Jeremy, I'm a restorer & not a puller so haven't ever tried to install the 630 cam in an A.. ~I have heard of it being done but not sure what's involved in doing that or the gain that would be seen.. Personally if I was looking for a better cam I would have my stock cam re-ground by a reputable cam grinder as that would get me EXACTLY what I needed for my compression, carburetion, & engine usage.. ~You might take your question to the YT puller board,, or E-Mail Mike Alward [he's a puller that posts on this board].. ~Maybe someone that has researched that cam swap can chime it here & help you... ~If you are looking for some reading on cams just go to the YT tractor pulling board & put the word CAMSHAFT in the search box at the top, or put that same word in the search box on this board & switch the search area to tractor pulling board.. About 141 readings.... JDClooney@aol.com
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