71 F700 engine size?

SD250 · 10-08-2007, 06:11 PM

I just bought a 71 F700, the guy I bought it from thought it was a 361. Is there an easy way to tell if its a 361 or what ever it may be? The decal on the valve cover is really scratched up and not much left of it. Any help on identifying this engine would be appreciated.

75K30 · 10-08-2007, 10:45 PM

Welcome to the site;
You have found an old truck with an FT engine. I believe the FT should have a cast iron timing chain cover, and various differences in the length, (or maybe it was the diameter) of the crank snout and balancer bolt. I think I remember the FT's having a larger retaing bolt.
FT's were available in 330, 359, 361, 389, and I think the 391.
These shared very little with the FE engines, but some misc parts do fit. Keep in mind that there are about 6 different water pumps for these engines and almost none of them interchanged. You can use FE heads on the FT's, and have seen 390 rods in some 330FT's. Have also seen some hacked up exhaust manifolds thrown on some old trucks and buses.
Timing chains and sprockets get really interesting with the FT engines also.
Before we get too far with this, do you have any casting numbers on any components that you can read? FT's were pretty wide, maybe some clear pics? Dist. mounting was a little different.
I can help with numbers, or you can remove a head, and we can measure and discuss bore / stroke size, but that is a bunch of work.
Does it run?

SD250 · 10-11-2007, 05:38 AM

75K30, yes it runs, but kinda rough. Its cold blooded for sure, has a Holley carb, dist. is on the front right hand corner when facing the engine. The valve covers has the corners at a slight angle so they are not a round corner. The engine needs a good cleaning, so I can tell if the timming chain cover is cast or stamped metal. I did notice a small twist off cover down by the oil filter, I'm thinking this is a fuel filter? I hope to get it tuned up a little bit this weekend. I know very little about the older Ford V8's, your help is really appreciated. Thanks sd250ia

75K30 · 10-11-2007, 06:52 AM

At least the truck runs, that is a start. The valve covers would, or even could indicate either the FT, or the FE engine, but I would bet a dime to a dollar that it is an FT engine. Would be interesting to see one of those old guys again/
Cold blooded Holleys. You don't say, Lol. A quick re-build, and gettinf all of the low air speed passages clean would fix that up, and it will start just fine.
Easy way to check for an iron component (timing chain cover) is to get a plain old magnet. Most fellas do not have an aluminum magnet, so if it sticks, you can count on the material being iron.
Let us know how the old truck works out.

crabtruck · 10-12-2007, 03:02 AM

Quote:

Originally Posted by 75K30

...Easy way to check for an iron component .... is to get a plain old magnet.
Most fellas do not have an aluminum magnet, so if it sticks, you can count on the material being iron.
.....

ROFL wonder how many will add that to their wish lists ...

SD250 · 10-13-2007, 03:21 PM

I got a rebuild kit for the carb and my son rebuilt it today, its a lot better bur still not quite right. I wants to stumble or hesitate when you step down on the gas pedal then will pick up and run pretty darn good. Put a new set of points, condenser, rotor and dist cap on also.
I did find some numbers on the engine, the intake manifold has 4b2101pe-942f-ba on it . I found 2E27 and El on a flat spot down by the oil filter.
Hopefully I can get the carb working a little better. Also there is no place for a temp guage to hook up to the engine

75K30 · 10-13-2007, 05:04 PM

There is always a spot for a temp gauge, just have to be a little more creative when looking. I would imagine that there is a plug, or some sort of access on one of the heads, or even the intake mainifold. It is just hiding from you right now, but it is there somewhere.
You problem with your carb (stumble) is simply the accelerator pump. It may be plugged, or is just not getting enough fuel through, and the engine starves for fuel during the intitial crack of the throttle blades. Generally a little more stroke on the arm, or just even making sure the thing is working will solve your trouble.
Should first open the choke so you can see down inside the venturis and apply some throttle (of course with the engine off) and see if you notice a good healthy stream of gas being sent. My guess is that you will have very little gas when you perform this little test. That will be your stumble. Clean out the acelerator pump area and chack again until you have a good healthy squirt of fuel.

I will look intot hose numbers for you when I get to the shop to see if we can de-code this thing for you.

71 LONG BED · 10-30-2007, 01:16 PM

If it truely is (I don't dobt you) an F700, I'd love to purchase the hood emblems from you. I collect them. I have F100, F250, F350, F600, and F750 so far. All without the reflector. (Which is 1967 only on the light duty trucks) The F750 emblems came off of a '71, same as yours. I wasn't aware they made an F700 and an F750. Can you post pictures of your truck? I have a 1971 F100 Sport Custom, and a 1967 F350 mason dump. The 1967-1972 body style is my weak spot.

10-08-2007, 06:11 PM	#1
SD250 Junior Member Join Date: Oct 2007 Posts: 6	71 F700 engine size? I just bought a 71 F700, the guy I bought it from thought it was a 361. Is there an easy way to tell if its a 361 or what ever it may be? The decal on the valve cover is really scratched up and not much left of it. Any help on identifying this engine would be appreciated.

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10-08-2007, 10:45 PM	#2
75K30 Senior Member Join Date: Jul 2006 Posts: 3,292	Welcome to the site; You have found an old truck with an FT engine. I believe the FT should have a cast iron timing chain cover, and various differences in the length, (or maybe it was the diameter) of the crank snout and balancer bolt. I think I remember the FT's having a larger retaing bolt. FT's were available in 330, 359, 361, 389, and I think the 391. These shared very little with the FE engines, but some misc parts do fit. Keep in mind that there are about 6 different water pumps for these engines and almost none of them interchanged. You can use FE heads on the FT's, and have seen 390 rods in some 330FT's. Have also seen some hacked up exhaust manifolds thrown on some old trucks and buses. Timing chains and sprockets get really interesting with the FT engines also. Before we get too far with this, do you have any casting numbers on any components that you can read? FT's were pretty wide, maybe some clear pics? Dist. mounting was a little different. I can help with numbers, or you can remove a head, and we can measure and discuss bore / stroke size, but that is a bunch of work. Does it run?

10-11-2007, 05:38 AM	#3
SD250 Junior Member Join Date: Oct 2007 Posts: 6	75K30, yes it runs, but kinda rough. Its cold blooded for sure, has a Holley carb, dist. is on the front right hand corner when facing the engine. The valve covers has the corners at a slight angle so they are not a round corner. The engine needs a good cleaning, so I can tell if the timming chain cover is cast or stamped metal. I did notice a small twist off cover down by the oil filter, I'm thinking this is a fuel filter? I hope to get it tuned up a little bit this weekend. I know very little about the older Ford V8's, your help is really appreciated. Thanks sd250ia

10-11-2007, 06:52 AM	#4
75K30 Senior Member Join Date: Jul 2006 Posts: 3,292	At least the truck runs, that is a start. The valve covers would, or even could indicate either the FT, or the FE engine, but I would bet a dime to a dollar that it is an FT engine. Would be interesting to see one of those old guys again/ Cold blooded Holleys. You don't say, Lol. A quick re-build, and gettinf all of the low air speed passages clean would fix that up, and it will start just fine. Easy way to check for an iron component (timing chain cover) is to get a plain old magnet. Most fellas do not have an aluminum magnet, so if it sticks, you can count on the material being iron. Let us know how the old truck works out.

10-13-2007, 03:21 PM	#6
SD250 Junior Member Join Date: Oct 2007 Posts: 6	I got a rebuild kit for the carb and my son rebuilt it today, its a lot better bur still not quite right. I wants to stumble or hesitate when you step down on the gas pedal then will pick up and run pretty darn good. Put a new set of points, condenser, rotor and dist cap on also. I did find some numbers on the engine, the intake manifold has 4b2101pe-942f-ba on it . I found 2E27 and El on a flat spot down by the oil filter. Hopefully I can get the carb working a little better. Also there is no place for a temp guage to hook up to the engine

10-13-2007, 05:04 PM	#7
75K30 Senior Member Join Date: Jul 2006 Posts: 3,292	There is always a spot for a temp gauge, just have to be a little more creative when looking. I would imagine that there is a plug, or some sort of access on one of the heads, or even the intake mainifold. It is just hiding from you right now, but it is there somewhere. You problem with your carb (stumble) is simply the accelerator pump. It may be plugged, or is just not getting enough fuel through, and the engine starves for fuel during the intitial crack of the throttle blades. Generally a little more stroke on the arm, or just even making sure the thing is working will solve your trouble. Should first open the choke so you can see down inside the venturis and apply some throttle (of course with the engine off) and see if you notice a good healthy stream of gas being sent. My guess is that you will have very little gas when you perform this little test. That will be your stumble. Clean out the acelerator pump area and chack again until you have a good healthy squirt of fuel. I will look intot hose numbers for you when I get to the shop to see if we can de-code this thing for you.

10-30-2007, 01:16 PM	#8
71 LONG BED Junior Member Join Date: Oct 2007 Posts: 2	If it truely is (I don't dobt you) an F700, I'd love to purchase the hood emblems from you. I collect them. I have F100, F250, F350, F600, and F750 so far. All without the reflector. (Which is 1967 only on the light duty trucks) The F750 emblems came off of a '71, same as yours. I wasn't aware they made an F700 and an F750. Can you post pictures of your truck? I have a 1971 F100 Sport Custom, and a 1967 F350 mason dump. The 1967-1972 body style is my weak spot.