were is the vaccume advance? is it the one closest to the manifild faceing the firewall?
My truck has a miss at low rpm but at 1/2 throttle it just dissaperes could this be it?

Miss might be timing messed up (stretch chain, mistimed, distriubtor needs cleaning/adjustment) or something else ignition related (worn cap, rotor, plugs).

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Casually looking for a Clifford hyperpak intake for cheap.

Or the vacuum pod coming on too soon at idle providing too much advance. The vacuum pod needs to be plugged into the ported vacuum fitting on the carb so it is not apply partial advance. If you have plugged into the manifold your getting full advance at idle.

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

a timing light will tell you what your advance is doing right away.

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I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

got it running much better my 2 mixture screws on my cartter bbd carb were set almost 3 turns out each. Now it's 13/4 and 2, it is running much better. On the highway my truck is pretty slow, i will give that vaccume pod a try tommorow.

Thanks for the reply's and diagram, had a fix vaccume's backwards.

ty

Big Carter BBD operation and repair manual (pdf)

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