Hi all, I got a good deal on a pair of weber 42 dcnf carbs. I'd like to put one on my 4bbl offenhauser intake for my slant, but I'm kinda lost on what choke sizes,jets, air correctors,etc. to start out with. The 225 is stock on the bottom end. The head has been cut .080",it has a 210/214@.050 108 lsa cam, headers and a single 2.5" exhaust. I doubt the car will ever see over 4k rpms, but it does has 3.55 gears and 26" tires, so freeway speeds are still in the 3200-3500rpm range. Thanks for your time!

Those carbs are usually used on intakes that feed one cylinder per barrel. There are some chevy guys that have used a dcnf on a 6 cylinder and those jettings should be close.

Check out this thread.
https://www.speed-talk.com/forum/viewtopic.php?t=59058

4th post is a guy running DCNF's on a six.

Brandon

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