulator on trans, right?

 

Yup I ordered the new one, just waiting for it to come in the mail. And yeah, I got everything connected the same as before. Transmission and brake booster to the manifold, and distributor advance to the carburetor. Also had a PCV that ties into the carb. Had to get a little creative, but got that on there too.

 

Maybe I missed it but, What goes in has to come out. How about the exhaust? 4Bbl need more axhaust than a 2 Bbl. Not that a 307 puts out that much.

 

All in due time. I'm enjoying trying to add some extra pep to this otherwise underpowered motor, as it's original.

Right now, the 4bbl came off of a 305, so it's already tuned for a smaller motor. Minimal adjustments were required to get it working better for mine. Once I get around to doing more to the motor, I'll bump up the output from the carb. I was in no rush to do the intake and carb, but some good friends donated some spare parts, so we decided to put it together and see how it worked out.

I'm glad I went with it, because it definitely seems to have woken the old girl up a little bit

 

Other than gasket and the trans rod, it was free, and I am sure it helps wake up the 307. When it dies, just buy a crate motor from BPE.