Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1947 and Older Ford Trucks
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-22-2005, 03:45 PM
jtg1 jtg1 is offline
New User
 
Join Date: Oct 2005
Posts: 9
jtg1 is starting off with a positive reputation.
curiosity ? about engine swaps.

Hi All. I am new to this site and have been reading old posts for about a month now. Thank you all for this site, the amount of info is staggering.

I have a 1947 ford pickup that has been sitting behind my house now for about 5 years. I am finally going to put it in the garage and start taking it apart this winter. I don't have a title and am hoping I can get one from Wisconsin's DMV for it.

I am curious about why so many of you have chosen to get rid of the flathead and put a newer motor in. So I wanted to ask, is the flathead unreliable? I also wanted to ask those of you who do have the original motor what kind of milage do you get with it? I am going to build my truck as a daily driver and would like to keep it as stock as possible only changing a few things such as converting to 12v. I think this is a one ton because it has so many leafs in the back but it also has 17 inch wheels.

Anyhow, I'm sure I will have more questions later. Thanks again for this site.
Jim
Reply With Quote
  #2  
Old 10-22-2005, 05:50 PM
46achers 46achers is offline
Junior User
 
Join Date: Nov 2003
Location: Slippery Rock, Pa.
Posts: 79
46achers is starting off with a positive reputation.
One of the biggest reasons for a late engine swap, at least for me, has been the avalibility of parts for the later model engines, go into a "typical" parts store and enquire about a flathead and you get blank stares.
If I were to do another truck in the future , (I have three 46/7's now), it would be Flathead powered.
I have a good Pa 1/2ton, (it does sound like you have a 3/4 or bigger truck), title if you run into problems acquiring one from your state
This is a good site, ask away, someone will know the answer.
Reply With Quote
  #3  
Old 10-22-2005, 05:57 PM
IB Tim's Avatar
IB Tim IB Tim is online now
Site Administrator
 
Join Date: Jan 2003
Location: 3rd Rock
Posts: 116,127
IB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputationIB Tim has a superb reputation
Quote:
Originally Posted by jtg1
Hi All. I am new to this site and have been reading old posts for about a month now. Thank you all for this site, the amount of info is staggering.

I have a 1947 ford pickup that has been sitting behind my house now for about 5 years. I am finally going to put it in the garage and start taking it apart this winter. I don't have a title and am hoping I can get one from Wisconsin's DMV for it.

I am curious about why so many of you have chosen to get rid of the flathead and put a newer motor in. So I wanted to ask, is the flathead unreliable? I also wanted to ask those of you who do have the original motor what kind of milage do you get with it? I am going to build my truck as a daily driver and would like to keep it as stock as possible only changing a few things such as converting to 12v. I think this is a one ton because it has so many leafs in the back but it also has 17 inch wheels.

Anyhow, I'm sure I will have more questions later. Thanks again for this site.
Jim
...Welcome to Ford Truck Enthusiasts!
We are happy you have chosen the best source for Fords!

Enjoy FTE....and
JOIN CLUB FTE -SUPPORT THE FORUMS!
…..See you on the boards.
__________________
Administrator
tim.lamkin@internetbrands dot com
Life is not only time……paradoxically, it is the denial of time!
What lies behind us and what lies before us are tiny matters compared to what lies within us.

When you are down...look up...get up...and don't ever give up....
Reply With Quote
  #4  
Old 10-22-2005, 06:05 PM
Carlene's Avatar
Carlene Carlene is offline
FTE Administrator
 
Join Date: Feb 2001
Location: Silver Springs
Posts: 8,067
Carlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputationCarlene has a superb reputation
Hi Jim - welcome to FTE

As with 46Achers, we went with a newer motor for the availability of parts. If we ever get it done, we don't want to have to trailer it to car shows & stuff.

If it weren't for that, we probably would have rebuilt the flathead - awesome sounding motors.

As far a getting a title, the guy we bought our truck from lives in Wisc. and said its very easy to get a title there. Check with your local DMV, they're usually very helpful - that is if you get the right person.

