AMEN to what Larry said. Put on a Carter AVS, once adjusted you shouldn't have to touch it for many, many thousands of miles. I have done it to several that came with Hollys, couldn't wait to 'throw' them away. Good luck. Gerry Steinberg Arizona (80 degrees) ----- Original Message ----- From: "Laurence G. Johnson" <laurence_g_johnson@xxxx> To: <jlsavard@xxxx>; <Chrysler300@xxxxxxxxxxxxxxx> Sent: Sunday, May 11, 2003 10:56 AM Subject: Re: Fwd: [Chrysler300] carburetor > Joe, > This carb represents one of the first attempt to meet the newly enacted (at > that time) smog regulations. The one I had was a disaster. I know my way > around a Holley carb pretty well and I never did get this one to perform > anywhere near satisfactorally. The metering circuits (idle, main, primary > and secondary) are calibrated to run very lean. Mine typically bucked and > surged at part throttle while crusing and on acceleration would actually > slow down when the secondary barrels opened. This carb has secondary > metering plate (Holley 4160) rather than a metering block with removable > jets (Holley model 4150) and the plates are difficult to find and categorize > for fuel delivery. > > Improving the performance of this carb is far more complex then simply > changing jets and power valves and would involve extensive changes in > jetting, air bleeds, and emulsification circuits by people that had very > high technical understanding and the equipment to measure circuitry changes. > I recommend that you do like I did and replace the carb with a '69 AVS. It > flows just as much air and is pre-smog and is a bolt-on replacement. > Good luck!!! > Larry Johnson > > > > > >From: jlsavard@xxxx > >To: Chrysler300@xxxxxxxxxxxxxxx > >Subject: Fwd: [Chrysler300] carburetor > >Date: Sat, 10 May 2003 14:38:50 EDT > >carbuyer02@xxxx writes: > > > > > ok i got a 1970 chrysler 300 with 440 > > > holley carb > > > want the # > > > performance all out!!! > > > can someone help me???? > > > > > > >Sorry, guys, > >When I attempted to forward this earlier, I forgot to highlight the text. > >I > >know nothing about the Holly Carbs. > > > >Joe Savard, > >Lake Orion, MI