Super M ----400 differences?

jcarter · Jul 15, 2009

Is there any differences in the engine and clutch/transmission between these tractors?If so, what are they?Is the carb. the same?Is there a head upgrade on the 400?Haven't seen this asked before. thanks.

D Slater · Jul 15, 2009

Clutch splines are different, pressure plates on the 400 had a splined hub added to drive IPTO.
Only thing that will interchange between transmission and rear ends is the differential, differential carrier housings, bull pinion gears,retainers ,brakes, bull gears, axles and housings. But a SMTA rear is mostly the same as a 400 except for transmission top cover, shift forks and shifter.
Comparing gasoline engines the 400 used heads with a smaller combustion chamber, different camshaft, manifold, carb, different advance curve in the distributor, part of 400 production used pistons, and connecting rods with a smaller piston pin. part of the 400 used the last design IH camshaft gear. part of the 400 came with a dipstick and a oil pan with no petcocks. different valve cover, different front crankshaft pulley timming marks. Probably forgot a few things.

jcarter · Jul 16, 2009

Thanks, that is what I was looking for.

scot in pa · Jul 16, 2009

The SM also didn't have the bosses to mount the quick hitch.

Super M ----400 differences?

jcarter

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D Slater

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jcarter

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scot in pa

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