misstransam

I just had my 350 engine rebuild and it includes a 600cfm edelbrock 4bbl carb. I was tuning it a bit and jets are fine and gasket came with carb and fits the manifold well. This car is not vacuum advanced. The idle screw (left screw facing car) works fine as i did the bog test and did my recommended turn(s). The mixing screw on right does absolutely nothing,i can unwind and wind it both ways as far as it goes and nothing. The plugged vacuum holes under the screws have suction. I am stumped on this. Is this a defect or my error?

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don't sweat the petty things, pet the sweaty things.

Damon

Doesn't sound like anything you did wrong. If one works properly and the other one has no effect that's almost certainly either debris inside the carb or something wrong in it's manufacture.

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90 Chevy 454SS truck. Out with the wheezing TBI dumptruck engine, in with a nasty little AFR-headed solid cammed 454 taken "back to basics" with big Holley 4bbl, single plane intake, big headers, loud exhaust, and nothing remotely close to emissions compliance or good fuel economy. Loud, dangerous, anti-social and lots of fun.

78 Malibu. Inherited from my Grandomther with only 35K on the odo! 13.4 @ 107 with mild N/A 383. With Weiand 142 blower installed....... not quite so mild. Orignially shooting for 11.99 on street tires, but mid 12s appears to be the best it's gonna do- nowhere near enough traction.

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