Author	[Modern View]
DC_PA 08-14-2012 21:32:23 24.101.97.252 Report to Moderator	Hi! I got Farmall 400 tractors, I just got another but it has a 281 motor in it. How can u tell 400 and 450 tractors? Are there any distinct differences in 400 or 450's? Any help would be appreciated. Thanks [Reply]   [No Email]
LarryM 08-15-2012 11:00:46 146.151.183.162 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-14-2012 21:32:23   The late 400s had a c-281 in them. [Reply]  [No Email]
LarryM 08-15-2012 11:00:03 146.151.183.162 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-14-2012 21:32:23   The late 400s had a C-281 in them. [Reply]  [No Email]
D Slater 08-15-2012 05:29:42 184.15.20.202 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-14-2012 21:32:23   Short answer, if you can only find a serial number on the ID plate. Look for the number on lever that operates the T/A clutch shaft. ITs on the left side and the rod from T/A operating handle goes to it. Serial number 27067 or lower and the 6 digit number starts with 366, = 450 chassis. Any serial # below forty some thousand and a lever # starting with 359 = 400 chassis. Maybe not that short of answer. [Reply]  [No Email]
DC_PA 08-15-2012 19:49:24 24.101.97.252 Report to Moderator	Re: Farmall 400 or 450 in reply to D Slater, 08-15-2012 05:29:42   Serial number is 15611,.. Nothing else is readable on the tag. Does that mean it a 450? [Reply]  [No Email]
D Slater 08-16-2012 06:29:50 184.15.20.202 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-15-2012 19:49:24   Look close at the lever that the t/a handle moves when shifted on the side of clutch housing. See if a part # can be read. If its 359507R1 thats a 400 chassis. If its 366352R1 its a 450 chassis. The serial number you posted could be for a 400 or 450. I just mentioned the serial number break in case IH stuck the 450 lever in some of the last few 400 tractors. They would have a over 40,000 serial # though. way above what the 450 tractors went to. 400 tractors also have a clutch pedal travel stop bolt in the very bottom of the pedal. It has a square head with a jam nut. 450 tractors didn't use the bolt. Lots of other things to look for but none are fool proof after the years since made. 450 used a all plastic covered steering wheel that went on a splined shaft. 400 was keyed and just covered on the outer ring. 450 used a key switch below the instrument panel. 400 in the panel. To ID the engine look for a serial number on a raised flat place in the block casting just above the sheet metal cover on the oil filter side of the block. If no number can be found it may be a replacement block. If is has a serial it may tell what tractor it started in. Guess you found C-281 on the block. Look forwar on the block from it to find a date code. Raised cast numbers and letter. Like 4-8-C. Thats the month and day casting was made with the letter representing a year. Depending on numbers and letter you have can tell when the block was made. [Reply]  [No Email]
mkirsch 08-15-2012 05:20:50 64.80.110.74 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-14-2012 21:32:23   Whatever the serial plate says it is, it is. Lacking a serial plate, you will find that a 450 almost always has C (1957) and D (1958) date codes in the castings. There will be holes in the top of the cowling over the hydraulic valves so that you can switch them from one-way to two-way easily. Odds are, if the hood emblems say "400" it's just a 400 with a replacement engine. Of course, anything could've happened in the last 55 years. [Reply]  [No Email]
Hugh McKinney 08-15-2012 10:01:42 99.195.66.81 Report to Moderator	Re: Farmall 400 or 450 in reply to mkirsch, 08-15-2012 05:20:50   I have a 450 that has the holes in the cowl, but what do you mean by one-way or two way? I have not used remote cylinders on it, just pulling an old-fashioned Servis stalk-cutter, so I don't know much about their hydraulics. Thanks. [Reply]  [No Email]
dblair 08-15-2012 16:03:30 68.57.49.167 Report to Moderator	Re: Farmall 400 or 450 in reply to Hugh McKinney, 08-15-2012 10:01:42   you can set a 450 hydraulics for one way or two way operation at the valve. [Reply]  [No Email]
DeltaRed 08-14-2012 22:46:51 67.6.225.104 Report to Moderator	Re: Farmall 400 or 450 in reply to DC_PA, 08-14-2012 21:32:23   Look at the sn plate....Steering wheel,white hood stripe.look at the cast codes.may or may not be the original engine.He!!,I got a friend with a late 450 that has a 248 in it. [Reply]  [No Email]