Dorton 350cfm jetting

**engineczar** · 07-06-2011, 05:41 PM

Getting ready to run a Dorton 350cfm 2bbl Carb in 2.3 Ford Ministock. Motor is oval port heads unported..460 lift solid lifter Cam. Early carb intake. 10:1 compression. Turns 6800 rpms. The stock jetting out of the box is 77 which seems big as the jetting in a stock 7448 Holley is a 61 jet. Running it in the shop it seems rich. We won't get a chance to hook it up to our O2 meter before we race. Anyone got any baseline jetting info?

**wreckerman1969** · 07-06-2011, 06:04 PM

i have a lot more motor and rpm s than u do mine is a carb shop 350 it has 59 jets in it turn the big 2.5 8500 no problems

**car62** · 07-07-2011, 02:40 AM

i run .485 hydraulic stock size valves 7600rpm mine has PV block and i run 65/66 jets

**longhornracer** · 07-07-2011, 03:39 AM

I got a pretty hot soild lift motor 2.3 bottom end turning around 8400 and im in the lower 70's with mine and mine is a lil rich..

**engineczar** · 07-08-2011, 07:14 AM

I ended up putting in 68 jets and probably could have gone lower. From what I know the carb is calibrated for use in a V8 which is probably why the stock size are 77's. I just jetted it like a 7448 with a plugged power valve. The car's going back on the dyno this week so I'll get a chance to put an O2 sensor on it to get it right.