Gas or LP Head

TXZane · Apr 22, 2015

My 400 is more than likely a LP tractor that was converted back to gas. Has the LP manifold still. The part number on the head is 356980R2. Is this an LP or gas head?

D Slater · Apr 23, 2015

That's the engine block casting number. Two LP heads were used on 400 tractors. Early one looks like the first picture on top outside the valve cover. Smaller combustion chamber ones look like the second picture. IH LP manifold was used on part of the SM and all 400 and 450 LP tractors

TXZane · Apr 23, 2015

Wow...I think I need to slow down and take it easy for a few days. I knew the whole time that was the block, but still posted it on here thinking for some reason it was the head. I know I have too many projects going right now.

Dblair · Apr 23, 2015

lp head is 364586R1 , in the cornet under the valve cover .

D Slater · Apr 23, 2015

Think all of us does something to make us fell stupid once in a while.
If the tractor was originally a LP a suffix letter C or N should follow the engine serial number on the block. Sometimes under the serial number.

Gas or LP Head

TXZane

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D Slater

Well-known Member

TXZane

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Dblair

Well-known Member

D Slater

Well-known Member

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