small block chevy into a wd allis?

Cruzin Lowell · Mar 21, 2012

has anybody ever tried to put a chevy small into a wd?I also thought about putting a auto trans behind the engine then couple it to the wd input shaft.I thought that would give me 3 ranges for each gear of the wd trans.I realize I would have to lengthen the frame rails but would the gears stand up to that much power?

Jim Phelps · Mar 21, 2012

I have seen it done with an F-20 farmall, used a 6 cylinder chrysler with an auto tranny. Pulled logs with it.

Anonymous-0 · Mar 22, 2012

Small block, big block, 2 wd engines in a row, motorcycle engines, you name it, it's been done. WD is one tough puller. You can also interchange even stronger gear train parts, from a WC!

Anonymous-0 · Mar 23, 2012

My dad told me that a small block chevy would actually bolt up to the WC trans. He had a WC tore down and ready and he had an old 50's I think small block but never got it done unfortunately.

IOWA NORTHEAST · Mar 24, 2012

I know a guy that has all the adpters, 283 ---and he says he will not sell them to me because he is my friend.

Indiana Ken · Mar 24, 2012

The gear train strength is more about torque than power. Using an Allis WD-45 (approximately 25% more power than the plain WD) engine as an example: The WD-45 puts out it's maximum torque of 287.9 ft-lbs at 867 RPM, per the 1953 Nebraska tests. A small block chevy can easily turn 5000 RPMs; assuming it can put out the same torque of 287.9 ft-lbs at 5000 RPM the HP would be 274. The 274 HP would place a similar load on the tractor gear train as the WD-45 engine at the 47.5 HP torque peak.

Note - the above example assumes the Chevy engine is direct coupled to the Allis transmission. If you run an extra transmission and run it in a gear other than the 1:1 straight through high gear, you will need to account for the torque increase. For example, running in second gear with lets say a 2:1 ratio will increase the Chevy engine torque by a factor of two, placing increased loads on the tractor gear train.

Cruzin Lowell · Mar 30, 2012

Ken , thanx for the very useful info.the tractor has a continentel engine in it now ,it leaked oil,now that is fixed, it smoked v badly i used some sea foam in the gas and the crancase oil and that is allmost cleared up.It may have had a stuck ring or two.I have a couple of 4.3 v6's laying around but it may not be something i need to worry about anymore if the cont. engine keeps improving.Have a nice day.

small block chevy into a wd allis?

Cruzin Lowell

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