Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

engine swap???

Old Jan 13, 2006 | 08:51 PM
  #1  
fordgirl77's Avatar
fordgirl77
Thread Starter
|
Freshman User
Joined: Nov 2005
Posts: 29
Likes: 0
engine swap???

Not sure if this is the right forum/thread line to post this on...but, I have a 79 F250 Super Duty w/ 2 flat tires, no bed, no floor boards, a solid 351M, and a fried starter motor that was improperly installed that we can't figure out hot to get out (the bolt is stripped and rusted -- pointers???). I gave $150 for her and drove her home (got it started then, and stopped at every airhose to reinflate the tires). I later I bought my baby (Millie) a lifted 77 F150 Ranger, with dual exhaust C6 headers, 400M w/ a rod knock (probably needs a rear main seal, hard to say til I get the exhaust leak fixed and can hear the engine clearly). Would it be worth it to pull the 351 and drop her in the 77, service the 400 and then swap back? The 77 is my Baby , as I said, but she's also a work truck (hauling dead trees out of the woods, and such, as well as my daughter's favourite "the roads are slippery today LET'S GO FOR A RIDE MAMA!!!!" school's snowed-out pastime. Suggestions?
 
Reply
Old Jan 13, 2006 | 09:18 PM
  #2  
79 F-150 Stone's Avatar
79 F-150 Stone
Mountain Pass
Joined: Jan 2006
Posts: 195
Likes: 4
Not sure I can help, but I think I love you!

I would suggest taking a long look at the real main in the 351M, they all leak, it seems to be bad crank shaft. Mine (FiFi) is due for a new one.

It certainly would be a good solution to keep your baby on the road while getting the 400 the way you want it!

If you want the 351M for any length of time I would put a new manifold and carb on it while doing the transfer. I went from 9MPG to 14MPG by doing this! (Edelbrock high rise mani and 600CFM 4bbl carb). With a 50% increase in MPG it didn't take long to pay for itself.
 
Reply
Old Jan 13, 2006 | 10:58 PM
  #3  
timothy47129's Avatar
timothy47129
Senior User
Joined: Aug 2005
Posts: 424
Likes: 0
From: southern Indiana
You really went from 9mpg to 14mpg.That almost sounds too good to be true.How much did that setup run you.

Tim
 
Reply
Old Jan 14, 2006 | 07:16 AM
  #4  
79 F-150 Stone's Avatar
79 F-150 Stone
Mountain Pass
Joined: Jan 2006
Posts: 195
Likes: 4
Originally Posted by timothy47129
You really went from 9mpg to 14mpg.That almost sounds too good to be true.How much did that setup run you.

Tim
$600 Obviously I did everything at the same time, plugs, wires, cap, rotor, etc. My quess is that I could have gotten 10-11MPG with the old set up if it was all okay but that carb was a mess. Also I didn't do this for performance, the new 4bbl is not a high performance carb. But I use this truck as a utility/hunting vehecle.
 
Reply
Old Jan 14, 2006 | 10:25 AM
  #5  
Chevy_Eater's Avatar
Chevy_Eater
Logistics Pro
20 Year Member
Photogenic
Liked
Loved
Joined: Apr 2005
Posts: 4,221
Likes: 17
I didn't think they were making Super Duty's in 79?
 
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 06:17 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE