i think you are on the right track. i followed along on you other post. sorry i did not chime in. all along i thought it was tuning of the carb. i also believe the clifford is a good intake. yes it has large runners and may not work the best on a small motor, like a 194-230. 250 -292 should have no problems. heating the intake is a major thing that has to be done for proper operation. i know you did it. next it is like you have found, tuning is the only way to make it run right. it could be lean as you suspect, but also keep in mind too much fuel gives the same effect. goodluck and keep on tuning. tom
