Re: Fwd: [Chrysler300] carburetor

["Laurence G. Johnson" <laurence_g_johnson@xxxx>]

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
>
>
> [Non-text portions of this message have been removed]

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