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Old 03-08-2002, 05:02 AM
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How are you measuring the RPM?
And, is the tach accurate?

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Old 03-08-2002, 09:32 PM
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Check The Float Level! Always look for the most simple things don't over think the problem. Remeber KISS, (keep it simple stupid). I like the response about the pin hole in the fuel line, that happened to me too. You can put a little air pressure in the fuel tank filler neck with an air blower wrapped with a rag, and listen very carefully. Have someone looking over and under the car to see if you have any air or fuel leaking. if it is a cracked line it tends to be up high over the axel, and it will leak air when you pressurize the system. Don't over do the pressure! 15 PSI is more than enough. Control it at the regulator, you don't want to break the welds in the tank! And don't do that with a full tank, you might get back wash. Be carefull! Open the garage door! You get the picture.
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Old 03-09-2002, 05:21 AM
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Check your float level again on the secondary side. Your carb isn't working when opened to the point the secondaries come in. If fuel pressure is good and there is fuel in the float bowl I would suspect a blocked fuel passage in the secongary metering block, or the wrong gasket used between the metering block and throttle body, When you open up the secondaries with no exta fuel,you've just created a big air leak and there isn't enough fuel for the engine to run.
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Old 03-09-2002, 07:43 PM
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Liquid Larry may be on the right track! Since the motor revs on the primaries only, you have proved the 'mechanicals' for a baseline. Don't rule out the 'fuel line air leak', but I'd definitely take another look at the secondary side of that Holley.

Shine'em and Drive'em
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