LAD 5241: Did you replace the shaft bushings yourself, or sent it out?

If yourself, can you provide the pertinent part # info and any procedure details? Thanks!

I believe the TQ can be tuned to just about any combination. However, having said that, the more radical you get in the cam selection the harder of a time you are going to have in trying to get the card to respond to the engine vacum signal changes.

My base for this statement: I've been using these things for years and currently run the aftermarket 9800 series (the one with the attached electric choke on the side). It took some work to get the idle mixture screws to actually respond, so literally the engine runs differently as you turn the screws. Previously in my combo (238/244 @0.050 duration hydraulic flat tappet cam) only the idle speed screw did anything. That cam is pulling only about 6-7" of vacum though.

Dave Emanuel's book is a great reference if you are new to these carbs and are going to work on them (ISBN 0-931472-11-3).

I have a nice Carter tech book on this carb, but it's too big to attach, so IM me and we can exchange through email.

Spread bore or EFI, why not both:
Sniper EFI Quadrajet





I'm thinking of going with one of these on the 440 in my wagon, likely on top of a Holley SD intake.

Nice except for the $1800 price with pump and extras.

To youz who like the sounds that Plastic Fantastic producers ... you need that new and improved air valve tool to get the bestest tUnEs !

And it probably don't have that TQ howl

That's an interesting question.

I has always assumed it was a function of the LARGE secondaries. So I wouldn't be surprised if this produced a similar effect...Q-Jets had some of that. But nothing barks quite like a TQ.

Howl ... bark !! ...

Even IF that Sniper EFI delivered any real benefit over a Street Demon, there is no way it can possibly deliver 6 times the benefits over the Street Demon which is how much more it costs. Plus the extra labor.

I have said this before, The only guys that dismiss the Street Demon for our mostly stock and mostly street cars, are guys that haven't tried one.

Or wants the TQ sound.

The AVS2 (650CFM) I just installed on a 383 does a pretty good impersonation of a T-quad's secondaries-open sound.
I'll do a separate thread on it for anyone interested.

One of the things that I dig most about my old stuff is that they're not efi, computer controlled, technology dependant. Sure, there are times when I gotta pop the hood to get one started but I'll take that over wrestling with a smart phone app any day. As for something that sounds like a TQ, I'm thinking the thing that comes closest is a TQ.

Mandatory picture...

I like this one

WHERE are those T shirts ??

I got a dozen or so of these off eBay some years back

[quote LAD 5241: Did you replace the shaft bushings yourself, or sent it out?

If yourself, can you provide the pertinent part # info and any procedure details? Thanks! [/quote]

Yep bought a kit with the ream and the bushes. Disassemble the carb, and you can use the ream in reverse in the drill chuck and the straight shaft on the ream is used as a guide in the throttle bores to enable you to ream it straight and true.

Then loctite the new bushes and drive them in - I used a bolt with the correct OD and the threads cut off to use it as a bush driver.

Worked like a charm

https://www.youtube.com/watch?v=UvHIWqdJX8s

https://www.ebay.com/itm/3-8-Throttle-Shaft-Bushing-repair-Worn-Carburetor-contain-Reamer-16-pcs-Bushing/232906517346?hash=item363a4f6b62:g:JXQAAOSwFSNcAdk3

How much slop was there in that shaft ?

Not huge slop Doc, but it was there; I tested it and it had a whistle at idle that was the shaft for sure.

The shafts themselves were in good shape however.

Throttle shaft slop is not usually a problem unless the carburetor is a high mileage unit or someone used throttle springs with too much pressure causing the bores to become egg-shaped, typically most evident on the driver side. This is why my process includes re-bushed bores with every carb, its a simple procedure to eliminate any potential slop issues.