Don't find very many with 4 inch pistons still in there. 362174R1 was a gasoline head used on 400 and 450 tractors and will give you more compression than your original head. Originally IH used different fire crater piston sets for the SM gas head and the 400 450 gas head. You would have to find new old stock for those. Not positive but think all the 4-1/8 aftermarket sets will work with the heads. Thin wall sleeves work in your block. Only thing to watch for is the piston pin size. Two size pins were used. SM and part of the 400 have the large pin. If you get pistons with the small pin size, adapter pin bushings would need installed in the rods. Also if using the 362174R1 head its best to get a 400 or 450 valve cover and run a pvc pipe from valve cover opening to air cleaner pipe. SM head has a opening in the head rear for pipe to air cleaner. 400 and 450 came out top of valve cover. Also didn't use the pipe over rocker arms, Just a short stand pipe in the front vent hole. If you use that head and 4.125 step head or other pistons from the 4 inch flat top ones you won't think its the same tractor.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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