Re: HELP...1986 C20 5.7....smog removed,,,Check engine light???
Quote:
Originally Posted by motornut
now i'm curious........not up there?
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That box above the heater/ac box is the computer (ECM). You will need to change out distributors to an older pre-81 HEI and if carb has wires for mixture it will need to be changed.
Also in pic looks like your heater/ac diverter valve is broken.
http://67-72chevytrucks.com/vboard/s...diverter+valve
Last edited by HOGDADDY; 08-21-2010 at 03:30 AM.
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