Thread: small idol issue

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Ive still got a small idol issue with my 460 mustang. I switched the fuel back to 110 octane last year because the previous owner was running E85. And the carb was not set up with the proper metering blocks for E85, and it would not idol on its own. I can get it to idol now but only at 1800 to 2000 rpm. Its a 4150 double pumper, with a proform main body. Its jetted correctly the plugs look nice and tan colored all around.

I was considering upgrading to these proform metering blocks, has anyone had experienced the use of these?
http://www.jegs.com/i/Proform/778/67165C/10002/-1

Ive got a high lift cam, .670 in and out. A bit stout for street strip but thats what ive got to work with. does anyone think this is a good choice to try next, or have any other ideas? As always thanks in advance for any insight into this problem.