300 six swap
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 49
Likes: 0
From: Lakeland, Fl
300 six swap
Well I have searched and cant find out much useful information. I have a 79 F 150, 300 I6, and a 4 speed man. It is burning oil and fowling out plugs. I made a call to my garage and was told not to have it diagnosed because it needed rebuilt. So anyway, do I have any option to swap the motor with something bigger and if so what motor would be easiest and best value, and what would I need to make things work. Any info is greatly appreciated seein how im not mechanically inclined. Thanks
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
A swap to any other motor would involve lots of mechanical fiddling etc.
As far as what will bolt to your tranny; 300-6, 302, 351W, 351C (The Cleveland is rare and not well supported anymore). The 300-6 is a good truck motor, my second choice would be the 351Wheezer.
As far as what will bolt to your tranny; 300-6, 302, 351W, 351C (The Cleveland is rare and not well supported anymore). The 300-6 is a good truck motor, my second choice would be the 351Wheezer.
Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
Likes: 46
From: Kemmerer, Wyoming
I ditched my 300 a year ago... it was still running strong, but there's no comparing it to the 390 I have now. It was an easy swap for me, because I had a complete donor truck to rob parts off of. I'm sure it would've been a headache without it.
If you do decide to swap, just make sure your new engine is bigger than a 302. That 300 makes more low end torque, and you'll be disappointed with anything less than a 351.
If you do decide to swap, just make sure your new engine is bigger than a 302. That 300 makes more low end torque, and you'll be disappointed with anything less than a 351.
Senior User
Joined: Oct 2003
Posts: 101
Likes: 0
From: Ohio
Stick w/the 300. Very, very good motors. Great low end torque, decent gas mileage which I bet swann isnt getting w/that 390.
Trending Topics
Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
Likes: 46
From: Kemmerer, Wyoming
Actually, my gas mileage has change very little. I believe that the 300 was overtaxed in pulling my big tires with the stock gear ratio. (plan to fix that soon!) Not knocking the 300s... I also think they're great truck engines that last forever. I've had three different 300s that served me faithfully, but I found all of them lacking in the horsepower department. Of course, I like my foot in the floor!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Posting Guru
Joined: Jan 2000
Posts: 1,899
Likes: 1
From: Cullman Alabama
Lot's of time I wish I had the 300. I'm just too old and feeble to swap my 460 for a 300.
I had three of those tough old 300's and wish I had them all back now!
Rebuild it, or buy a long block from a reputable engine builder.
I had three of those tough old 300's and wish I had them all back now!
Rebuild it, or buy a long block from a reputable engine builder.
Senior User
Joined: May 2003
Posts: 223
Likes: 1
I just did a swap from a 300 six to a 351W, and it went pretty smoothly, you'll need to change the frame perches. I used perches that I got from a junk yard from a 351M truck, and they have to be moved towards the firewall, and then get some new 302/351W motor mounts. Your bell housing will bolt right up.
My biggest problem was trying to get headers to work, and I ended up using Hedman shorties that dumped just above the clutch linkage. I had to "massage" the cab floor alittle to make them work, which then made me have to to some tweaking to the gas pedal linkage. I got a radiator for a 351M which seems to be working just fine.
I was lucky that I had got all the engine brackets for the alt. and pwr. steering with the motor before I had it rebuilt, but those things could cause you some headaches if you had to go in search of them.
I'm up and running just need to do some adjustments to my carb, I went with a 600CFM Holley, and it's running a little rich out of the box.
Hope this helped..
My biggest problem was trying to get headers to work, and I ended up using Hedman shorties that dumped just above the clutch linkage. I had to "massage" the cab floor alittle to make them work, which then made me have to to some tweaking to the gas pedal linkage. I got a radiator for a 351M which seems to be working just fine.
I was lucky that I had got all the engine brackets for the alt. and pwr. steering with the motor before I had it rebuilt, but those things could cause you some headaches if you had to go in search of them.
I'm up and running just need to do some adjustments to my carb, I went with a 600CFM Holley, and it's running a little rich out of the box.
Hope this helped..
Thread
Thread Starter
Forum
Replies
Last Post
fordguy300
1987 - 1996 F150 & Larger F-Series Trucks
21
Apr 6, 2009 11:07 AM
bigmuddy
1973 - 1979 F-100 & Larger F-Series Trucks
12
Dec 30, 2005 10:01 AM
shovelrocker
1973 - 1979 F-100 & Larger F-Series Trucks
3
Nov 2, 2004 03:42 PM