Re: Quadrajet Question??? CFM??
Right on, the commonly available Q-Jets all have the 750 or 800 cfm bore size. Some of the late '60s GM V8 cars used a restrictor that would set how far the secondary throttle plate would open to limit the horsepower, since the same engine block was used in a higher horsepower model. I just picked up a Qjet off ebay from a '68 454 Buick for $50, in working condition, which I am going to rebuild and use on my Jeep. There is really no need to buy a new one if you have the skill to rebuild, which really only requires patience and the ability to follow directions. Get a book. The nice thing about Q-jets is they are really well designed and rely on measuring engine vacuum for metering fuel. This means that they don't care what the displacement of the engine is, as long as it isn't too big for the cfm rating of the carb. The only re-jetting you should have to do is for altitude. You can also adjust things like partial- throttle enrichment, but you shouldn't have to.
This is differant than the holley design, which has to be closely matched to the engine size.
The best thing I can recommend is to get a book for your carb, it will save you lots of hassle and teach you a lot. All that for less than $20 is a bargain.
1955 Willys CJ5 Buick 225 V6 160HP 270ft-lbs, T90 trans, Warn OD, PTO winch, Spicer 18 T Case, RS9000's, Dana 25F/ 44R,
5.38:1 gears, 11" brakes, Bestop Supertop, Hurculiner