EGR valve for SBC

[Len Sabatine]

    Early to mid 80s Carb'd used neg B.P. Egr's. Many aftermarket EGR Valves
    have calibration  "washers" that insert in the pintle end that match 
EGR flow
    to the engine profile, thus these valves are "tunable . The opening 
rate can
    be an issue , sometimes it needs to be restricted as to slow the 
opening rate
    to avoid a tip in stumble. BW and Standard have OE x ref #s, which may 
help.
    Len

>When I built my 383. i just went to autozone and got an EGR valve for a
>mid-70's pickup, because I figured they are all the same right? -- wrong it
>has POS marked on it which is not piece o' $hit, but positive backpressure is
>required to open the valve, of which I have none.  Does anyone know what
>wells PN I can use with a standard SB aftermarket (specifically holley
>300-64) manifold so I can enable my EGR.  I mean a real simple one, that
>opens when vacuum goes to the port.
>
>Thanks for listening to my electroyappin!
>Ryan Hampl - a K-State Grad!  kasaryan at aol.com
>139 Hoover Ct.                     Controls Engineer
>Salina, KS  67401                  97 B12 / 93 chevy truck EFI 383
>phone  (785) 825 5831
>I'M ALWAYS FIRST TO THE GROCERY STORE!
>http://hometown.aol.com/kasaryan/myhomepage/hotspot.html
><A HREF="http://hometown.aol.com/kasaryan/myhomepage/hotspot.html">Ryan Hampl
>and his happenin' Hotspot</A> - updated 11/20/00
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