1975 Ford F150 Ranger XLT - Ford Forum - Enthusiast Forums for Ford Owners

Thread Tools Search this Thread
Old 02-18-2017, 08:31 PM
Junior Member
Thread Starter
Join Date: Feb 2017
Posts: 1
Default 1975 Ford F150 Ranger XLT

I bought a 1975 Ford F 150 with a 390 punched 60 over and ended up taking the c6 automatic transmission and I want to keep the body to use as a daily driver in order to maximize fuel economy I want to get these smallest engine possible even if the engine would require slight modifications would not be discouraging IE moving or re welding motor mounts willing to do just about whatever it takes to improve the fuel economy from 8 miles to the gallon where I was at with the engine that was in the body to hopefully in the high twenties
Reply With Quote
Old 02-18-2017, 09:47 PM
Hayapower's Avatar
Super Moderator

Join Date: Jul 2006
Posts: 5,364
Thumbs up

Welcome to the site.

Going small/X small on the displacement can have an adverse result, or deliver no realized gains. The body/chassis are fairly heavy and running a small CI engine can just add to more throttle angle needed, or, time under acceleration to get the hulk moving and up to speed. Or, should you decide to tow/haul at some point, have a heavy foot, small doesn't always pay off. A FI 5.0/302 with overdrive, or 5sd manual/OD may be a decent choice and can be had reasonably cheap. A sizable job and some unexpected costs involved for most swaps. We used to retrofit 70's 250/350 with Perkins and Detroit diesels and was a big job as well. Never saw fuel numbers in the top end of 20 either.
'High' 20's,, wouldn't be a realistic number given the weight IMO unless a diesel was sourced or smaller CI/FI with OD, and even then, or without OD, gear set change possibly, doubtful. Lower 20's,, doable with gas,diesel without extensive work, or a fat wallet. There was an old saying about HP and what you can build?,, the answer was always 'how much money do ya have! Same goes for MPG..
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
1975 f150 390 andrew75 Ford F-150 0 03-31-2016 05:41 PM
1975 Ford F250 Highboy for sale hotrod PRIVATE For Sale / Trade Classifieds 1 08-01-2010 02:31 PM
1975 ford gas mileage Pat99 General Tech 4 06-11-2010 06:49 PM
1975 ford f250 problems jiggles Ford F-250 & Ford F-350 0 08-28-2009 10:32 PM
1975 ford truck transmission f/s studebaker PRIVATE For Sale / Trade Classifieds 0 01-21-2008 09:08 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 08:24 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.