250 swap

[Anonymous]

got a question? This cat gave me an 80s model grenada and I am going to swap the 250 into my 65 Ranchero plus all the running gear what kind of problems am I going to encounter in the motor mount department I am sure I am going to have to make a new trans mount for the C4 any help or ideas would be appriceated.

 

[rbohm]

8) the 250 is just under 2" taller than a 144-200 engine, thus you need to lower the engine in the bay that 2". if you can adapt the granada 250 mount you should be able to do it, but i am not sure on that. it has also been said that 250 mounts from a maverick set the engine lower in the bay also. as for the trans mount, it should be ok to use with the C4.

 

[Anonymous]

Hi Omega65,
Just put a 250 in my '65 Falcon. The 250 is the same length as the 200 at the crank pulleys, but 1" longer at the water pump pulley. It is also 1 1/8" wider at the motor mounts. Since I already had a HD rad (2 1/4" thk) and my flex fan was only 1" from rad, I made new motor mount brackets that shifted the motor back 3/4", and shorter to accept the wider block. I reused the stock 200 motor mounts. I also already had a T-10 4 speed so all I had to do there was make a new trans mount strap 3/4" shorter.
The motor is 1 3/4" taller, but I would not try to lower it in the frame. You can play with the air cleaner. In my case I switched to Webers, so I didn't have a problem.
Any other questions let me know, Hotror Bill

 

[Anonymous]

Hi Omega:

I just completed a 250/c4 swap into my 64 4 door falcon sedan (replaced a 170/fordomatic). I used a 2 bbl weber carb with adaptor with the lowest weber airfilter and still had a hood clearance issue. Our solution was elongating the bolt holes in the rubber motor mounts about 1/2 inch (that's about all you can do anyway) and it solved the clearance problem. I used a C4 transmission mount available from Falconparts.com and it worked well. I believe the c4 mount is readily available at other vendors too.

The Scheldahl brothers discuss these & other points about this swap in their book, the Falcon Six Cylinder Performance Handbook as well as a host of other great info when doing this swap.

Good luck - I'm thrilled with the upgrade in my bird.

Jim

 

[Anonymous]

I'm gonna try posting in here again.
I have a 67 Mustang w\ a 65 200 to go in it, and I was wondering first, r there any of the 200 or 250 heads that have larger valves than those in my 65 200 ? If so, does anyone know what years ?

My engine/ head does not have any emissions equipment/provisions, I'm also wondering if any of those heads that might have larger valves etc, will have emissions, like holes for EGR or other things that I'd have to do something about ?

In my County they r particular about emissions so I need to take these things into consideration, thanx.

 

[rbohm]

8) late model 200 and 250 heads have larger valves, i think 75 on are the ones you want.

 

[Anonymous]

Thanx rbohm, say, do they have hardened seats also ? I think someone told me that they stoppt selling leaded fuel in 72 ? I'm not sure what it costs to get new seats and have someone put them in but I'd like to avoid all the expenses I can, I mean theres nough stuff to empty the piggybank already : \

 

[rbohm]

8) i think it was late 74 that hardend valve seats started being installed from the factory. however, dont worry about hardend valve seats as they are of limited value these days. leaded fuel was sold untill 86 i think.

 

[Anonymous]

Really ?? Wow, thats a shocker, cause I figured that leaded was like wayyyyyyy old. I mean we even had an 85 Century but I thought there was only unleaded around at the time, hm...

ANyways, howcome hardened seats r of limited value ? Ppl kept tellin me that for my current head, I'd need to have the seats replaced w\ hardened ones, cause they said the "lead seats" so to speak were soft and unleaded gas would eat them up.

So thats why I've been trying to figure these things out.
I know I keep wearing u out w\ questions but, do u happen to know if there r certain emissions heads or did they all turn into emissions heads/engine by say 75 or 78 ? Would a 200 or 250 from a 75 or later Maverick be compatable ?

I'm jus curious if I will have to do some xtra things to a head in those yr ranges cause of emissions, if I could get by w\ sticking a later head on it, it stands to reason that as long as my car 67, dint have emissions, which it dint, then I wouldnt be plagued w\ trying to comply w\ just such standards, only thing I HAVE to do is, use stock air cleaner and stock exhaust manifold and that kind of thing, at time of inspection. Thanx again for answering my barage of questions rbohm ^_^

 

[MustangSix]

In 1975 catalytic converters started showing up on new cars, requirng unleaded fuel. Leaded fuel for motor vehicles was phased out and by the mid 80's was gone from the market.

However, lead lubricates the valve seats and improves octane rating. A cylinder head made with materials designed to take advantage of leaded fuel eventually suffers. The valves will eat away at the seat, eventually causing the valve to recede into the head. Engines designed for unleaded fuel have hardened seats that resist that wear.

Most Ford six cylinder heads recieved hardened seats in 1977, corresponding with the introduction of catalysts and an unleaded fuel requirement on most Fords.

Cylinder heads with D7 or later casting numbers have the hardened seats you need for unleaded use.

 

[Anonymous]

Thanx MustangSix,
either u or rbohm or anyone. What advantage or disadvantage if any is there between having say, a 77 200 or 77 250 head ?
I mean I know the obvious difference in the block but whats the differences in the heads, is the 250 head just better than the 200 for some reason ?

Furthermore, is the Mavericks inline 6 heads compatable w\ the Mustang engines ?

 

[MustangSix]

The 200 and 250 heads are the same.