Have fun with your project and nice to have you aboard.
__________________
Carlene

FTE Guidelines
Check out the Florida Chapter
Reply With Quote
  #5  
Old 10-23-2005, 03:00 PM
billb7984 billb7984 is offline
Junior User
 
Join Date: Aug 2002
Posts: 91
billb7984 is starting off with a positive reputation.
Hello there
I have a 47 truck ,and it has the flathead in it .I am happy with it so I dont want to switch it.The gas mileage isnt very good ,but I only take the truck on sunday drives ,so I dont worry about the gas!!!!!
__________________
billb
Reply With Quote
  #6  
Old 10-23-2005, 10:38 PM
GB SISSON's Avatar
GB SISSON GB SISSON is offline
Postmaster
 
Join Date: Jan 2005
Location: Orcas Island Wa.
Posts: 2,756
GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.
Hi JIm, sounds like a great truck.Yes it is a one ton with those 17" wheels and the big 5 lug pattern.I drove a 38 one ton as my daily driver for 10 years.The rear axle ratio was 4.11 and with those 34" dia tires(7.50 x 17) it was higher geared than many modern pickups.The stock ratio went lower in 39,but not much.It took a couple of flathead v8s to get it right,but when I did one that was balanced with a merc. crank, hard seats, adj. lifters and a chev 1 wire alternater,it was Very reliable for year after year.I run these trucks in my woodworking business and took that one down intersrate 5 many times to Seattle.Yours would be better yet with those hyd. brakes.I say go with the flathead,built for reliability,not hopped up for speed. Have fun...need any 7.50x17? I have 2 brand new.......GB
Reply With Quote
  #7  
Old 10-24-2005, 12:25 AM
46yblock's Avatar
46yblock 46yblock is offline
Postmaster
 
Join Date: Jul 2003
Location: Southern Oregon
Posts: 2,686
46yblock is gaining momentum as a positive member of FTE.
If you stick with the flathead, parts seem to be readily available, although by mailorder.
Replacing the motor with a later model almost necessitates replacing the tranny too, certainly the exhaust, and then maybe the rear end, and then maybe the brakes, and on and on. So for a driver within the next couple years, stick with the flatty. My 2 cts.
Your expertise with automotive mechanics is also something to figure in.
As for mileage, you might be able to squeeze a little more out by increasing compression. I am not that familiar with flatties, but minimizing quench and combustion chamber volume seems to make sense.
I would think about some of the aluminum heads. Dont know but maybe the two carb manifolds are more efficient than the single.
P.S. I posted up on the reference manual a link to an outfit that was manufacturing new flathead blocks. Dont know anything about them other than the link.
__________________
Mike Southern Oregon
[
1946 1/2 ton with Y-block, '62 Mercury Meteor S-33, '60 Thunderbird, '64 Falcon Futura, '90 Ranger 4WD, '54 Ford model 600 tractor

Last edited by 46yblock; 10-24-2005 at 12:59 AM.
Reply With Quote
  #8  
Old 10-25-2005, 02:29 PM
jtg1 jtg1 is offline
New User
 
Join Date: Oct 2005
Posts: 9
jtg1 is starting off with a positive reputation.
46achers, let me know if you still have that title please. jtg1@pctcnet.net

I must have gotten the wrong gal at the DMV or something, she finally told me the only thing I can do is sell parts off of my truck.

GB, I thought I had read somewhere that I can fit a 16inch wheel onto this truck, any truth to that? I still haven't decided yet if I am going to go that route or use the original wheels. I looked at Coker tire's web site and there doesn't seem to be that much of a selection and I would want a little more aggresive tire for the rear than what I found so far. Do you have a re-builder that you would recommend? I have so far found 1, Tatom out of California and am waiting to hear back from them with a guestimate.
Thank you all for the input.
Reply With Quote
  #9  
Old 10-26-2005, 01:13 AM
GB SISSON's Avatar
GB SISSON GB SISSON is offline
Postmaster
 
