H trans gears and engine questions.

I have a few questions to ask. One is what are the transmission gears made out of in a 1946 Farmall H, Cast Steel or Cast Iron? They appear to be cast, but cast what? And second, in a 1946 Farmall H engine, Can I put stepped head pistons without doing any block or head modifications. And if I can put them in without any block or head modifications, where would be the best place to get a set of pistons and sleeves? New or used?
Thanks Nick

You can put stepped head pistons in and use any head. The dome on the IH "firecrater" pistons is only 21 ccs. The cylinder volume, not counting the head, is roughly 650 ccs. If you are just putting in stepped head pistons, you could be looking at something under a 3% increase in compression ratio.

If you are going to all that trouble, why not use new parts ? This site has reasonably priced piston and sleeve kits, that I hear are decent quality.

Greg

I need to know what the gears were made out of because I need to repair one. I found out they were made out of cast steel. Thanks for all the uesful infomation you gave me.

Nick