Has any manufacture ever made an intake for a SBF that a QuadraJet carb would mount on...it?! (Is that a correct sentence??...I worry about such crap!!) Thanx in advance.
Holley Street Dominator...it's an older design, probably out of production, but if you google it you'll find a few pictures
Ford details are not part of my brain pan but check this page at the bottom. Forgive me if I'm off on this. If those are a Holley type bolt pattern maybe there's an adapter available?? https://www.summitracing.com/search...ford/carburetor-mounting/4-barrel-spread-bore
Offenhauser did in the Dual-Port very,very rare with the Quadrajet base. The Alliance Vendor Exeter Auto may have shown it in their online catalog at one time but they are no longer in business.
Ford themselves did! Lots of performance SBF sold in Australia with the Carter Thermoquad during the 1980's. The mounting footprint is basically the same. Jon.
My 429 CobraJet came from the factory with a Q-Jet. Apparently was necessary to meet Calif emissions. Maybe they did something similar with a SBF.
A Rochester Q-jet, never heard about any Carters though it's been mentioned. I stumbled on that little tidbit on the internet years back, about fell out of my chair when I read it. By my memory it had something to do with Holley not being able to fill Fords order in the timeframe required for production.
Only the SCJ 429’s had the Holley installed, the base 429 CJ used the Q-jet and I think it was Rochester that had issues keeping up so Carter built a lot of Quadrajets under contract to GM.
I never have seen a 429 with a quadrant but I remember them with an auto lite 4 barrel it looked similar to a Q-jet it was a spread bore just like a Q-jet
I had a 429 with a Quadrajet installed, and if I remember correctly, it had a tag on it that would signify that it was original. I can never access my Quadrajet book when I need it, but I believe it states in the book, that GM, Ford, and Chrysler, all used the Quadrajet in some of their models. Bob
I had a early 70's Lincoln Town Car with a 460 that had one. I may still have the intake here in the shed.
My records up through and including 1974: 1970, 1971 Ford Mercury 429 7040285, 7040286, 7040287, 7040288 There are 4 different numbers for A/T, S/T (Federal) and A/T, S/T (California) I have no record of any Chrysler or Lincoln using a Q-Jet, but this may have occurred 1975 or newer, as I do not have those records in my database. Ford used a Carter TQ on the 460 in 1974. These are quite scarce and quite in demand to replace the troublesome (because of ethanol) Autolite 4300. I have no record of a DOMESTIC SFB using a Q-Jet or TQ, but lots of performance Australian SFB used the spread-bore Carter TQ. Jon.
If you have the height, could you just use an adapter? Most times the adapter is to run a square flange carb on spread bore intake. But I think you could mount it essentially upside down and run spread bore carb on square flange intake? I'd have to look closer at an adapter to make sure, although in theory it should work I think.
My OT 85 Dodge van with 360 had a factory TQ.... Was only used one or two years just before they put injection on them.
The square->spread or spread->square adapters are NOT a good idea for performance, especially if one is using a stock intake. Look at the intake Deuces pictured in post 16. Basically, that Q-Jet was a 750 CFM (150 primary, and 600 secondary). Add an adapter with a 750 square-bore (375 primary, 375 secondary). The manifold allows 150 primary, the square-bore carb allows 375 secondary. The combination has been reduced to 525 CFM from 750 CFM. Using an open manifold is not quite so bad, but still nowhere near the original flow. Definitely not the way to improve performance. Jon.
I'll go with Jon on this. I am still working on my "Quadrajet-on-a-flathead" project with an adapter on a Sharp 4-BBL intake. Look at how far apart the primary throttle bores are. The airflow has to come out of the primaries and make a pretty sharp turn before turning again and going down the manifold. Given the nature of my project, I'm not concerned about some restriction in the airflow, but if you're looking for maximum performance, it's probably not the best situation.
There’s a lot of interesting info here. But back to the OP. Why, other than you have a QJ on the shelf? I personally really like them in OEM applications, and had a friend who could tune them quite well. But why on a sbf when there’s a lot of other options. What’s the motor spec’s and how are you driving it?
Why not ? A well setup Qjet is a fine carb. A spread bore adapter will bolt that on any holley bolt pattern intake. We used to run a cast iron bowtie intake with an adapter to bolt a Qjet on our round track cars. Qjet's were required by the rules on all GM cars.
Thanx for the info guyz! I know I've never seen an intake (for SBF) with quadrajet bolt pattern. I don't know....I've always liked the small primary HUGE secondary design of the Quadrajet and think it would make a "hotted-up" Ford really "tell-the-news"! Since I have a bare spot scrubbed on the underside of my hood(from the hold-down-stud) I don't have any room for a spacer/adapter. I guess I COULD "run-with-my-stuff-stick'in-out"(no hood) but then I need to watch the weather forcast before I take off to a cruise!!! I'll just live with it awhile longer, I guess Thanx 6sally6
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