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347 44 IDF choke size?
Hello.
I'm in the process of doing a initial setup on my 44 IDF carbs. I will use them on a 347 with 10.3:1 compression, Comp Cams hydraulic roller, duration at 0.50" 224 int/232 exh, valve lift 0.555 int/0.565 exh, 112 degrees lobe separation, operating range 2200 rpm-6200 rpm. The current chokes in the carbs is 36 mm, looking in the Weber tuning manual they seem to small. I prefer a good street driveability before high rpm performance. What do you think I should go for, trying the current 36 mm chokes or going for 38 or 40 mm chokes? If someone has a motor with similar specs, please share your carb settings. Regards Orjan.🙂 |
I have a 331, slightly smaller cam than yours. Running 44IDF with the 36 chokes. Dynoed 308 hp at the wheels. This car has beautiful street manners, no bucking, no reversion, fuel injection-like smoothness.
Running stock jetting other than idle jets, using 52 idle jets. My engine was very sensitive to idle jet selection. |
Hello.
Thank you for your input👍🙂, I guess the best is to start with the current jetting I have and go from there. |
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