Car won't rev high

[Lou72240Z]

I just rebuilding the carbs on my 72 z (car sat for 30 years), but now, I cant' get it to rev over 4000 RPM's. It won't free rev or while I am driving. It idles fine, but it is lacking the power it should have. I tried reseeting the float levels, made sure the lines and clear. When I try lifting the barrels, the front one almost stalls, the rear has no effect. When I place the flow meter over each carb, the fron one gives a good reading, but the back one makes the engine rev higher. This tells me that the rar carb is running lean, but I can't get it to increase the gas flow. Any advice?

[LeonV]

Sounds like you need to set up your carbs right. Go through the procedure in the FSM, Haynes, or ZTherapy video. They'll all get you close.

[Bruce Palmer]

Hard to diagnose someone else's work on unknown quality carbs from 2000 miles away so will only offer up that a thorough check out of the distributor might be in order...... I know we've had many comments about how our TUNE-UP dvd has solved many a "carb" problem.....

[Wade Nelson]

I'd be looking at the ignition timing and advance unit.