Our newly acquired FARMALL 400 sn IS 39391 S. I believe that would indicate that is a 1956 with TA is that correct? The bore is 4.125 with the step head or fire crater pistons so someone has replaced the sleeves and pistons is that correct? I posted earlier about the burnt valve just trying to find out what we have. Thanks for all your help.
- Thread starter henryv11
- Start date
According to Tractordata.com, the 400 had 4" pistons. The 450 had 4.125" (4 1/8"). Ordinarily, they shipped with 'flat tops', but the "high altitude" option would have had the Firecrater / step head pistons. If it was stock with the HiAlt option, it would be 4" firecraters.
So yes, someone has been in there and given it the "Kirk Treatment" ("Scotty, I need more power").
So yes, someone has been in there and given it the "Kirk Treatment" ("Scotty, I need more power").
Janicholson
Well-known Member
The 39391 dates it to 10,000 or so into the 56 production year. The S is for Torque Amplifier and provision for independent Power Takeoff. The pistons have probably been replaced. Jim
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
It's pretty safe to assume that the engine has been overhauled, unless you got one of those super secret test mules for the C281 engine.
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