Join Date: Jan 2005
Location: Orcas Island Wa.
Posts: 2,756
GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.GB SISSON has a great reputation on FTE.
Dont know of ant 16" wheel that fits the big 5 hole pattern.Most of the wheels that fit are 20" dual type (Budd Wheels).I do have 2 good 7.00 x 17 goodyear snow tires mounted lots of tread and no cracks....Tatum Custom engines is in Mt. Vernon, Washington,just a stones throw from the island where I live. Very good,Very expensive and very busy.I had a machine shop do my flathead that subbed out a lot of Tatum's work.They are no longer in business. Just have to ask around I guess.Tatum can build you a real reliable runner, but keep in mind, the flathead V8 is best left to someone like him who has the knowledge and background on them....Do a search for Motor City Flatheads as well. Good Luck, GB
Reply With Quote
  #10  
Old 10-31-2005, 02:28 PM
41inWV's Avatar
41inWV 41inWV is offline
Senior User
 
Join Date: Dec 2004
Location: Wild Wonderful WV
Posts: 182
41inWV is gaining momentum as a positive member of FTE.
Flathead Vs Late model

I'm building a '41 and have been suffering the SAME delima Flathead Vs the 302 I have sitting on the engine stand. I have a C-4 ready to go in as well as the FlatO Matic tranny adaptor, and an 8" ford rear end since that torque tube hadda go.

My Flatty runs well with little or no oil leaks, so I'm leaning toward staying with the flatty til it dies, since I'm only planning to run the truck locally (My '34 is my long distance ride). If you dump the flatty, dont forget to plan on replacing the radiator too, yet another expense.

As for the wheels, I had a set made for mine by Stockton wheel with the 5 X 5.5 bolt pattern so I can run 15" wide whites on it. Sorta had to do that since one of the first mods I made was an ECI disc brake ket on the front, and I wanted to save that investment.

This probably didn't help with your decision, but if you're planning on running the wheels off of it, I'd prolly go late model, if it's strictly a local cruise in ride.....run that flatty !
__________________
Steve
WV Chapter Member
1941 Ford 1/2 Ton Flathead - FTE 'Ride of the Week' 10/28-11/02 2008
1934 Chebby Sedan
Reply With Quote
  #11  
Old 11-02-2005, 04:13 PM
Ringo Fonebone's Avatar
Ringo Fonebone Ringo Fonebone is offline
Posting Guru
 
Join Date: Jan 2004
Location: Southern Alberta
Posts: 1,460
Ringo Fonebone is gaining momentum as a positive member of FTE.
If the choice is between a Flathead and a SBC there shouldn't even be a choice. Flathead all the way my friend. Sbc's belong in Monzas.

The one thing I would look in to is an electric fuel pump. The stock fuel pump pushrod grinding a groove in the cam was not one of Ford's better ideas.

Nothing on earth sounds like a Flathead Ford except a Flathead Ford
__________________
1927 Roadster Pickup
1964 Mercury M100 project
1983 F150 Supercab

Last edited by Ringo Fonebone; 11-02-2005 at 04:17 PM.
Reply With Quote
  #12  
Old 11-06-2005, 11:52 AM
Jon Henry's Avatar
Jon Henry Jon Henry is offline
Senior User
 
Join Date: Dec 2004
Posts: 150
Jon Henry is starting off with a positive reputation.
Thumbs up eng. swaps

Hey Jim;
Welcome to the site!! It's cool you're going to fix up your truck, good luck!
I bought a '38 1/2 ton last yr with a '36 eng., 85 HP. It was nicely done and runs like a champ, altho I think my starter or the relay is going. Mileage is maybe ard 15, the fuel gage isn't too steady.
Didn't know what a Flathead was until I started with mine, but I hope to keep it going for as long as I can. I'm not a purist by any means but will try to keep the old boy as "Ford" as possible.
Trying to stick with 6V and a generator seems to be my hangup. All the gages work or can be replaced but there's not much capacity for upgrades like turn sig's, heater, etc., and is an alt. that much better than the old gen. bumped up to 12V??
I'll keep my eyes out for your progress and throw in my 2 cents if I can.
Best of luck~JH
Reply With Quote
  #13  
Old 11-06-2005, 04:23 PM
howdy71475 howdy71475 is offline
Junior User
 
