The short of it is this. We have a 73 New Holland 1112 swather with a 250, or so says the valve cover. It just kicked a rod. We are waist deep in haying and need an engine, there is a used 300 local for $250, but doesnt have manifolds. Will the 300 drop in and can we use our manifolds? I know they are the same bell pattern, but thats all i know. Also, is there a way to know for sure if its a 200/250 vs. 240/300? My grandfather and i were both thinking it was a 300. Number on the block he found is 6DZ. Im assuming he didnt see / couldnt find the decade code.

 

Easy. What does the valve cover look like? Google the 200/250 and then the 240/300. They have two distinctly different valve covers.

 

Also....no, the manifolds will not swap over. Is it a diesel or gas engine? There were several 4 cylinder diesel ford industrial engines used in different ag equipment. Do you have the ability to post photos? That'd be helpful. If not, shoot me an email.
bthompson47f@hotmail.com
I'll see what i can do to help.

 

The 250 will have an intake manifold cast integral with the head. The 300 intake bolts on. The 300 is about 3 inches longer than the 250. Do you have an extra 3 inches of room to fit it in?

 

I did a quick search on that swather model number and the 240/300 are listed along with some 4 cylinder diesels and couple others. No 250.

 

Its gas.

I did that, but i guess i wasnt looking at the valve covers, was looking at the distributor, oil filter, plug angle etc, all looked to be the same or close enough you couldnt tell from a pic.

From what i was reading, the 144 and 200 have integral manifold, the 250 bolts on. Have all sorts of room.

Would make more sense to have a 300. Which site did you find this on? The two i looked at said they had 250 and 300 I-6, among the others you mention. Thanks for your help guys, ill try to decode the number he gave me now that im home, and see if i cant spot the difference in the valve covers.

 

So the only way it has a 250, is if it was put in there, if thats the case, a 240/300 can go back in. The original engine did the same thing here 20 years ago or so.

 

250> INTEGRAL INTAKE
240> BOLTS ON

 

Sounds like the 300 should fit without too many issues. Whatever is in there, its cashed. Even if it were a 250, as FTF (FoMoCo engineer) said, the manifolds will not swap over. If its a 240, everything can be swapped in an afternoon. Worst case scenario, and its a 250, Have you been able to locate any parts for the 300 locally? Where are you located? Might be able to scrounge some parts from members here.

 

Well if you guys are certain (which means wikipedia is wrong, not surprised) then we do in fact have a 240/300

 

This is the block casting number date code and it's 6D2 (not 6DZ). Block cast April (D) 2, 1976 (6), so it cannot be a 240 I-6.

250 I-6 introduced in 1969, used thru 1980 in misc. Ford/Merc Passenger Cars.

Its smaller brother, the 200 I-6 introduced in 1964, used thru 1983 in misc Ford/Merc Passenger Cars.

200/250 I-6's have 7 main bearings, the intake manifold is made as part of the cylinder head.

240/300 I-6's are completely different than the 200/250 I-6's. Intake & exhaust manifolds bolt to the cylinder head.

240 I-6: 1965/72 Galaxie/LTD; 1965/74 trucks & Econolines. 240 cancelled at the end of the 1974 model run.

300 I-6: 1965/96 trucks & Econolines; 1980/96 Bronco's.

 

Are you able to snap a picture of it? That would quickly help us identify which engine it is.

 

I went back to try and find that page with the listings and what do I find instead?

https://www.purplewave.com/auction/110315/item/3432

That motor has the filter up front and the roundish intake, just like a 250. It is said to be a 250, although they say 4 cylinder despite the 6 plugs visible in the picks.

OP needs to look at the intake and post pics.

 

The engine pic in your link looks like ours from what i can remember, but cant be sure. Grandparents had a funeral yesterday so didnt get a chance to get out and look myself, or have them look.

 

"That motor has the filter up front and the roundish intake, just like a 250. It is said to be a 250, although they say 4 cylinder despite the 6 plugs visible in the picks."


you are correct sir...that is a 250 ci carbed six cylinder.