VECI label from '86 5.0L EFI
For the label specific to YOUR ~'90-up Ford, click
this link, then click "Quick Guides" in the sidebar, then click "VECI Labels" and find the calibration code on the sticker on your EEC. On '87-91 F-series & Broncos, it's in the driver's kick panel. '92-96 is in the same place, but it's not visible without removing the EEC into the engine compartment. Some '92-96 trucks also have the calibration code on a sticker in the door jamb, but it's hit-or-miss; I haven't found any pattern.
For carburetors, try this:
http://www1.autozone.com/servlet/UiBroker?ForwardPage=az/cds/en_us/0900823d/80/0c/e6/05/0900823d800ce605.jsp 
![vacuum-86-f150-efi.jpg VECI label from '86 5.0L EFI
[url=http://www.supermotors.net/registry/media/894687][img]http://www.supermotors.net/getfile/894687/thumbnail/vaclinesefi.jpg[/img][/url]
For the label specific to YOUR ~'90-up Ford, click [url=http://www.motorcraftservice.com/vdirs/retail/default.asp?pageid=&gutsid=]this link[/url], then click "Quick Guides" in the sidebar, then click "VECI Labels" and find the calibration code on the sticker on your EEC. On '87-91 F-series & Broncos, it's in the driver's kick panel. '92-96 is in the same place, but it's not visible without removing the EEC into the engine compartment. Some '92-96 trucks also have the calibration code on a sticker in the door jamb, but it's hit-or-miss; I haven't found any pattern.
[url=http://www.supermotors.net/registry/media/901662][img]http://www.supermotors.net/getfile/901662/thumbnail/eec93calcodes.jpg[/img][/url]
For carburetors, try this:
http://www1.autozone.com/servlet/UiBroker?ForwardPage=az/cds/en_us/0900823d/80/0c/e6/05/0900823d800ce605.jsp](https://www.supermotors.net/getfile/72424/fullsize/vacuum-86-f150-efi.jpg)