Join Date: Apr 2005
Location: Southwest KS
Posts: 69
howdy71475 is starting off with a positive reputation.
I am just completeing the rebuild of a 95hp flathead for a '47 tonner. I had no problems getting flathead parts, I just walked into the local NAPA and told them what I needed. At first, they had to order some of the more major parts, Oversized pistons, rings, hard valve seats and springs, etc. but most of the other parts from model 59 carb kits, to temp senders, hoses, belts, and the like they have on hand. I prefer the flathead to modern engine just because i'm a purist. One tip I might have to getting past the balnk stares is to call it an L head when you go in. Most of the parts books now list it as that. Hope this helps.
Reply With Quote
  #14  
Old 11-09-2005, 01:35 AM
bootie bootie is offline
Senior User
 
Join Date: Jul 2004
Location: New Zealand
Posts: 363
bootie is starting off with a positive reputation.
i pulled the flattie from my truck - only so i can use it in my model a i opted for a 302 boss to stick between the rails - i had the motor before i got the truck
__________________
scrappin' the runnin' boards!!!!!!
Reply With Quote
  #15  
Old 04-30-2006, 11:41 AM
knuckleharley knuckleharley is offline
Freshman User
 
Join Date: Apr 2006
Posts: 35
knuckleharley is starting off with a positive reputation.
Engine swaps

Quote:
Originally Posted by jtg1
Hi All. I am new to this site and have been reading old posts for about a month now. Thank you all for this site, the amount of info is staggering.

I have a 1947 ford pickup that has been sitting behind my house now for about 5 years. I am finally going to put it in the garage and start taking it apart this winter. I don't have a title and am hoping I can get one from Wisconsin's DMV for it.

I am curious about why so many of you have chosen to get rid of the flathead and put a newer motor in. So I wanted to ask, is the flathead unreliable? I also wanted to ask those of you who do have the original motor what kind of milage do you get with it? I am going to build my truck as a daily driver and would like to keep it as stock as possible only changing a few things such as converting to 12v. I think this is a one ton because it has so many leafs in the back but it also has 17 inch wheels.

Anyhow, I'm sure I will have more questions later. Thanks again for this site.
Jim
Flatheads are very reliable engines if they are in good condition or properly rebuilt. People do engine swaps for a variety of reasons,the prime ones being the flatheads are VERY expensive to rebuild,and they want more modern engines with more power and torque.

You also have to consider gas mileage today. Flatties are very economical engines,but they produce very little torque. Ford used low rear gears to compensate for this,and low rear gears are not good for gas mileage. This is especially true with 3/4 or 1 ton pickups like you have. IF you are going to use this as a daily or semi-daily driver,my suggestion is to put a 9 inch rear from a late 60's to early 70's Galaxie in it because they will have 2:79 to 3:08 rear gears to keep the rpm's down,and to put a 302 in there in place of the flattie. Preferably one with a automatic overdrive or a 3-speed +od manual transmission. You can probably do this cheaper than you can rebuild the flathead. Swap over to front disc brakes and have 4 matching bolt patterns that allow you to run 15 inch wheels with radial tires. The money you save on the tires will probably pay for the the brake swap and the mounts. If your radiator is good you can use it by just blocking off one top and one bottom outlet. If not,you can buy a new custom radiator for it or adapt one from a Mustang,Maverick,pickup,or whatever you can find that has the outlets on the right sides and is the right width. For example,I'm running a 66 Buick Special radiator in my 62 F-500 because I needed a radiator,and already had the Bucik radiator laying around. The radiator doesn't know what it is in.
Reply With Quote
Old 04-30-2006, 11:41 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie from Wisconsin GASflatty New Member Introductions 2 11-20-2014 12:55 AM
80-86 Full Vacuum Diagrams WANTED! Jim Wien 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 5 11-14-2014 10:32 PM
drivers door dilemma Dave145 1973 - 1979 F-100 & Larger F-Series Trucks 13 11-18-2013 11:44 PM
exhaust and carb suggestions 1979FordDiesel 1973 - 1979 F-100 & Larger F-Series Trucks 4 03-26-2013 02:13 AM
75-79 4x4 Steering Box and tall springs? JimBoB77 1973 - 1979 F-100 & Larger F-Series Trucks 7 07-22-2008 04:16 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1947 and Older Ford Trucks

Tags
engines, flathead, ford, tatum, unreliable, wa

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 01:39 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup