Working on 1978 ford f250 460 7.5 l 4bl ohv.
Need smog and vacuum diagram.
This shop manual will help you https://www.fordshopmanual.com/ford-truck-shop-manuals/1978-ford-truck-shop-manual-pdf-download/
If you have not recieved the info you need, send me an email address to [email protected] i will send you a copy of the mitchell manual spec. i would need to know engine size, axle etc. or if you have the calibration number.
hrfunsail, not sure if your rig is federal or california. here is figure 41-44 from the mitchell emission manual. you would have to pick which one you need. Fig 41 and 42 are related to calibration number 8-97-RO. Fig 43 is cal number 8-66U-RO, and fig 44 is for the F350. Cal # 8-66U-RO is teh california truck and the 8-97-RO is federal. Hope these help. You will have to email and email address i cannot post the pics to large.
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