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Aug 27, 2004 | 10:42 PM

oldbird1965

Thread Starter

Fleet Owner

Joined: Aug 2004

Posts: 20,419

Likes: 197

From: AZ

Hello

Hi, I'm new here, I've been reading the posts and there seems to be a lot of information here! I of couse, have a few questions. Where can a guy find out what the codes mean on a 91 F150? Do I have to buy a factory manuel? I just bought a 6,700 pound 5th wheel and I've been told that my 351W can handle it. I know it can but wish I didn't have 3:55 gears. Is there an article around on how to change the gear ratio to 4:10 (front & back)? A couple of years ago I put on a Paxton supercharger and unless I get the RPM's up there its not really that helpful. Please, correct me if I'm wrong but I think I need a K&N filter, better intake, higher flowing heads, headers, dual exhaust, cam, and a computer chip. Maybe I should buy a new pickup instead but I'm stuck on this one. Its in great shape and with only 75K on it. Thanks, Oldbird (I also have a 65 Falcon convertible)

Aug 28, 2004 | 10:33 PM

Dealford

Cargo Master

Joined: Aug 2003

Posts: 3,237

Likes: 3

From: Belleville, Ontario

Welcome to FTE!
This link is to the Ranger board's Technical Information sticky:
https://www.ford-trucks.com/forums/s...d.php?t=107538
In the Emissions section, you'll find EEC-IV info.
AL.