1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Swapping a 5.8 for a 7.3

Old 08-21-2009, 02:13 PM
matpasch is offline
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Conanski. Please give me engine build details

Originally Posted by Conanski View Post
With a cam and longtube headers my 5.8 f150 was getting 17+mpg at 70mpg unloaded and that's with an auto trans so a manual should do even better. The motor was producing about 380ft/lbx TQ and maybe 275hp which puts it well above the IDI on all counts, and the TQ came in real low.. no problem spinning tires on dry pavement just by punching it from a stop. Considering you can get that for literally a few hundred dollars in parts it's hardly worth the effort to swap in an IDI IMO.

Hey Conanski, could you tell me the details of you cam and headers on your 5.8L , I have a '93 f250 4x4 F250 with a 351 and 5spd and would love to get that kind of milage
thanks mat
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