Anonymous-0
Well-known Member
We had a Farmall 460 gas when I was growing up on a cotton soybean farm in Arkansas. I always wondered why this tractor didn't have more power. Setting in the seat and looking out over that long hood - the tractor seemed to promised more than it could deliver. Based on side by side work, it seemed that a good strong M Farmall had just as much power if not a little more.
I remember back around 1960 looking at the engine specifications for the gas powered 460, 560 and 660. It seems that all three of the tractors had the same bore (3 9/16 in.) The 460 had 221 cu. in. displacement with a 3 11/16 in. stroke while the 560 and 660 gas burners both had 263 cu. in. displacement utilizing a 4 25/64 in. stroke. The 660 got its extra H.P. from its 2,400 rpm rating (600 more rpm than the 560 and 460). I also understand that the 660 used a different carburetor and governor spring.
My question - wouldn't it be an easy thing to change out the governor spring in the shorter stroke 460 to increase its HP? Its piston speed at the faster 2,400 rpm would still be less the 660 because of its shorter stroke? I realize that the faster engine speed might mess up the most popularly used gearing for plowing etc.
I remember back around 1960 looking at the engine specifications for the gas powered 460, 560 and 660. It seems that all three of the tractors had the same bore (3 9/16 in.) The 460 had 221 cu. in. displacement with a 3 11/16 in. stroke while the 560 and 660 gas burners both had 263 cu. in. displacement utilizing a 4 25/64 in. stroke. The 660 got its extra H.P. from its 2,400 rpm rating (600 more rpm than the 560 and 460). I also understand that the 660 used a different carburetor and governor spring.
My question - wouldn't it be an easy thing to change out the governor spring in the shorter stroke 460 to increase its HP? Its piston speed at the faster 2,400 rpm would still be less the 660 because of its shorter stroke? I realize that the faster engine speed might mess up the most popularly used gearing for plowing etc.